The present disclosure provides for barrier wall assemblies (e.g., isolation barrier wall assemblies having embossed aluminum sheets coated with dielectric coatings). More particularly, the present disclosure provides for barrier wall assemblies configured to be positioned between electric power distribution components (e.g., positioned between power distribution components of different voltages or different criticality so that a fault in one section or component functional group will not affect adjacent areas).
Aircraft electric machines are described. The aircraft electric machines include a laminated rotor operably connected to a shaft, the laminated rotor comprising a plurality of rotor teeth and air gaps defined between adjacent rotor teeth about a circumference of the laminated rotor, a modular stator assembly comprising at least one stator segment having a winding wrapped about a center body of the at least one stator segment, a cooling element arranged at least one of adjacent to or within the winding, and at least one power module system comprising an active rectifier and wherein the laminated rotor and modular stator are arranged as a switched reluctance rotor-stator assembly.
H02K 3/24 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
B64D 27/30 - Aircraft characterised by electric power plants
B64D 33/08 - Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of power plant cooling systems
H02K 9/193 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling mediumArrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with means for preventing leakage of the cooling medium
H02K 11/04 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
3.
SYSTEMS AND METHODS FOR REDUNDANT OVERVOLTAGE PROTECTION FUNCTIONS
A power generation system includes a rotating machine having a mechanical rotational output. An electrical generator is connected to the mechanical rotational output, and has an electrical output electrically connected to a power distribution system. A generator control unit is controllably coupled to at least the electrical generator. The generator control unit includes a memory and a processor. The generator control unit is configured to operate in conjunction with an overvoltage protection unit including a redundant overvoltage operational test system. The redundant overvoltage operational test system includes an operational amplifier configured to operate as a voltage follower during a first mode of operations, and as a point of regulation gain amplifier during a redundant overvoltage operational test.
H02P 9/10 - Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
H02P 9/00 - Arrangements for controlling electric generators for the purpose of obtaining a desired output
A fuel system a main manifold with an inlet and a plurality of main manifold branches. Each valve in a plurality of valves is connected in fluid communication with a respective one of the main manifold branches in the plurality of main manifold branches to receive flow from the main manifold. Each secondary manifold in a plurality of secondary manifolds connects a single one of the valves in the plurality of valves to a pair of secondary manifold branches. Each nozzle in a plurality of fuel nozzles includes a first inlet connected in fluid communication to one of the valves through one of the secondary manifold branches, and a second inlet connected in fluid communication to a different one of the valves through a different one of the secondary manifold branches so each of the fuel nozzles has a redundant connection to the main manifold through two of the valves.
A method for increasing stator cooling airflow in an air cooled electric motor is provided, wherein the air cooled electric motor includes a compressor outlet housing having a motor cavity separator wall and a separator plate defining a separator plate opening, wherein the compressor outlet housing defines a separator plate cavity and a compressor rotor back-face cavity configured to receive a back-face cavity airflow. The motor cavity separator wall separates the separator plate cavity from the compressor rotor back-face cavity and defines a motor cavity separator wall through-hole which communicates the separator plate cavity with the compressor rotor back-face cavity and a motor cooling housing including a motor cooling outlet structure which defines a stator outlet cavity, wherein the separator plate is disposed to separate the stator outlet cavity from the separator plate cavity.
A pressure sensing system includes a housing that houses one or more pressure transducers therein. A tube is sealed to the housing at a first end of the tube. One or more pressure transducers are in fluid communication with a second end of the tube through an inner passage of the tube for sensing pressure at the second end of the tube.
G01L 19/00 - Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
F01D 17/08 - Arrangement of sensing elements responsive to condition of working fluid, e.g. pressure
A method includes detecting a modulating undervoltage state having transients above an undervoltage threshold and triggering a protection upon detecting the modulating undervoltage state. The method can include detecting a steady state undervoltage condition, wherein triggering a protection includes triggering the protection upon detecting the steady state undervoltage condition or the modulating undervoltage state. A system includes a power source including a feedback sensor at a point of regulation (POR) of the power source configured to generate feedback indicative of voltage at the POR. A controller is operatively connected to receive the feedback. The controller includes controller logic that is configured perform a method as described above.
In accordance with at least one aspect of this disclosure, a pump comprises a pump rotor having a plurality of vanes therein configured to pump a fluid from a pump inlet to a pump outlet through rotation of the rotor about a rotational axis, an input shaft operatively connected to drive rotation of the rotor, and a bearing operatively connected to the input shaft configured to facilitate rotation of the input shaft. A shaft extender is operatively connected radially between the input shaft and the bearing. The input shaft includes a conical portion and the shaft extender includes a conical portion complementary to the conical portion of the input shaft. The shaft extender interfaces with at least the conical portion of the input shaft, when on the input shaft.
F04C 15/00 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups
F04C 2/344 - Rotary-piston machines or pumps having the characteristics covered by two or more of groups , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group or and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
A cooling structure for a rotary electric machine. The structure includes an annular radiator body defining an axis X between a first end and a second end. The annular body has a radially inner wall and a radially outer wall and a plurality of channels defined between the radially inner wall and the radially outer wall. Each channel extends from the first end to the second end and each channel has an inner channel wall. A plurality of vanes extending inwardly into the channel from the channel wall.
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
H02K 9/10 - Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing
10.
SELF-ACTUATED BLEED VALVES FOR GAS TURBINE ENGINES
A bleed valve includes a housing. The housing includes an inlet and an outlet with a cylindrical flow path defined between the inlet and the outlet. A diametral plane is defined diametrically spanning the cylindrical flow path. A butterfly disc inside the housing is rotatably mounted to the housing along a rotation axis for rotation between an open position and a closed position. A link rotatably is connected to a pivot point on the butterfly disc for relative rotation of the link and the butterfly disc along a pivot axis parallel to the rotation axis. The pivot axis is on an opposite side of the diametral plane from the rotation axis.
F02C 9/18 - Control of working fluid flow by bleeding, by-passing or acting on variable working fluid interconnections between turbines or compressors or their stages
A data-enabled aircraft generator module includes a generator and a generator memory unit. The generator is configured to power an aircraft based at least in part on at least one control signal output from a generator control unit (GCU). The generator memory unit configured to exchange data with the GCU.
A pump assembly includes a cylinder block defining a piston bore therein extending in an axial direction. A sleeve lines the piston bore. A piston is included in the piston bore, configured to reciprocate along a stroke in the axial direction within the sleeve. A piston ring is engaged circumferentially about the piston. The piston ring is fixed to the piston and is slidingly engaged to an inner surface of the sleeve.
An environmental control system of an aircraft has a plurality of inlets including a first inlet for receiving a first medium and a second inlet for receiving a second medium. A thermodynamic device includes a compressor and at least one turbine and is fluidly coupled to the second inlet. A ram air circuit has a plurality of heat exchangers including a first heat exchanger and a second heat exchanger and is fluidly coupled to both the first inlet and the thermodynamic device. In a first mode, an outlet of the thermodynamic device is fluidly connected to the ram air circuit downstream from both the first heat exchanger and the second heat exchanger. In a second mode, the outlet of the thermodynamic device is fluidly connected to an inlet of one of the plurality of heat exchangers.
