|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||F02C-001/00 F02C-007/262 F02C-007/32|
|미국특허분류(USC)||060/772; 060/778; 060/786; 060/802|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 2 인용 특허 : 7|
The method and apparatus for in-flight relighting of a turbofan engine involve in one aspect selectively controlling an accessory drag load on one or more windmilling rotors to permit control of the windmill speed to an optimum value for relight conditions.
1. A method for in-flight relighting an aircraft turbofan engine, the engine having at least two shafts, one of which is a high-pressure shaft mounted to a high-pressure compressor, a high-pressure turbine and an electrical generator, the generator electrically driving an accessory load, the method comprising: determining the presence of an engine-out condition of the engine;controlling a current of the generator to reduce the rate of rotation of the high pressure shaft to a desired rate within a relight envelope; andrelighting the engine. 2. The method ...