|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||060/792; 060/793; 060/802|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 29 인용 특허 : 34|
A turbofan gas turbine propulsion engine includes a multi-speed transmission between the high pressure and low pressure turbines and associated high pressure and low pressure starter-generators. The multi-speed transmission reduces the operating speed range from the low pressure turbine to its associated starter-generator, and is configurable to allow the starter-generator associated with the low pressure turbine to supply starting torque to the engine.
We claim: 1. A multi-spool gas turbine engine, comprising: a gas turbine engine including at least a high pressure turbine and a low pressure turbine, each turbine adapted to receive a flow of combusted gas and operable, upon receipt thereof, to generate rotational energy; a high pressure starter-generator coupled to the high pressure turbine and configured to selectively operate in either (i) a generator mode, in which at least a portion of the rotational energy generated by the high pressure turbine is converted to electrical energy or (ii) a motor mo...