B64D 13/08 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned the air being heated or cooled
A pin for a core layer of a heat exchanger past which fluid flowing through the layer passes, the pin having a leading edge, a trailing edge, a first and a second end and, an outer surface between leading edge and trailing edge and the first and second ends, and wherein the pin comprises a pin core extending from the first end to the second end and defining the leading edge and the trailing edge, and a plurality of vanes extending from the pin core each vane extending between the leading edge and the trailing edge, and the vanes arranged one above another in the direction from the first end to the second end.
F28F 3/04 - Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
15.
Single variable displacement fuel systems with fuel oil cooler bypass and gas generator fault accommodation
A system includes an actuation pump sub-system (APS). A fuel oil cooler (FOC) is included in a first branch of a supply line. The FOC is in fluid communication to receive flow from a second outlet of the APS. The APS includes a bypass valve (BPV) in a second branch of the supply line, in parallel with the FOC and in fluid communication to allow flow from the third outlet into the supply line bypassing the FOC. A combined main and augmentor pump sub-system (CMAPS) has a main inlet connected in fluid communication with the supply line downstream of the BPV and FOC, a gas generator (GG) outlet for supplying fuel to a downstream gas generator, and an augmentor outlet for supplying fuel to a downstream augmentor.
A fluid circuit of a heat exchanger includes a core and a first header. The core is configured to receive a fluid and includes a plurality of conduits. Each of the plurality of conduits extends along a longitudinal axis from a first end portion to a second end portion. The first header is integrally formed with and fluidly connecting the plurality of conduits. Outer walls of the plurality of conduits taper outward relative to the longitudinal axes to join the first header.
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
A generator system can include a generator control unit (GCU) configured to control a generator output of a generator. The GCU can be configured to monitor the generator output for overvoltage and attenuate an overvoltage by directing at least a portion of the generator output to a heater element. The GCU can be configured to cause voltage division of the generator output between the GCU and the heater element if an overvoltage is detected to protect one or more GCU electrical components.
An air conditioning system includes an environmental control system configured to condition a flow of medium. The environmental control system includes a thermodynamic device having a compressor and at least one turbine operably coupled by a shaft and at least one heat exchanger. A secondary system has a working fluid circulating therethrough. At least one liquid loop having at least one liquid flowing therethrough is fluidly connected to the at least one heat exchanger. The environmental control system is thermally coupled to the secondary system, via the at least one liquid loop. The at least one liquid provided at an outlet of the at least one heat exchanger is operable to cool the working fluid of the secondary system.
A system includes a burn flow line and a flow divider valve in fluid communication with the burn flow line to split flow from the burn flow line to a primary line and to a secondary line for supplying fuel to a set of primary engine nozzles and to a set of secondary engine nozzles, respectively. A sensor operatively connected to the flow divider valve to produce a feedback signal indicative of flow split between the primary line and the secondary line. A controller is operatively connected to receive the feedback signal from the senor, compare the feedback signal to a stored flow split value for a mismatch, and output an alert message upon detecting the mismatch.
An electrical machine assembly includes an armature assembly defining a rotational axis and a rectifier assembly including at least one diode and defining a central rectifier axis. The armature assembly is configured and adapted to be coupled with a rotor shaft for relative rotation therewith. The central rectifier axis is at a non-parallel angle relative to the rotational axis. A rectifier assembly includes a first diode and a second diode stacked with the first diode. The rectifier assembly includes an AC terminal positioned between the first diode and the second diode and a DC positive output pin electrically coupled to the first diode. A portion of the AC terminal extends outward from the rectifier assembly at a non-parallel angle relative to the central longitudinal axis of the rectifier assembly. A central longitudinal axis of the rectifier assembly can be parallel to the DC positive output pin.
A human waste collection system having a basin defining a basin cavity and a lower end that is configured for being positioned against a floor and an upper end that is displaced further from the plane than the lower end; a storage bag system disposed in the basin cavity; a seat disposed at the upper end of the basin, the seat having a lid; a suction system having a first suction conduit extending into the basin cavity, adjacent to the upper end of the basin; a controller having a user interface that has user engageable features to select between operation modes including a first mode for removing menses and solid waste and a second mode for removing urine, wherein: in the first mode, menses and solid waste is collected in the storage bag; and in the second mode, the suction system suctions urine.
Embodiments of the disclosure provide a deep-mission system that includes a processor system operable to perform processor system operations that include executing a first instance of a cognitive algorithm; generating data of the deep-mission system that can be used to fine-tune the first instance of the cognitive algorithm; and transmitting the data of the deep-mission system over a deep-mission communication path to a remote station. The remote station is operable to, based at least in part on the data of the deep-mission system, perform fine-tuning operations on a second instance of the cognitive algorithm located at the remote station; generate updates to the cognitive algorithm based on the fine-tuning operations; and transmit the updates to the cognitive algorithm over the deep-mission communication path to the deep-mission system. The processor system operations further include using the updates to the cognitive algorithm to update the first instance of the cognitive algorithm.
A controller for an electrical drive system includes one or more electrical drives, one or more electrical loads, and a switching component configured to connect the one or more electrical drives to the one or more electrical loads in a switching configuration. The controller includes a processing module configured to receive switching data indicative of the switching configuration and analyze the switching data to determine control data for at least one of the electrical drives. The controller further includes an output module configured to output the control data to the at least one electrical drive. The at least one electrical drive is configured to use the control data to supply the electrical load/s, via the switching component, with electrical power.
B60L 15/22 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed with sequential operation of interdependent switches, e.g. relays, contactors, programme drum
Embodiments of the disclosure provide a system for monitoring a mission. The system includes a digital ecosystem (DE) associated with the mission and positioned at a remote station. The DE, responsive to sensed data associated with deployed products positioned locally with the mission, generates performance data associated with the deployed products. A processor is provided and includes local processor resources located at the mission, along with remote processor resources at the remote station. The processor operations are performed and include executing a first cognitive algorithm to, responsive to a portion of the performance data, generate an initial cognitive output associated with an initial cognitive output action; prior to initiating the initial cognitive output action associated with the initial cognitive output, displaying to a user the initial cognitive output; and responsive to receiving user feedback on the initial cognitive output, executing post-user-feedback operations based on the user feedback.
A system includes a main pump having a main pump shaft configured to connect to a gear box for driving the main pump with rotational power from the gear box in a run mode, and for driving the gear box with rotational power from the main pump in a start mode. The system includes a first fuel line with an inlet configured to connect to connected in fluid communication with a fuel source. The first fuel line includes a first branch in fluid communication with the main pump, and a second branch. A start pump is connected in fluid communication with the second branch of the first fuel line. A second fuel line connects the start pump in fluid communication with a pump management valve (PMV). A third fuel line connects the main pump in fluid communication with the pump management valve.
A rotor assembly is provided and includes a rotor impeller and rotor shaft. The rotor impeller includes a blade section and a forward section. The rotor shaft includes an aft section at which the rotor shaft terminates. The aft section is directly attached to the forward section of the rotor impeller. The blade section includes a converging blade configured to converge to a point with a minimized internal diameter (ID).
An environmental control system includes a first water collector having a first drain line and a second water collector having a second drain line. The first drain line is fluidly connected to the second drain line. The environmental control system includes also includes at least one spray nozzle. An outlet of the second drain line is fluidly connected to the at least one spray nozzle.
