|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||F02K-001/00 F02K-001/18 B64D-033/04 F02K-001/30 F02K-001/72 B64D-031/00 F01D-005/06 F01D-025/24 F02K-003/06 F04D-029/32 F04D-029/38 F04D-029/52 F04D-029/56 B64D-027/16 F02C-007/36|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 0 인용 특허 : 44|
A turbofan engine includes a fan variable area nozzle includes having a first fan nacelle section and a second fan nacelle section movably mounted relative the first fan nacelle section. The second fan nacelle section axially slides aftward relative to the fixed first fan nacelle section to change the effective area of the fan nozzle exit area.
1. A method of designing a turbofan engine comprising: providing a fan section including a plurality of fan blades, the plurality of fan blades having a fixed stagger angle and a design angle of incidence; providing a low pressure turbine driving the plurality of fan blades through a gear train, the low pressure turbine having a pressure ratio greater than 5:1, and the gear train having a gear reduction ratio of greater than 2.5:1; providing a fan nacelle and a core nacelle, the fan nacelle at least partially surrounding the core nacelle; providing a fan...