IPC Classification

Class code (prefix) Descriptions Number of results
B64C 1/00 FuselagesConstructional features common to fuselages, wings, stabilising surfaces or the like
B64C 1/06 FramesStringersLongerons
B64C 1/08 Geodetic or other open-frame structures
B64C 1/10 Bulkheads
B64C 1/12 Construction or attachment of skin panels
B64C 1/14 WindowsDoorsHatch covers or access panelsSurrounding frame structuresCanopiesWindscreens
B64C 1/16 FuselagesConstructional features common to fuselages, wings, stabilising surfaces or the like specially adapted for mounting power plant
B64C 1/18 Floors
B64C 1/20 Floors specially adapted for freight
B64C 1/22 Other structures integral with fuselages to facilitate loading
B64C 1/24 Steps mounted on, and retractable within, fuselages
B64C 1/26 Attaching the wing or tail units or stabilising surfaces
B64C 1/28 Parts of fuselage relatively movable to improve pilots view
B64C 1/30 Parts of fuselage relatively movable to reduce overall dimensions of aircraft
B64C 1/32 Severable or jettisonable parts of fuselage facilitating emergency escape
B64C 1/34 FuselagesConstructional features common to fuselages, wings, stabilising surfaces or the like comprising inflatable structural components
B64C 1/36 FuselagesConstructional features common to fuselages, wings, stabilising surfaces or the like adapted to receive antennas or radomes
B64C 1/38 Constructions adapted to reduce effects of aerodynamic or other external heating
B64C 1/40 Sound or heat insulation
B64C 3/00 Wings
B64C 3/10 Shape of wings
B64C 3/14 Aerofoil profile
B64C 3/16 Frontal aspect
B64C 3/18 SparsRibsStringers
B64C 3/20 Integral or sandwich constructions
B64C 3/22 Geodetic or other open-frame structures
B64C 3/24 Moulded or cast structures
B64C 3/26 Construction, shape, or attachment of separate skins, e.g. panels
B64C 3/28 Leading or trailing edges attached to primary structures, e.g. forming fixed slots
B64C 3/30 Wings comprising inflatable structural components
B64C 3/32 Wings specially adapted for mounting power plant
B64C 3/34 Tanks constructed integrally with wings, e.g. for fuel or water
B64C 3/36 Structures adapted to reduce effects of aerodynamic or other external heating
B64C 3/38 Adjustment of complete wings or parts thereof
B64C 3/40 Varying angle of sweep
B64C 3/42 Adjusting about chordwise axes
B64C 3/44 Varying camber
B64C 3/46 Varying camber by inflatable elements
B64C 3/48 Varying camber by relatively-movable parts of wing structures
B64C 3/50 Varying camber by leading or trailing edge flaps
B64C 3/52 Warping
B64C 3/54 Varying in area
B64C 3/56 Folding or collapsing to reduce overall dimensions of aircraft
B64C 3/58 Wings provided with fences or spoilers
B64C 5/00 Stabilising surfaces
B64C 5/02 Tailplanes
B64C 5/04 Noseplanes
B64C 5/06 Fins
B64C 5/08 Stabilising surfaces mounted on, or supported by, wings
B64C 5/10 Stabilising surfaces adjustable
B64C 5/12 Stabilising surfaces adjustable for retraction against or within fuselage or nacelle
B64C 5/14 Varying angle of sweep
B64C 5/16 Stabilising surfaces adjustable about spanwise axes
B64C 5/18 Stabilising surfaces adjustable in area
B64C 7/00 Structures or fairings not otherwise provided for
B64C 7/02 Nacelles
B64C 9/00 Adjustable control surfaces or members, e.g. rudders
B64C 9/02 Mounting or supporting thereof
B64C 9/04 Adjustable control surfaces or members, e.g. rudders with compound dependent movements
B64C 9/06 Adjustable control surfaces or members, e.g. rudders with two or more independent movements
B64C 9/08 Adjustable control surfaces or members, e.g. rudders bodily displaceable
B64C 9/10 Adjustable control surfaces or members, e.g. rudders one surface adjusted by movement of another, e.g. servo tabs
B64C 9/12 Adjustable control surfaces or members, e.g. rudders surfaces of different type or function being simultaneously adjusted
B64C 9/14 Adjustable control surfaces or members, e.g. rudders forming slots
B64C 9/16 Adjustable control surfaces or members, e.g. rudders forming slots at the rear of the wing
B64C 9/18 Adjustable control surfaces or members, e.g. rudders forming slots at the rear of the wing by single flaps
B64C 9/20 Adjustable control surfaces or members, e.g. rudders forming slots at the rear of the wing by multiple flaps
B64C 9/22 Adjustable control surfaces or members, e.g. rudders forming slots at the front of the wing
B64C 9/24 Adjustable control surfaces or members, e.g. rudders forming slots at the front of the wing by single flap
B64C 9/26 Adjustable control surfaces or members, e.g. rudders forming slots at the front of the wing by multiple flaps
B64C 9/28 Adjustable control surfaces or members, e.g. rudders forming slots by flaps at both the front and rear of the wing operating in unison