A rotor assembly is provided and includes a two-piece rotor impeller and a rotor shaft. The two-piece rotor impeller includes a blade section and a forward section, which is connected to the blade section. The rotor shaft includes an aft section at which the rotor shaft terminates. The aft section is directly attached to the forward section of the rotor impeller. The blade section includes a converging blade configured to converge to a point with a minimized internal diameter (ID).
F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps
F04D 17/02 - Radial-flow pumps specially adapted for elastic fluids, e.g. centrifugal pumpsHelico-centrifugal pumps specially adapted for elastic fluids having non-centrifugal stages, e.g. centripetal
A system can include a first controllable valve configured to output a first control pressure on one or more first pressure control lines, a second controllable valve configured to output a second control pressure on one or more second pressure control lines, and a valve assembly. The valve assembly can be configured to direct the first control pressure to a first functional system and the second control pressure to a second functional system in a first state, direct the first control pressure to both of the first functional system and the second functional system in a second state, and direct the second control pressure to both of the first functional system and the second functional system in a third state.
F15B 13/044 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
A circuit for detecting discrete inputs includes a first line replaceable unit (LRU). A second LRU includes an LRU circuit that includes a power source, a diode set coupled to the power source, a resistor R3 connecting from a node Vc between the diode set and the first LRU to ground, and a logic detection and processing circuit. The logic detection and processing circuit is operably connected to the diode set, and is configured to detect a state of the first LRU based on a detected voltage. The detected voltage is either open, or 28-Volts.
G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
H02H 1/00 - Details of emergency protective circuit arrangements
H02H 7/20 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
A controller, a circuit, an aircraft electrical system and a method for controlling an isolated (inductor-inductor-capacitor) LLC power converter circuit. The circuit comprising an isolated transformer, and a first switch operable as a synchronous rectifier on a secondary side of the transformer. The controller comprises a current determination module configured to determine a primary winding current on a primary side of the isolated transformer; and a processing module configured to use the determined primary winding current in a processing algorithm to output a first control signal to configure the first switch on the secondary side of the isolated transformer to determine a waveform of a secondary winding current of the isolated transformer.
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
A start-up architecture for a fuel cell includes a fuel cell having a hydrogen input and an oxygen source input and a hydrogen output for outputting residual hydrogen not used in the fuel cell reaction. The hydrogen output is connected to the hydrogen input via a mixer in a hydrogen loop. The architecture also includes a bypass loop, bypassing the mixer, between the hydrogen output and the hydrogen input and a control valve (CV1) in the bypass loop between the hydrogen output and the hydrogen input. A hydrogen start-up stored energy source is connected to the hydrogen input via a hydrogen start-up line and an oxygen source start-up stored energy source is connected to the oxygen source input via an oxygen source start-up line. During a fuel cell start up process, the architecture is configured to provide hydrogen and oxygen to the startup lines.
H01M 8/04302 - Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
H01M 8/04014 - Heat exchange using gaseous fluidsHeat exchange by combustion of reactants
H01M 8/04082 - Arrangements for control of reactant parameters, e.g. pressure or concentration
H01M 8/04111 - Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants using a compressor turbine assembly
A system can include a first controllable valve, a second controllable valve, a transfer valve, and a transfer control system. The first controllable valve can be configured to output a control pressure on one or more first pressure control lines. The second controllable valve can be configured to output a control pressure on one or more second pressure control lines. The transfer valve can be in fluid communication with the first controllable valve and the second controllable valve. The transfer valve can be configured to move between a first position, a second position, and a third position.
G05D 16/20 - Control of fluid pressure characterised by the use of electric means
F15B 13/044 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
A hybrid bearing assembly is provided and includes stationary components, a shaft disposed to rotate relative to the stationary components, passive magnetic bearing components integrated into the shaft and the stationary components to generate passive magnetic force to resist radial movement of the shaft relative to the stationary components and an active damping system. The active damping system includes a stationary coil, a magnetic element rotatable with the shaft to induce current in the stationary coil and a circuit electrically coupled with the stationary coil. The circuit is configured to determine from the current an attitude change of the shaft and the magnetic element and to apply damping current to the stationary coil to resist the attitude change.
Waste management systems and capture funnels thereof are described. The waste management systems include a waste container, a reclamation system, a capture funnel, and a hose fluidly connecting the capture funnel to each of the waste container and the reclamation system. The capture funnels include a funnel having an inlet end and an outlet end, wherein the inlet end has a non-circular shape, a skirt arranged at the inlet end, and a capture insert installed within the funnel.
A harmonic drive, having: a ground ring; a first flex spline extending axially from the ground ring; a first input shaft that is radially exterior to the first flex spline, the first input shaft includes a first wave generator that engages the first flex spline; a second flex spline, radially within the first flex spline and rotationally coupled to the first flex spline, a second input shaft that is radially within the second flex spline, the second input shaft includes a second wave generator that engages the second flex spline; an output shaft coupled to the second flex spline, the first flex spline includes a first spline that faces radially inward; the second flex spline includes a second spline that faces radially outward; a circular gear having a third spline that face outwardly and engages the first spline; a fourth spline that faces radially inward and engages the second spline.
A method of additively manufacturing an aircraft part, having steps of: forming a base, defining a shape of the aircraft part, out of first thermoplastic polymer; forming a lower support surface onto discrete locations of the base by printing a mixture of a second thermoplastic polymer and a catalyst compound formed with metal onto the discrete locations, such that the lower support surface is formed with cavities; and forming an upper support surface by depositing, via electrolysis deposition, a metal plating onto the lower support surface along the discrete locations, to thereby form the aircraft part.
B64F 5/10 - Manufacturing or assembling aircraft, e.g. jigs therefor
B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
C25D 9/04 - Electrolytic coating other than with metals with inorganic materials
38.
METAL PLATED ADDITIVELY MANUFACTURED PLASTIC ACM ROTORS WITH INTERNAL THERMALLY ADAPTIVE STRUCTURE
A method of forming a rotor for an ACM, having steps of forming a base having: a first section adjacent to an ACM diffuser shroud when installed; a second section forming a seal disposed against an ACM aft frame member when installed; a third section connected to an ACM compressor rotor shaft when installed; a fourth section connected to an ACM tie rod when installed; a fifth section between the second and fourth sections, forming the base includes: printing thermoplastic polymer surfaces from thermoplastic polymers disposed against each other, the thermoplastic polymer surfaces having different CTEs; forming a lower support section on the base by printing along the discrete sections a mixture of a third thermoplastic polymer and a catalyst formed with metal; and forming an upper support section on the rotor by depositing on the lower support section along the discrete sections, via electrolysis deposition, a metallic coating.
B29C 64/112 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
A method of forming a housing for an ACM, having steps of: forming a base: a first section adjacent to a seal of an ACM compressor rotor when installed; a second section that is fixed to an ACM forward frame member when installed; a third section adjacent to a bearing and sleeve disposed around an ACM compressor rotor shaft when installed, forming the base includes: printing thermoplastic polymer surfaces from thermoplastic polymers that are disposed against each other, the thermoplastic polymer surface having differing CTEs; forming a lower support section on the base by printing, layer by layer, along the plurality of discrete sections of the base a mixture of a third thermoplastic polymer and a catalyst formed with metal; and forming an upper support section on the housing by depositing on the lower support section, along each of the discrete sections, via electrolysis deposition, a metallic coating.
