| 发明名称 | Variable bypass turbofan engine | ||
| 摘要 | A variable bypass turbofan engine includes a bypass fan having a plurality of bypass fan blades mated to a first low pressure shaft segment. A second low pressure shaft segment includes a low pressure compressor and a low pressure turbine mated thereto. The engine also includes a clutch coupled between the first low pressure shaft segment and the second low pressure shaft segment and is configured to selectively couple and decouple the first low pressure shaft segment from the second low pressure shaft segment. A brake is configured to selectively halt or oppose rotation of the first low pressure shaft segment or the bypass fan. | ||
| 申请公布号 | US9605557(B1) | 申请公布日期 | 2017.03.28 |
| 申请号 | US201414231947 | 申请日期 | 2014.04.01 |
| 申请人 | United States of America as represented by the Secretary of the Air Force | 发明人 | Rolling August J |
| 分类号 | F01D17/00;F02K3/02;F02C7/36;B64C11/32 | 主分类号 | F01D17/00 |
| 代理机构 | AFMCLO/JAZ | 代理人 | AFMCLO/JAZ ;Sopko Jason |
| 主权项 | 1. A variable bypass turbofan engine, the engine comprising: a bypass fan having a plurality of bypass fan blades mated to a first low pressure shaft segment; a second low pressure shaft segment including a low pressure compressor and a low pressure turbine mated thereto; a clutch coupled between the first low pressure shaft segment and the second low pressure shaft segment and configured to selectively couple and decouple the first low pressure shaft segment from the second low pressure shaft segment; and a brake configured to selectively halt or oppose rotation of the first low pressure shaft segment or the bypass fan; wherein the brake is disposed proximate an outer circumference of the bypass fan. | ||
| 地址 | Washington DC US | ||