B64C 9/30 Balancing hinged surfaces, e.g. dynamically
B64C 9/32 Air braking surfaces
B64C 9/34 Adjustable control surfaces or members, e.g. rudders collapsing or retracting against or within other surfaces or other members
B64C 9/36 Adjustable control surfaces or members, e.g. rudders collapsing or retracting against or within other surfaces or other members the members being fuselages or nacelles
B64C 9/38 Jet flaps
B64C 11/00 Propellers, e.g. of ducted typeFeatures common to propellers and rotors for rotorcraft
B64C 11/02 Hub construction
B64C 11/04 Blade mountings
B64C 11/06 Blade mountings for variable-pitch blades
B64C 11/08 Blade mountings for non-adjustable blades
B64C 11/10 Blade mountings for non-adjustable blades rigid
B64C 11/12 Blade mountings for non-adjustable blades flexible
B64C 11/14 Spinners
B64C 11/16 Blades
B64C 11/18 Aerodynamic features
B64C 11/20 Constructional features
B64C 11/22 Solid blades
B64C 11/24 Hollow blades
B64C 11/26 Fabricated blades
B64C 11/28 Collapsible or foldable blades
B64C 11/30 Blade pitch-changing mechanisms
B64C 11/32 Blade pitch-changing mechanisms mechanical
B64C 11/34 Blade pitch-changing mechanisms mechanical automatic
B64C 11/36 Blade pitch-changing mechanisms mechanical non-automatic
B64C 11/38 Blade pitch-changing mechanisms fluid, e.g. hydraulic
B64C 11/40 Blade pitch-changing mechanisms fluid, e.g. hydraulic automatic
B64C 11/42 Blade pitch-changing mechanisms fluid, e.g. hydraulic non-automatic
B64C 11/44 Blade pitch-changing mechanisms electric
B64C 11/46 Arrangements of, or constructional features peculiar to, multiple propellers
B64C 11/48 Units of two or more coaxial propellers
B64C 11/50 Phase synchronisation between multiple propellers
B64C 13/00 Control systems or transmitting systems for actuating flying-control surfaces, lift-increasing flaps, air brakes, or spoilers
B64C 13/02 Initiating means
B64C 13/04 Initiating means actuated personally
B64C 13/06 Initiating means actuated personally adjustable to suit individual persons
B64C 13/08 Trimming zero positions
B64C 13/10 Initiating means actuated personally comprising warning devices
B64C 13/12 Dual control apparatus
B64C 13/14 Initiating means actuated personally lockable
B64C 13/16 Initiating means actuated automatically, e.g. responsive to gust detectors
B64C 13/18 Initiating means actuated automatically, e.g. responsive to gust detectors using automatic pilot
B64C 13/20 Initiating means actuated automatically, e.g. responsive to gust detectors using radiated signals
B64C 13/22 Initiating means actuated automatically, e.g. responsive to gust detectors readily revertible to personal control
B64C 13/24 Transmitting means
B64C 13/26 Transmitting means without power amplification or where power amplification is irrelevant
B64C 13/28 Transmitting means without power amplification or where power amplification is irrelevant mechanical
B64C 13/30 Transmitting means without power amplification or where power amplification is irrelevant mechanical using cable, chain, or rod mechanisms
B64C 13/32 Transmitting means without power amplification or where power amplification is irrelevant mechanical using cam mechanisms
B64C 13/34 Transmitting means without power amplification or where power amplification is irrelevant mechanical using toothed gearing
B64C 13/36 Transmitting means without power amplification or where power amplification is irrelevant fluid
B64C 13/38 Transmitting means with power amplification
B64C 13/40 Transmitting means with power amplification using fluid pressure
B64C 13/42 Transmitting means with power amplification using fluid pressure having duplication or stand-by provisions
B64C 13/44 Transmitting means with power amplification using fluid pressure overriding of personal controlsTransmitting means with power amplification using fluid pressure with automatic return to inoperative position
B64C 13/46 Transmitting means with power amplification using fluid pressure with artificial feel
B64C 13/48 Transmitting means with power amplification using fluid pressure characterised by the fluid being gaseous
B64C 13/50 Transmitting means with power amplification using electrical energy
B64C 15/00 Attitude, flight direction or altitude control by jet reaction
B64C 15/02 Attitude, flight direction or altitude control by jet reaction the jets being propulsion jets
B64C 15/12 Attitude, flight direction or altitude control by jet reaction the jets being propulsion jets the power plant being tiltable
B64C 15/14 Attitude, flight direction or altitude control by jet reaction the jets being other than main propulsion jets
B64C 17/00 Aircraft stabilisation not otherwise provided for
B64C 17/02 Aircraft stabilisation not otherwise provided for by gravity or inertia-actuated apparatus