B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
B33Y 70/10 - Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
40.
METAL PLATED ADDITIVELY MANUFACTURED PLASTIC ACM SHAFTS WITH INTERNAL THERMALLY ADAPTIVE STRUCTURE
Forming an ACM shaft by: forming a base of (i) a thrust shaft having a first section connecting with an ACM tie rod when installed; a second section connecting with an ACM motor rotor when installed; a third section forming a shaft joint that connects adjacent portions of the thrust shaft; or (ii) a compressor rotor shaft having a fourth section connecting with an ACM tie rod support when installed; and fifth section connecting with the ACM motor rotor when installed; forming the base includes: printing polymer surfaces having differing CTSs from polymers disposed against each other; forming a lower support section on the base by printing along the discrete sections a mixture of a third thermoplastic polymer and a catalyst formed with metal; and forming an upper support section on the shaft by depositing on the lower support section, along the discrete sections, via electrolysis deposition, a metallic coating.
B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
B33Y 70/10 - Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
B33Y 80/00 - Products made by additive manufacturing
41.
METAL PLATED ADDITIVELY MANUFACTURED PLASTIC ACM SHROUDS WITH INTERNAL THERMALLY ADAPTIVE STRUCTURE
Forming a shroud for an ACM by: forming a base having discrete sections including: a first section defining connecting features for connecting with a fixed ACM structure; a second section positioned adjacent to a compressor rotor when installed in the ACM; and a third section disposed adjacent to a drive ring bearing when installed in the ACM; forming the base includes: printing thermoplastic polymer surfaces, respectively from thermoplastic polymers, disposed against each other, a first thermoplastic polymer surface having a CTE, and a second thermoplastic polymer surface having a second CTE; forming a lower support section on the base by printing along the discrete sections of the base a mixture of a third thermoplastic polymer and a catalyst formed with metal; and forming an upper support section on the shroud by depositing on the lower support section, along each of the discrete sections, via electrolysis deposition, a metallic coating.
A method of forming a seal plate for an ACM, having steps of: forming a base having a first section exposed to flow from an ACM first stage turbine inlet when installed; a second section secured to an ACM compressor shroud; a third section secured to a first stage nozzle and ACM shroud when installed; a fourth section that is adjacent to a rotor blade of the ACM compressor rotor when installed, forming the base includes: printing thermoplastic polymer surfaces from thermoplastic polymers, that are disposed against each other, the thermoplastic polymer surfaces having differing CTEs; forming a lower support section on the base by printing along the discrete sections a mixture of a third thermoplastic polymer and a catalyst formed with metal; and forming an upper support section on the seal plate by depositing on the lower support section, along the discrete sections, via electrolysis deposition, a metallic coating.
In accordance with at least one aspect of this disclosure, a system includes a fuel line, an electrically driven fuel pump configured to supply fuel to a first fuel line branch and a second fuel line branch, and a selector valve disposed in the fuel line at a juncture of a first fuel line branch and a second fuel line branch configured to communicate the electrically driven fuel pump with the first fuel line branch or the second fuel line branch based on a position of the selector valve. In a first position, the selector valve is configured to fluidly connect the electrically driven fuel pump with the first fuel line branch to supply fuel to a combustor of the engine and drive a high pressure shaft at a first speed. In a second position, the selector valve is configured to fluidly connect the electrically driven fuel pump with the second fuel line branch to drive a hydraulic rotation unit configured to drive the high pressure spool of the engine at a second speed different from the first speed.
A fuel system includes a main fuel pump sub-system (MFP) with an inlet for receiving a supply of fuel from an inlet line. The MFP has a main outlet line configured to supply fuel to a main fuel throttle valve assembly (MFTV), and a cross-over outlet line. An augmentor fuel pump sub-system (ABFP) has an inlet connected in fluid communication with the cross-over outlet line, and an outlet connected in fluid communication with a main augmentor supply line. A actuation fuel pump sub-system (AFP) has an inlet connected in fluid communication with a branch of the main outlet line, an outlet line with a first outlet line branch configured to connect to supply fuel to the MFTV, and a second outlet line branch configured to connect to supply fuel to an actuation system.
A system includes a main supply line and a thermal recirculation pump in fluid communication with the main supply line for supplying the thermal recirculation pump. The thermal recirculation pump is connected in fluid communication with a thermal recirculation line for providing fluid at an elevated pressure to the thermal recirculation line relative to the main supply line. A thermal recirculation control is connected in fluid communication to be supplied from the thermal recirculation line. A cooler system of one or more coolers is connected in fluid communication with a cooler supply line of the thermal recirculation control.
In accordance with at least one aspect of this disclosure, a pump system for an aircraft includes, a cylinder barrel configured to rotate within a pump housing of a pump, and a plurality of pistons seated within a respective bore defined in the cylinder barrel. Each piston further includes a piston ring disposed at an end thereof configured to form a hydrodynamic seal with an inner surface of the respective bore. Each respective piston ring is of silicon nitride. In embodiments, the piston ring can include a chamfer on at least a leading edge of the piston ring. In embodiments, the piston ring can include a cut therethrough configured to allow for thermal expansion of the piston ring.
F16J 9/28 - Piston-rings, seats thereforRing sealings of similar construction in general characterised by the use of particular materials of non-metals
B64D 37/00 - Arrangements in connection with fuel supply for power plant
A system includes a variable displacement pump (VDP) in fluid communication with an inlet line and with an outlet line. The VDP includes a variable displacement mechanism configured to vary pressure to the outlet line. The system includes a relief valve (RV) having a control pressure port and an RV inlet port in fluid communication with the outlet line and an RV outlet in fluid communication with a bypass line. The system includes an actuator operatively connected to the control pressure port of the RV to change function of the RV between a first function and a second function. The first function is a high pressure relief valve function and the second function is as a wind milling bypass function.
A system includes a rotor shaft rotatable about an axis, a disconnect shaft nested at least partially within an interior of the rotor shaft, and a journal shaft selectively rotatably coupled to the disconnect shaft. A vibration damping mechanism is arranged between the rotor shaft and the journal shaft. The vibration damping mechanism includes a thrust journal bearing affixed to the rotor shaft and a thrust washer mounted to the journal shaft. A biasing mechanism is operably coupled to disconnect shaft to bias the thrust washer into frictional engagement with the thrust journal bearing.
A method of operating an environmental control system pack of a vehicle includes providing a thermodynamic device including a compressor and a plurality of turbines including a first turbine and a second turbine mounted to a shaft and a plurality of valves fluidly coupled to the thermodynamic device, operating at least one of the plurality of valves to supply a medium to the first turbine and the second turbine in series during a mode of operation, and operating at least one of the plurality of valves to supply a first portion of the medium to the first turbine and to supply a second portion of the medium to the second turbine independently from the first portion of the medium in location another mode of operation.
B64D 13/08 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned the air being heated or cooled
F25B 9/00 - Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
F25B 9/06 - Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using expanders
F25B 41/20 - Disposition of valves, e.g. of on-off valves or flow control valves
A nut for use in an actuator assembly having a rotatable screw includes an outer nut portion and an inner nut portion removably coupled to the outer nut portion. The inner nut portion is rotatably couplable to the rotatable screw. At least one anti-rotation pin is positionable between the outer nut portion and the inner nut portion to restrict rotation of the inner nut portion relative to the outer nut portion.
