Methods and apparatus for operating gas turbine engines

F - Mech Eng,Light,Heat,Weapons – 02 – C

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F02C 6/06 (2006.01) B64D 33/00 (2006.01) F02C 9/18 (2006.01) F02K 3/06 (2006.01) F02K 3/12 (2006.01)

Patent

CA 2455222

A gas turbine engine assembly (10) is provided for use with an aircraft. The gas turbine engine assembly comprises a propelling gas turbine engine and an auxiliary power unit (12). The propelling gas turbine engine includes a fan (14) and a core engine (11) for generating thrust for the aircraft. The gas turbine engine also includes a bypass duct (50) extending downstream from an exit of the fan to the core engine. The auxiliary power unit includes at least one turbine and an inlet that is coupled in flow communication with the gas turbine engine bypass duct, such that a portion of airflow (52) entering the gas turbine bypass duct is channeled for use by said auxiliary power unit.

Un moteur à turbine à gaz (10) est fourni pour un avion. Ce moteur à turbine à gaz est composé d'un moteur de propulsion à turbine à gaz et d'un groupe auxiliaire de bord (12). Le moteur de propulsion à turbine à gaz comprend une soufflante (14) et une partie chaude (11) qui génèrent la poussée de l'avion. Le moteur à turbine à gaz comprend aussi un conduit de dérivation (50) qui se prolonge en aval à partir d'une sortie de la soufflante jusqu'à la partie chaude du moteur. Le groupe auxiliaire de bord comprend au moins une turbine et une entrée, qui est couplée au conduit de dérivation de la turbine à gaz, de façon à ce qu'une partie du flux d'air (52) qui entre dans le conduit de dérivation de la turbine à gaz soit acheminé pour être utilisé par le groupe auxiliaire de bord.

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