Operation of an aircraft engine after emergency shutdown

Details Operation of an aircraft engine after emergency shutdown Operation of an aircraft engine after emergency shutdown

B - Operations, Transporting

64

D

B64D 31/00 (2006.01)

Patent

CA 2687110

A method of emergency operation of an aircraft turbofan engine (10) during an aircraft flight is provided. The engine includes a fan shaft (14) with a fan (12), and an electric motor/generator (24) mounted for rotation therewith. The method includes shutting down the engine (10) while allowing the engine (10) to windmill, operating the electric motor/generator (24) to rotate the shaft (14) at a determined windmilling speed which is desired for the fan shaft (14), and operating the engine (10) at the desired windmilling speed for substantially a remainder of the aircraft flight.

L'invention concerne un procédé de fonctionnement d'urgence du réacteur à double flux d'un avion (10) en vol. Le moteur comprend un arbre de soufflante (14) muni d'une soufflante (12) et un moteur/générateur électrique (24) monté pour rotation avec celui-ci. Le procédé consiste à arrêter le moteur (10) tout en permettant au moteur (10) de tourner en autorotation; actionner le moteur/générateur électrique (24) pour faire tourner l'arbre (14) à une vitesse d'autorotation déterminée, désirée pour l'arbre de soufflante (14); et actionner le moteur (10) à la vitesse d'autorotation désirée pendant sensiblement le reste du vol.

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