F16B 39/16 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down by means of locknuts in which the screw-thread of the locknut differs from that of the nut
51.
DC-TO-DC CONVERTER AND CONFIGURABLE OUTPUT MAGNITUDE AND POLARITY
A DC-to-DC converter includes an input configured to receive a DC input voltage, an output having a positive rail and a negative rail, wherein the negative rail is configured for connection to a negative terminal of the DC input voltage source, a bypass capacitor having first end connected to a first node and a second end connected to a second node and two coupled inductors, the two coupled inductors including a first inductor that has a first end connected to the input and a second end connected to the first end of the bypass capacitor at the first node, the two coupled inductors also including a second inductor that has a first end connected to the second end of the bypass capacitor at the second node and a second end connected to a third node. The converter includes switches that allow control of the polarity and magnitude of the output.
H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
H02M 3/00 - Conversion of DC power input into DC power output
A method of power switching includes receiving a command from an external aircraft controller to power an aircraft load from an aircraft voltage bus. The method includes in response to the command from the external aircraft controller, controlling a relay to connect or disconnect an aircraft voltage bus from an aircraft load. Controlling the relay includes current monitoring the relay and voltage monitoring the relay power switching. The method can include receiving temperature feedback indicative of temperature of the relay, and using the temperature feedback for at least one of controlling the relay and/or prognostic and health monitoring. The method can include outputting feedback to the external aircraft controller relating to status, operation, and health of the relay.
A system includes a solid state power controller (SSPC) including a plurality of switching devices connected in parallel. A gate driver is operatively connected to control the plurality switching devices together so all of the switching devices in the plurality of switching devices either close to pass current through the SSPC, or open to prevent current passing through the SSPC in a normal operation mode. A fail open test circuit is operatively connected to individually control a respective gate of each of the switching devices in the plurality of switching devices for testing the plurality of switching devices individually for a fail OPEN condition.
In accordance with at least one aspect of this disclosure, a rectifier assembly includes, at least, a first diode disposed between a first bus bar and a second bus bar. The rectifier assembly further includes, a first thermal management structure and a second thermal management structure. The first thermal management structure is configured to electrically connect the first bus bar to the first diode and be in thermal communication between the first bus bar and a first side of the first diode to transfer heat between the first bus bar and the first diode. The first thermal management structure is configured to transfer heat between the first bus bar and the first thermal management structure. The first thermal management structure is also configured to allow a fluid to flow therethrough to transfer heat from the first thermal management structure to the fluid flowing therethrough.
In accordance with at least one aspect of this disclosure, a system includes an airflow line, a main compressor disposed in the airflow line configured to receive a ram air flow and supply a compressed air flow to the air flow line, and a motor operatively connected to drive the main compressor. An air cycle machine is disposed in the airflow line downstream of the main compressor configured to receive the compressed airflow and supply a cooled cabin airflow to an aircraft cabin. A cooling line tap disposed in the airflow line downstream of the air cycle machine configured to communicate a flow of cooling air to the motor from the airflow line to supply a portion of the cooled cabin airflow to one or more portions of the motor as motor cooling air via a first cooling airflow line.
H02K 9/10 - Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing
B64D 13/08 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned the air being heated or cooled
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
56.
ELECTROWETTING AND THERMOELECTRICS ASSISTED TWO PHASE COOLING OF POWER ELECTRONICS USING INTEGRATED COOLING
Disclosed herein is a two-phase cooling electrowetting thermosyphon assembly and method of use thereof. The two-phase cooling electrowetting thermosyphon assembly provides cooling in the absence of gravity and/or in variable orientations of gravitational forces. The assembly combines a thermosyphon with an electrowetting electrode and a condenser. In certain embodiments, a Peltier cooler is incorporated into the assembly.
An n-level flying capacitor multi-level buck converter, for converting a DC input voltage into a DC output voltage provided at a load. The n-level flying capacitor multi-level buck converter is configured to: operate a first and second pairs of switching elements in a sequence to selectively apply a portion of the input voltage across the output filter; and operate the first and second pairs of switching elements such that each switching element turns on when a voltage across the switching element is zero.
H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
H02M 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode
A heat exchanger core layer having a first end, a second end opposite the first end, a first side extending between the first end and the second end and a second side, extending between the first end and the second end opposite the first side, and a divider extending from the first end and extending towards the second end between the first side and the second side, wherein a first flow region is formed between the first side and the divider, a second flow region is defined between the divider and the second side and a turnaround region is defined adjacent the second end between the first flow region and the second flow region; the layer having a plurality of first flow channels in the first flow region for directing a fluid flow, in use, in a first direction from the first end to the turnaround region.
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
A fuel cell system includes a fuel cell unit having an air inlet, a fuel inlet and an electrical energy outlet and a fuel cell exhaust outlet and a turbo-compressor unit to convert air from an air supply to compressed inlet air for the fuel cell unit. The turbo-compressor unit comprising a turbine and a compressor connected to a common rotatable shaft. The system also includes means for obtaining conditioned air exhausted from an enclosed space and directing the conditioned exhaust air to the turbine of turbo-compressor unit such that the conditioned exhaust air is expanded by the turbine causing rotation of the shaft and corresponding rotation of the compressor, means for providing air from the air supply to the compressor to be compressed and output from the compressor unit and provided as compressed inlet air to the air inlet of the fuel cell unit.
H01M 8/04111 - Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants using a compressor turbine assembly
B60L 50/72 - Constructional details of fuel cells specially adapted for electric vehicles
B64D 27/24 - Aircraft characterised by the type or position of power plants using steam or spring force
H01M 8/04082 - Arrangements for control of reactant parameters, e.g. pressure or concentration
H01M 8/04119 - Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyteHumidifying or dehumidifying
An electronic rotor “lock” that can be implemented within an electric motor system by selecting closing a subset of switches within an inverter of the motor drive system to create a circulatory current path that can generate a force that acts to oppose any external movement of the rotor.
A pin for a core layer of a heat exchanger. The pin extends from a first pin end to a second pin end and has an outer surface between the first and second pin ends. The pin includes a plurality of indentations in the outer surface and a plurality of protrusions on the outer surface.
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28F 3/08 - Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
62.
SYSTEM AND METHOD FOR TESTING AN INTEGRITY OF A FACE SEAL IN AN ELECTRICAL SYSTEM
Testing a gasket within a groove formed around a top of an enclosure and covered by a lid, including steps of: positioning a needle of a probe within a notch formed in an outer wall that surrounds the groove; and: injecting input current through the probe; comparing input voltage from the probe in the notch and an output voltage induced in conductive fasteners that secure the lid to the enclosure, to determine that a difference in the voltages is within a predetermined range, where voltage at the fasteners is measured with another probe; or injecting the input current into the fasteners; and comparing the input voltage at the fasteners with the output voltage induced in the gasket and measured via the probe in the notch, to determine that the difference in the voltages is within the predetermined range, where voltage at the fasteners is measured with the another probe.
A Direct Current (DC)-DC converter includes an input capacitor connected across a positive input terminal and a return input terminal. A DC-DC converter circuit is connected across the positive input terminal and the return input terminal. A current limiting failsafe circuit includes a current limiting portion connected across the positive input terminal and the return input terminal and a failsafe portion connected to a sensed voltage output. The failsafe portion is configured to control a current limit function of the current limiting portion and configured to force the DC-DC converter circuit into an off state in response to retripping of the current limiting portion.