B64C 17/04 Aircraft stabilisation not otherwise provided for by gravity or inertia-actuated apparatus by pendular bodies
B64C 17/06 Aircraft stabilisation not otherwise provided for by gravity or inertia-actuated apparatus by gyroscopic apparatus
B64C 17/08 Aircraft stabilisation not otherwise provided for by ballast supply or discharge
B64C 17/10 Transferring fuel to adjust trim
B64C 19/00 Aircraft control not otherwise provided for
B64C 19/02 Conjoint controls
B64C 21/00 Influencing air flow over aircraft surfaces by affecting boundary layer flow
B64C 21/01 Boundary layer ingestion [BLI] propulsion
B64C 21/02 Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like
B64C 21/04 Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like for blowing
B64C 21/06 Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like for sucking
B64C 21/08 Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like adjustable
B64C 21/10 Influencing air flow over aircraft surfaces by affecting boundary layer flow using other surface properties, e.g. roughness
B64C 23/00 Influencing air flow over aircraft surfaces, not otherwise provided for
B64C 23/02 Influencing air flow over aircraft surfaces, not otherwise provided for by means of rotating members of cylindrical or similar form
B64C 23/04 Influencing air flow over aircraft surfaces, not otherwise provided for by generating shock waves
B64C 23/06 Influencing air flow over aircraft surfaces, not otherwise provided for by generating vortices
B64C 23/08 Influencing air flow over aircraft surfaces, not otherwise provided for using Magnus effect
B64C 25/00 Alighting gear
B64C 25/02 Undercarriages
B64C 25/04 Arrangement or disposition on aircraft
B64C 25/06 Undercarriages fixed
B64C 25/08 Undercarriages non-fixed, e.g. jettisonable
B64C 25/10 Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
B64C 25/12 Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like sideways
B64C 25/14 Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like fore-and-aft
B64C 25/16 Fairings movable in conjunction with undercarriage elements
B64C 25/18 Operating mechanisms
B64C 25/20 Operating mechanisms mechanical
B64C 25/22 Operating mechanisms fluid
B64C 25/24 Operating mechanisms electric
B64C 25/26 Control or locking systems therefor
B64C 25/28 Control or locking systems therefor with indicating or warning devices
B64C 25/30 Control or locking systems therefor emergency actuated
B64C 25/32 Alighting gear characterised by elements which contact the ground or similar surface
B64C 25/34 Alighting gear characterised by elements which contact the ground or similar surface wheeled type, e.g. multi-wheeled bogies
B64C 25/36 Arrangements or adaptations of wheels, tyres or axles in general
B64C 25/38 Alighting gear characterised by elements which contact the ground or similar surface endless-track type
B64C 25/40 Alighting gear characterised by elements which contact the ground or similar surface the elements being rotated before touch-down
B64C 25/42 Arrangement or adaptation of brakes
B64C 25/44 Actuating mechanisms
B64C 25/46 Brake regulators for preventing skidding or aircraft somersaulting
B64C 25/48 Actuating mechanisms differentially operated for steering purposes
B64C 25/50 Steerable undercarriagesShimmy-damping
B64C 25/52 Skis or runners
B64C 25/54 Floats
B64C 25/56 Floats inflatable
B64C 25/58 Arrangements or adaptations of shock-absorbers or springs
B64C 25/60 Oleo legs
B64C 25/62 Spring shock-absorbersSprings
B64C 25/64 Spring shock-absorbersSprings using rubber or like elements
B64C 25/66 Convertible alighting gearCombinations of different kinds of ground or like engaging elements
B64C 25/68 Arrester hooks
B64C 27/00 RotorcraftRotors peculiar thereto
B64C 27/02 Gyroplanes
B64C 27/04 Helicopters
B64C 27/06 Helicopters with single rotor
B64C 27/08 Helicopters with two or more rotors
B64C 27/10 Helicopters with two or more rotors arranged coaxially
B64C 27/12 Rotor drives
B64C 27/14 Direct drive between power plant and rotor hub
B64C 27/16 Drive of rotors by means, e.g. propellers, mounted on rotor blades
B64C 27/18 Drive of rotors by means, e.g. propellers, mounted on rotor blades the means being jet-reaction apparatus
B64C 27/20 Rotorcraft characterised by having shrouded rotors, e.g. flying platforms
B64C 27/22 Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft
B64C 27/24 Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft with rotor blades fixed in flight to act as lifting surfaces
B64C 27/26 Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft characterised by provision of fixed wings
B64C 27/28 Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft with forward-propulsion propellers pivotable to act as lifting rotors
