|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 9 인용 특허 : 22|
An inlet door assembly and method for reducing noise from an auxiliary power unit (APU) contained within an aircraft housing is provided. The inlet assembly includes an inlet duct, an actuator, and a door. The inlet duct is configured to extend from the auxiliary power unit to the aircraft housing and has a sidewall that defines a flow passage through which APU noise propagates. The actuator is disposed at least partially within the inlet duct. The door coupled to the actuator. The actuator is also configured to selectively rotate the door between at lea...
The invention claimed is: 1. An inlet door assembly for reducing noise from an auxiliary power unit (APU) contained within an aircraft having a forward end and an aft end, the inlet assembly comprising: a duct having a sidewall including a forward wall and an aft wall and defining an inlet port, an outlet port, and a flow passage therebetween through which APU noise propagates; a first door rotationally mounted on the forward wall of the duct and having an inner surface facing the duct flow passage and an outer surface forming an exterior of the aircraf...