Apparatus and method for measuring loads sustained by a...

G - Physics – 01 – G

Patent

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G01G 19/12 (2006.01) G01L 1/22 (2006.01)

Patent

CA 2594519

A pin bearing arrangement for use on an aircraft landing gear includes a pin (2) and means (5), including strain gauges (4) for measuring shear loads and accelerometers (17) for measuring loads sustained by the pin. The pin includes a self-contained data logging device for logging data concerning loads sustained by the pin. Thus, inside the pin, there is provided a processing unit (10), a memory store (12), and a battery-based power source (14). During normal operation of the aircraft fatigue loads can be monitored, the processing unit (10) receiving input signals from the means (5) for measuring loads and storing load data in the memory (12). The stored load data is periodically extracted from the memory (12) during maintenance of the aircraft.

L~invention concerne un montage de palier à goupille destiné à être utilisé sur un train d~atterrissage d~aéronef, comprenant une goupille (2) et des moyens (5), comportant des jauges de contraintes (4) pour mesurer des charges de cisaillement et des accéléromètres (17) pour mesurer des charges s~exerçant sur la goupille. La goupille comprend un dispositif d~enregistrement de données autonome pour enregistrer des données relatives aux charges s~exerçant sur la goupille. Un module de traitement (10), une mémoire (12) et une source d~alimentation par batterie (14) sont donc incorporés dans la goupille. Les charges de fatigue s~exerçant sur l~aéronef peuvent donc être contrôlées pendant le fonctionnement normal de l~aéronef, le module de traitement (10) recevant des signaux d~entrée en provenance des moyens (5) de mesure de charges et stockant des données de charge dans la mémoire (12). Les données de charge stockées sont extraites périodiquement de la mémoire (12) lors de la maintenance de l~aéronef.

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