B64C 27/30 Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft with provision for reducing drag of inoperative rotor
B64C 27/32 Rotors
B64C 27/33 Rotors having flexing arms
B64C 27/35 Rotors having elastomeric joints
B64C 27/37 Rotors having articulated joints
B64C 27/39 Rotors having articulated joints with individually articulated blades, i.e. with flapping or drag hinges
B64C 27/41 Rotors having articulated joints with flapping hinge or universal joint, common to the blades
B64C 27/43 Rotors having articulated joints with flapping hinge or universal joint, common to the blades see-saw type, i.e. two-bladed rotor
B64C 27/45 Rotors having articulated joints with a feathering hinge only
B64C 27/46 Blades
B64C 27/48 Root attachment to rotor head
B64C 27/50 Blades foldable to facilitate stowage of aircraft
B64C 27/51 Damping of blade movements
B64C 27/52 Tilting of rotor bodily relative to fuselage
B64C 27/54 Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
B64C 27/56 Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement characterised by the control initiating means, e.g. manually actuated
B64C 27/57 Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement characterised by the control initiating means, e.g. manually actuated automatic or condition responsive, e.g. responsive to rotor speed, torque or thrust
B64C 27/58 Transmitting means, e.g. interrelated with initiating means or means acting on blades
B64C 27/59 Transmitting means, e.g. interrelated with initiating means or means acting on blades mechanical
B64C 27/64 Transmitting means, e.g. interrelated with initiating means or means acting on blades using fluid pressure, e.g. having fluid power amplification
B64C 27/68 Transmitting means, e.g. interrelated with initiating means or means acting on blades using electrical energy, e.g. having electrical power amplification
B64C 27/72 Means acting on blades
B64C 27/78 Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement in association with pitch adjustment of blades of anti-torque rotor
B64C 27/80 Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement for differential adjustment of blade pitch between two or more lifting rotors
B64C 27/82 RotorcraftRotors peculiar thereto characterised by the provision of an auxiliary rotor or fluid-jet device for counter-balancing lifting-rotor torque or changing direction of rotorcraft
B64C 27/467 Aerodynamic features
B64C 27/473 Constructional features
B64C 27/605 Transmitting means, e.g. interrelated with initiating means or means acting on blades mechanical including swash plate, spider or cam mechanisms
B64C 27/615 Transmitting means, e.g. interrelated with initiating means or means acting on blades mechanical including flaps mounted on blades
B64C 27/625 Transmitting means, e.g. interrelated with initiating means or means acting on blades mechanical including rotating masses or servo rotors
B64C 27/635 Transmitting means, e.g. interrelated with initiating means or means acting on blades mechanical specially for controlling lag-lead movements of blades
B64C 29/00 Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft
B64C 29/02 Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft having its flight directional axis vertical when grounded
B64C 29/04 Aircraft capable of landing or taking-off vertically, e.g. vertical take-off and landing [VTOL] aircraft having its flight directional axis vertical when grounded characterised by jet-reaction propulsion
B64C 30/00 Supersonic type aircraft
B64C 31/00 Aircraft intended to be sustained without power plantPowered hang-glider-type aircraftMicrolight-type aircraft
B64C 31/02 Gliders, e.g. sailplanes
B64C 31/04 Man-powered aircraft
B64C 31/06 Kites
B64C 31/024 Gliders, e.g. sailplanes with auxiliary power plant
B64C 31/028 Hang-glider-type aircraftMicrolight-type aircraft
B64C 31/032 Hang-glider-type aircraftMicrolight-type aircraft having delta shaped wing
B64C 31/036 Hang-glider-type aircraftMicrolight-type aircraft having parachute-type wing
B64C 33/00 Ornithopters
B64C 33/02 WingsActuating mechanisms therefor
B64C 35/00 Flying-boatsSeaplanes
B64C 35/02 Flying-boat hulls
B64C 37/00 Convertible aircraft
B64C 37/02 Flying units formed by separate aircraft
B64C 39/00 Aircraft not otherwise provided for
B64C 39/02 Aircraft not otherwise provided for characterised by special use
B64C 39/04 Aircraft not otherwise provided for having multiple fuselages or tail booms
B64C 39/06 Aircraft not otherwise provided for having disc- or ring-shaped wings
B64C 39/08 Aircraft not otherwise provided for having multiple wings
B64C 39/10 All-wing aircraft
B64C 39/12 Canard-type aircraft
B64C 99/00 Subject matter not provided for in other groups of this subclass