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
64.
NONUNIFORM WALL THICKNESS PROFILE FOR TEARDROP PRESSURE VESSELS
A pressure vessel includes a body defined by a cross-sectional shape along a plane transverse to a centerline. The cross-sectional shape includes an inner surface defining an interior void and a wall extending from the inner surface to an outer surface defining an exterior of the body. The inner surface includes an arcuate region and a gabled region. The gabled region forms a curved interior peak opposite a center of the arcuate region. The arcuate region and the gabled region together define a teardrop shape. The wall includes a curved segment along the arcuate region having a curved segment minimum thickness at a location opposite the interior peak, an apex aligned with the interior peak and having an apex thickness, and thickened regions adjacent intersections between gabled region and the arcuate region and having greater radial thickness than the curved segment minimum thickness.
A system for vane pitch actuation includes an electric motor with a rotary output shaft defining a drive axis. A worm shaft defines a drive axis, and is operatively connected to be driven in rotation about the drive axis by the rotary output shaft of the electric motor. A sync ring is defined about an engine axis that is orthogonal to the drive axis. The sync ring is configured to rotate about the engine axis over a range of positions for driving a plurality of variable pitch stator vanes to each have a pitch based on position of the sync ring. The sync ring includes a plurality of gear teeth for actuation of the sync ring by the electric motor.
A solenoid drive circuit includes a power source, a first solenoid control circuit connected to the power source, the first solenoid control circuit including a first solenoid coil and a first solenoid control switch that controls a flow current through the first solenoid coil and a first regenerative drive circuit connected to the first solenoid control circuit and that includes a first regenerative capacitor. The first regenerative drive circuit can include a first diode bridge formed of four diodes (D1, D2, D3 and D4) and that has a positive input, a negative input, a positive output and a negative output, wherein the first regenerative capacitor is connected between the positive and negative inputs.
In accordance with at least one aspect of this disclosure, a method includes installing a welding tool into a repair tool holder, ultrasonic welding a repair sheet to a part to be repaired with the welding tool, removing the welding tool from the repair tool holder, installing a machining tool into the repair tool holder, and ultrasonic machining a portion of the repair sheet that is welded to the part to be repaired to match an a predetermined geometry of the part to be repaired with the machining tool.
B23K 20/10 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
SELF-REGULATING AND GRAVITY-INDEPENDENT DEVICE FOR HYDROGEN RECOMBINING WITH AN INTEGRATED PASSIVE HEAT SINK FOR LOW-EARTH ORBIT AND DEEP-SPACE EXPLORATION SPACECRAFT
The present disclosure provides for hydrogen recombiner assemblies utilizing an integrated passive heat sink. More particularly, the present disclosure provides for flameless hydrogen recombiner assemblies utilizing an integrated passive heat sink to convert leaked hydrogen (e.g., inside a spacecraft) to water vapor. In example embodiments, the present disclosure provides for self-regulating and gravity-independent hydrogen recombiner assemblies having an integrated passive heat sink for low-earth orbit (LEO) and deep-space exploration crewed spacecraft, with the hydrogen recombiner assemblies configured to convert leaked hydrogen (e.g., inside a spacecraft) to water vapor.
A system having: a power switching circuit providing a drive current to a load, and having: a power source; first and second serially connected switches convert DC power from the power source into AC current to form the drive current, or vice versa; a first high-bandwidth current sensor circuit measures high-side current pulses through the first switch and provides a first analog signal, proportional to the high-side pulses; a second high-bandwidth current sensor circuit measures low-side current pulses through the second switch and provides a second analog signal is proportional to the low-side pulses; a signal processing device coupled to the first and second current sensor circuits performs steps of: converting the first analog signal to a first digital signal and the second analog signal to a second digital signal; and reconstructing the drive current and obtaining its cycle average values from the first and second digital signals.
G01R 15/18 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
A fuel cell system includes: a gas turbine having a combustion chamber and a turbine; a hydrogen fuel cell configured to generate electrical energy from input air and input hydrogen; an air flow path for providing air from a source of fresh air as input air to the fuel cell and to the combustion chamber; and a closed hydrogen loop for providing hydrogen from a liquid or compressed hydrogen source to the fuel cell and to the combustion chamber. The system further includes: a hydrogen recirculation loop receiving hydrogen from the liquid or compressed hydrogen source and hydrogen used by the fuel cell to provide cooled used hydrogen, The hydrogen recirculation loop combines the cooled used hydrogen with hydrogen from the liquid or compressed hydrogen source to provide to the fuel cell as the input hydrogen.
A method for detecting an insulation fault in an unearthed electrical system, the system comprising a first rail and a second rail, each rail having an insulation resistance. The method comprises, in an initial stage: connecting the first rail to a relative ground through a first resistive component, wherein the first rail has an initial stage first rail voltage in the initial stage; and charging a capacitor to a capacitor voltage using the first rail, wherein the capacitor voltage is indicative of the initial stage first rail voltage. In a subsequent stage: connecting the second rail to the relative ground through a second resistive component; wherein the first rail has a subsequent stage first rail voltage; and determining if a fault has occurred by using the capacitor voltage and the subsequent stage first rail voltage.
G01R 31/00 - Arrangements for testing electric propertiesArrangements for locating electric faultsArrangements for electrical testing characterised by what is being tested not provided for elsewhere
A heat exchanger core includes a plurality of first medium channels along which a first medium is directed from a first first medium channel end to a second first medium end, and a plurality of second medium channels along which a second medium is directed from a first second medium channel end to a second second medium channel end. The first medium channels and/or the second medium channels are formed to have a first portion having a first cross-sectional shape and one or more second portions having a second, different cross-sectional shape. The channel transitions smoothly from the first to the second cross-sectional shape.
A controller operable to perform cleaning system control operations includes generating, using a processor system, a first electronic cleanliness measurement (ECM) associated with a cleaning target. Based at least in part on a determination that the first ECM exceeds a threshold, the processor system is used to generate a first cleaning system protocol. The processor system executes the first cleaning system protocol to control a cleaning system operable to clean debris from the cleaning target.
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
B08B 3/02 - Cleaning by the force of jets or sprays
B08B 13/00 - Accessories or details of general applicability for machines or apparatus for cleaning
An analog twin circuit device includes a sensing element and a signal conditioning circuit. The sensing element includes a signal input terminal configured to receive an input signal and a signal output terminal configured to output a signal. The signal conditioning circuit includes a first circuit input terminal connected to the signal input terminal and a second circuit input terminal connected to the signal output terminal such that the sensing element interacts directly with the input signal and delivers an output signal to the signal output terminal. The signal conditioning circuit physically models the sensing element.
G01R 1/20 - Modifications of basic electric elements for use in electric measuring instrumentsStructural combinations of such elements with such instruments
G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
75.
DIRECT CONTROLLED VARIABLE DISPLACEMENT PUMP FUEL SYSTEMS WITH LOW PRESSURE THERMAL RECIRCULATION PUMPING
The system includes a main supply line. A variable displacement pump (VDP) is in fluid communication with an inlet line and with an outlet line. An actuator is operatively connected for direct control of the variable displacement mechanism. A pressure sensor is operatively connected to the outlet line to generate feedback indicative of pressure in the outlet line. A controller is operatively connected to receive the feedback from the pressure sensor, and operatively connected to the actuator to control the variable displacement mechanism based on the feedback. An actuation system is in fluid communication to be supplied with fluid from the outlet line for use in hydraulic actuation. The actuation system includes an actuation return line connecting the hydraulic actuation system in fluid communication to return fluid to the main supply line.
