Abrégé

A method of imaging a test subject includes providing one or more moveable sensors to sense an attribute of the test subject (e.g., acoustic pressure), wherein the attribute has a tonal noise component and a broadband noise component. A rotational sensor is provided to sense a rotational velocity of a rotational element of the test subject. Each of the moveable sensors are moved along a path while continuously acquiring test data that is indicative of the rotational velocity of the rotational element, the sensed attribute, the position, and the orientation of each of the moveable sensors. A set of transfer functions corresponding to points in space that have been visited by the moveable sensors are constructed, each of the transfer functions relating the test data of the moveable sensors to the test data of the rotational sensor. A visual representation of the tonal noise component of the attribute in a region adjacent the test subject is produced using the set of transfer functions.

Classes IPC  ?

• G01N 29/00 - Recherche ou analyse des matériaux par l'emploi d'ondes ultrasonores, sonores ou infrasonoresVisualisation de l'intérieur d'objets par transmission d'ondes ultrasonores ou sonores à travers l'objet
• G01N 29/06 - Visualisation de l'intérieur, p. ex. microscopie acoustique
• G03H 3/00 - Procédés ou appareils holographiques utilisant des ondes ultrasonores, sonores ou infrasonores pour obtenir des hologrammesProcédés ou appareils pour en obtenir une image optique
• G03H 1/04 - Procédés ou appareils pour produire des hologrammes

Abrégé

An aircraft control structure for drag management includes a nozzle structure configured to exhaust a swirling fluid stream. A plurality of swirl vanes are positioned within the nozzle structure, and an actuation subsystem is configured to cause the plurality of swirl vanes to move from a deployed state to a non-deployed state. In the non-deployed state, the plurality of swirl vanes are substantially flush with the inner surface of the nozzle structure. In the deployed state, the plurality of swirl vanes produce the swirling fluid stream.

Classes IPC  ?

• F01D 17/10 - Organes de commande terminaux
• F02K 1/42 - Tuyères comportant des moyens pour diviser le jet en plusieurs jets partiels ou possédant une section de sortie allongée les moyens étant déplaçables dans une position inopérante

Abrégé

A modular crossing system generally includes a set of modules and a set of segments (e.g., bridge segments). Each segment includes a subset of the set of modules, and at least a portion of the set of segments are configured to be rotateably interlocked with a subsequent segment such that the set of segments form a crossing assembly having a deployed state and a collapsed state. Each module of the set of modules may include a hinge pin opening configured to removeably accept one of the set of hinge pins. The set of segments may be rotateably interlocked via the set of hinge pins.

Classes IPC  ?

• E01D 15/12 - Ponts portatifs ou démontables par sections
• B63B 27/14 - Aménagement des équipements de bord pour l'embarquement ou le débarquement des cargaisons ou des passagers des rampes, coupées ou échelles extérieures
• E04B 1/343 - Structures caractérisées par des parties mobiles, séparables ou repliables, p. ex. pour le transport
• E04B 1/344 - Structures caractérisées par des parties mobiles, séparables ou repliables, p. ex. pour le transport avec des parties à charnières

Abrégé

A continuous scanning method employs one or more moveable sensors and one or more reference sensors deployed in the environment around a test subject. Each sensor is configured to sense an attribute of the test subject (e.g., sound energy, infrared energy, etc.) while continuously moving along a path and recording the sensed attribute, the position, and the orientation of each of the moveable sensors and each of the reference sensors. The system then constructs a set of transfer functions corresponding to points in space between the moveable sensors, wherein each of the transfer functions relates the test data of the moveable sensors to the test data of the reference sensors. In this way, a graphical representation of the attribute in the vicinity of test subject can be produced.

Classes IPC  ?

• G03H 3/00 - Procédés ou appareils holographiques utilisant des ondes ultrasonores, sonores ou infrasonores pour obtenir des hologrammesProcédés ou appareils pour en obtenir une image optique
• G03H 1/08 - Procédés ou appareils pour produire des hologrammes pour faire des hologrammes synthétiques

Abrégé

A multi-sine vibration testing method includes coupling a vibratory excitation source and a sensor to a test structure, then providing a reference signal to the excitation source, wherein the reference signal comprises a first sinusoidal waveform having a first frequency and a second sinusoidal waveform having a second frequency different from the first frequency. The first frequency and the second frequency each sweep between a corresponding start value and a corresponding end value, and the frequency response is measured from each of the sensors while providing the reference signal.

Classes IPC  ?

• G01N 29/04 - Analyse de solides

Produits et services

Mechanical, aerospace, structural, and software engineering services; consulting services in the fields of mechanical, aerospace, structural, and software engineering; computer software testing, design and analysis for others; computer software diagnostic services; design for others in the field of mechanical, aerospace, and structural engineering; but not including any services performed in the field of wind tunnel testing

Produits et services

Computer software for the design, analysis and testing of mechanical and aerospace structures and systems, but not for use in wind tunnel testing