F04B 49/12 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by varying the length of stroke of the working members
A supplemental power generation arrangement for an aircraft includes a duct defined in the aircraft, a ram air turbine located in the duct and driven to rotate about a turbine axis by a ram airflow through the duct. One or more accessory components are operably connected to the ram air turbine. The ram air turbine is configured to provide rotational energy to power the one or more accessory components.
An environmental control system includes an inlet configured to receive a medium and a compressing device fluidly connected to the inlet. The compressing device includes a compressor operably coupled to a turbine. An outlet of the compressor is fluidly connected to an inlet of the turbine such that the medium is provided to the compressor and the turbine in series. At least one air-liquid heat exchanger is arranged in fluid communication with the outlet of the compressor and the inlet of the turbine. The at least one air-liquid heat exchanger is also connected to a liquid loop containing a liquid. At least one air-liquid regeneration heat exchanger is fluidly connected to the liquid loop at a location upstream from the at least one air-liquid heat exchanger.
F25B 9/00 - Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
B64D 13/06 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned
B64D 13/08 - Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space the air being conditioned the air being heated or cooled
F25B 9/06 - Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using expanders
A rotor is provided and includes a central hub, an outer ring assembly comprising magnetic elements and back-to-back curved webs radially interposed between the central hub and the outer ring assembly.
H02K 1/274 - Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
H02K 1/02 - Details of the magnetic circuit characterised by the magnetic material
H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
79.
HYBRID LIQUID AND AIR COOLING OF HIGH-POWER PERMANENT MAGNET MACHINE ROTOR
An electric machine includes a housing, a stator positioned in the housing and including a stator winding, and a rotor positioned in the housing configured to rotate about a machine axis and electromagnetically interactive with the stator across an air gap between the rotor and the stator. The rotor includes a rotor core, a plurality of permanent magnets located at the rotor core, and a rotor sleeve enclosing the rotor core and the plurality of permanent magnets. The stator is cooled via a flow of cooling oil, and the rotor is cooled via a flow of cooling air directed through the air gap between the rotor sleeve and the stator.
H02K 9/197 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
H02K 9/02 - Arrangements for cooling or ventilating by ambient air flowing through the machine
H02K 9/10 - Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing
A hybrid airfoil bearing for a shaft is provided and includes airfoil bearing components and passive magnetic bearing components. The airfoil bearing components include a top foil immediately surrounding the shaft and additional components. The passive magnetic bearing components are integrated into the shaft and the additional components of the airfoil bearing components to remove a static load of the shaft on the top foil.
According to some embodiments of the present disclosure, an aircraft electric motor is disclosed. The motor includes a rotor comprising a plurality of magnet segments arranged on a frame of the rotor. The motor also includes an output shaft operably coupled to the rotor radially inward from the plurality of magnet segments and a stator. The stator includes a radially outer rim and at least one winding wrapped about a plurality of stator teeth. The stator is arranged around the rotor and includes cooling fins extending radially outward from the radially outer rim. The cooling fins include wide fins that have a width ww distributed about the radially outer rim and thin fins that have width wt. The thin fins are disposed between the wide fins. The width of the wide fins ww is greater than the width wt of the thin fins.
H02K 1/20 - Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
82.
Metal plated plastic ACM part with internal thermally adaptive structure
A component, having: a base having beads formed of with first and second thermoplastic polymers, respectively having first and second coefficients of thermal expansion (CTE), where each of the beads has an outer surface and an inner surface that abut each other; a lower support section formed on the base, having a mixture of a third thermoplastic polymer and a catalyst formed with metal; an upper support section on the component, formed on the lower support section via electrolysis deposition, a metallic coating, to thereby control thermal expansion and contraction of the component; and reinforcement fibers embedded the base, the lower support section and the upper support section.
A method includes using two parallel electrohydraulic servo valves EHSVs with a single transfer valve to move an actuator during a normal operation mode. The method includes upon failure of one of the EHSVs, using the single transfer valve to disconnect a non-operational one of the EHSVs and continuing to move the actuator with a functional one of the EHSVs in a backup mode.
F15B 13/044 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
F15B 20/00 - Safety arrangements for fluid actuator systemsApplications of safety devices in fluid actuator systemsEmergency measures for fluid actuator systems
An actuator assembly includes an actuator and an actuator housing. The actuator includes a main body portion and an actuator shaft. The actuator housing encloses the main body portion of the actuator. The actuator housing includes an outer layer, an inner ceramic fiber layer, an interior chamber that is bounded by the inner ceramic fiber layer, one or more inflow vents for receiving a first fluid, and one or more outflow vents for discharging the first fluid from the actuator housing.
A power generation system includes a generator configured to output alternating current (AC) power, an active rectifier configured to receive the AC power from the generator, convert the AC power to direct current (DC) power, and output the DC power. A current injector is connected to the active rectifier and is configured to provide an injection current to power flowing through the active rectifier. The injection current includes a reactive component.
H02J 4/00 - Circuit arrangements for mains or distribution networks not specified as ac or dc
B64D 27/35 - Arrangements for on-board electric energy production, distribution, recovery or storage
H02P 27/04 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
A motor drive system includes: a motor; a controller; a first energy source configured to supply electrical energy to the motor, a second, different energy source configured to supply electrical energy to the controller, and an energy storage device. The energy storage device is configured to supply the controller with electrical energy when there is a loss of energy from the second energy source. The motor drive system is configured to, during a braking operation, charge the energy storage device with regenerative energy from the motor.
B60W 10/08 - Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
B60W 10/26 - Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
B60W 20/13 - Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limitsControlling the power contribution of each of the prime movers to meet required power demand in order to prevent overcharging or battery depletion
In accordance with at least one aspect of this disclosure, a system includes a rotor configured to rotate about a rotor axis within a pump housing. In embodiments, the rotor includes, a first end face configured to interface with a stationary port plate, a plurality of vane slots defined in the rotor arranged circumferentially about the rotor axis configured to accept a respective vane therein, and a plurality of lands between each vane slot, wherein each land includes a portion of the first end face. The rotor also includes, a lubrication pad defined in the first end face of at least one land between neighboring vane slots such that the lubrication pad is fed by the neighboring vane slots to induce buildup of a lubrication film between the first end face and the stationary port plate in the lubrication pad.
F04C 15/00 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups
F04C 2/344 - Rotary-piston machines or pumps having the characteristics covered by two or more of groups , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group or and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
88.
Active rectifier with phase locked varying switch frequencies
A power distribution system includes a variable frequency alternating current (AC) generator, an active rectifier electrically connected to the variable frequency AC generator such that AC power output from the variable frequency AC generator is rectified by the active rectifier, and a switching controller configured to detect a fundamental frequency of the AC power output and lock an active switch rate of the active rectifier to an integer multiple of the fundamental frequency.
An airfoil, having: a body defining a leading edge and a trailing edge, wherein the body comprises: a base having an outer boundary extending longitudinally from a first end to a second end and transversely from a first side to a second side; and beads within the outer boundary, wherein each of the beads has a bead void, and wherein one or more of the beads includes: damping element within the bead void; or stiffening element extending across the bead.
H10N 10/17 - Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the structure or configuration of the cell or thermocouple forming the device
A variable displacement pump can include a rotor having a plurality of vanes, and a cam ring surrounding the rotor and vanes. The vanes can be configured to extend from the rotor and contact an inner cam surface of the cam ring. The pump can also include one or more radial actuators configured to apply a radial force to the cam ring to control a position of the cam ring and the pumping action.
F04C 14/22 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
F04C 2/356 - Rotary-piston machines or pumps having the characteristics covered by two or more of groups , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group or and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
91.
PRESSURE SENSITIVE STOP STROKE FOR VARIABLE DISPLACEMENT PUMPS
A system includes a variable displacement pump (VDP) in fluid communication with an inlet line and with an outlet line. The VDP includes a variable displacement mechanism configured to vary pressure to the outlet line. The VDP includes a variable stop configured to vary minimum displacement of the variable displacement mechanism based on position of the variable stop relative to a housing of the VDP. A pressure sensing valve (PSV) is operatively connected between the inlet line and the outlet line to actuate a stop member to adjust stopping position of the variable stop based on pressure differential between the inlet line and the outlet line.
F04B 49/16 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by adjusting the capacity of dead spaces of working chambers
F04B 49/22 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by means of valves
92.
ACTIVE DISPLACEMENT CONTROL AGAINST TEMPERATURE TARGET
A system includes a variable displacement pump (VDP) in fluid communication with an inlet line and with an outlet line. The VDP includes a variable displacement mechanism. A bypass valve (BPV) includes a BPV inlet in fluid communication with the outlet line, and a BPV outlet in fluid communication with a bypass line that feeds into the inlet line upstream of the VDP. An actuator is operatively connected to control the BPV to vary flow from the BPV inlet to the bypass line. An electromechanical actuator (EMA) is operatively connected to actuate the variable displacement mechanism. A temperature sensor is operatively connected to the outlet line to generate sensor output indicative of fluid temperature in the outlet line, wherein the temperature sensor is operatively connected to a controller for active control of the EMA and/or of the actuator based on temperature in the outlet line.
A system includes a variable displacement pump (VDP) in fluid communication with an inlet line and with an outlet line. The VDP includes a variable displacement mechanism configured to vary pressure to the outlet line. A bypass valve (BPV) includes a BPV inlet in fluid communication with the outlet line, and a BPV outlet in fluid communication with a bypass line that feeds into the inlet line upstream of the VDP. The BPV includes a thermostatic actuator configured to control recirculation flow amount through the BPV based on fluid temperature in the BPV. A method includes thermostatically controlling a bypass valve (BPV) to recirculate flow from the outlet line to an input line of the VDP in the event of flow demanded by the downstream system dropping below a predetermined low threshold of flow through the VDP based on fluid temperature in the BPV.
F04B 49/16 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by adjusting the capacity of dead spaces of working chambers
An aircraft system includes a thermal load, a controller, a tank for storing a cooling liquid, and a supply system for moving the cooling liquid outwardly of the tank and through a control valve to the thermal load. A controller is programmed to control the supply system. A conduit downstream of the thermal load is configured to communicate the cooling liquid to a fuel metering unit. The fuel metering unit also receives fuel from a high pressure pump. The fuel metering unit is configured to deliver a mixture of the cooling liquid and the fuel into a combustor on an associated aircraft engine. The controller programmed to determine a percentage solubility of the cooling fluid into the fuel at a detected temperature and pressure of the fuel reaching the fuel metering unit. The cooling fluid is combustible and soluble in the fuel. An aircraft and a method are also disclosed.
A fluid pump system can include a controllable pump configured to generate a pump flow through the controllable pump and to output an output flow to an output line. The fluid pump system can include a flow split system configured to be in fluid communication with the controllable pump in a bypass state such that the flow split system is configured to divert a portion of the pump flow to maintain a desired output flow to the output line but to also allow the controllable pump to maintain a minimum pump flow through the controllable pump to maintain pump temperature below a high temperature threshold.
A system 100 comprising: a gas turbine 110 having a combustion chamber 114; a first heat exchanger HX1 configured to receive a first stream of compressed air CA1 and a stream of liquid hydrogen LH, wherein the first heat exchanger HX1 is configured to transfer heat between the first stream of compressed air CA1 and the stream of liquid hydrogen LH to yield a stream of liquid oxygen LO and a stream of gaseous hydrogen GH; and a second heat exchanger HX2 configured to receive the stream of liquid oxygen LO and a second stream of compressed air CA2, wherein the second heat exchanger HX2 is configured to transfer heat between the second stream of compressed air CA2 and the stream of liquid oxygen LO to yield a stream of gaseous oxygen GO; wherein the system is configured to direct the stream of gaseous hydrogen GH and the stream of gaseous oxygen GO to the combustion chamber 114.
H01M 8/04111 - Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants using a compressor turbine assembly
A system includes a variable displacement pump (VDP) in fluid communication with an inlet line and with an outlet line. The VDP includes a variable displacement mechanism configured to vary pressure to the outlet line. A relief valve (RV) includes an RV inlet in fluid communication with the outlet line, and an RV outlet in fluid communication with a bypass line that feeds into the inlet line upstream of the VDP. An actuator is operatively connected to control the RV to change function of the RV between a first function and a second function. The first function is a high pressure relief valve function. The second function is as a wind milling bypass function. A controller is operatively connected to the actuator to control the RV to change back and forth between the first function and the second function.
F04B 49/22 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by means of valves
A system includes a variable displacement pump (VDP) in fluid communication with an inlet line and with an outlet line. The VDP includes a variable displacement mechanism configured to vary pressure to the outlet line. An electromechanical actuator (EMA) is operatively connected to actuate the variable displacement mechanism. A flow sensing valve (FSV) connected in the outlet line. The FSV includes a sensor configured to generate sensor data indicative of flow out of the outlet line. A controller is operatively connected to the EMA to control the variable displacement mechanism based on the sensor data to support flow demands from one or more downstream systems.
F02C 9/30 - Control of fuel supply characterised by variable fuel pump output
F04C 14/24 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves
A controllable pump system can include an inlet line and a pressure controlled pump connected to the inlet line to receive input flow. The pressure controlled pump can have a pressure controlled pump state configured to control a pump output to an output line connected to the pressure controlled pump. The system can include a slew pump connected to the inlet line and configured to output a slew pump pressure, and a slew pressure valve connected to the input line and to a second line and configured to output a control pressure to the pressure controlled pump. The second line can be configured to be in fluid communication with at least the slew pump such that the slew pressure valve can receive the slew pump pressure.
A fuel system can include a main pump assembly having a main fuel pump connected to an input line and configured to pump fuel to a main fuel control via a main fuel control line, a recirculation pump connected to the input line, and a fuel recirculation system connected to the recirculation pump and upstream of the main fuel control. The fuel recirculation system can be configured to select a mode from a plurality of modes. The plurality of modes can include a recirculation mode and a backup mode. The fuel recirculation system can be configured to recirculate fuel from the recirculation pump to a tank through one or more coolers in the recirculation mode, and to provide fuel to the main fuel control in the backup mode.
