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특허 상세정보

Drag-reducing nacelle

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64D-029/02   
미국특허분류(USC) 244/53R ; 60/2261 ; 239/26519 ; 244/130
출원번호 US-0368242 (1982-04-14)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 16  인용 특허 : 1
초록

A wing-mounted gas turbofan engine is provided with an exhaust system that reduces airflow drag during subsonic aircraft flight operation. The system reduces drag by turning the engine bypass exhaust stream away from the underside of the airplane wing to lessen its tendency to reduce air pressure under the wing. Low pressure below the airplane wing has a detrimental effect on wing lift which, in turn, causes greater airflow drag. The exhaust system construction lessens its pressure lowering influence by first, inwardly curving the exhaust system exit to ...

대표
청구항

For a gas turbine engine effective for powering an aircraft, an exhaust system comprising: an annular, first flowpath member comprising a forward portion having an outer radius increasing from a forward end of said first flowpath member to an intermediate portion thereof having a maximum radius; said first flowpath member further including a conical aft portion comprising first and second axially adjacent conical aft portions having an outer radius decreasing from said intermediate portion along said first and second aft portions, respectively, to an aft...

이 특허를 인용한 특허 피인용횟수: 16

  1. Franklin, III, Walter M.; Morgenstern, John M.; Lee, Howard; Quayle, Brian; Hajic, Ken; Scarcello, John; Arslan, Alan E.. Aircraft tail configuration for sonic boom reduction. USP2004116824092.
  2. Crosta, Franck; Prat, Damien; Grossein, David. Aircraft turbofan engine. USP2015028959924.
  3. Yu, Zhehui; Zhang, Miao; Zhang, Meihong; Xue, Fei; Liu, Tiejun; Zhang, Dongyun; Wang, Junhong; Cheng, Pan; Lu, Yong; Liu, Xiaoyan. Airplane suspension cowling structure with wing-mounted arrangement. USP2018049950803.
  4. Patterson ; Jr. James C. (Newport News VA). Compression pylon. USP1989094867394.
  5. Dindar, Mustafa; Burton, Scott Andrew; Blodgett, Keith Edward James; Cedar, Richard David. Exhaust nozzle with non-coplanar and/or non-axisymmetric shape. USP2017119810178.
  6. Hanson, Russell B.. Fan variable area nozzle for a gas turbine engine fan nacelle. USP2010057721551.
  7. Obkircher,Bernt; Steinwandel,Juergen; Heller,Markus; Willneff,Rainer. Flying device for IR flying target representation. USP2006057048276.
  8. Alletzhauser, Eric W.. Gas turbine engine with fan variable area nozzle having a rotational valve system. USP2011067966827.
  9. Do, Logan H.; Krystowski, Edward A.. Gas turbine engine with variable area fan nozzle. USP2013108549834.
  10. Lahti Daniel J. (Cincinnati OH) Yates David E. (Cincinnati OH) Mungur Parmanand (West Chester OH) Stockman Norbert O. (Batavia OH). Hybrid laminar flow nacelle. USP1991024993663.
  11. Alecu, Daniel T.. Nacelle drag reduction device for a turbofan gas turbine engine. USP2009107604201.
  12. Gukeisen, Robert L.. Pylon shape with geared turbofan for structural stiffness. USP20190110179653.
  13. Winter, Michael; Hanson, Russell B.. Thrust vectorable fan variable area nozzle for a gas turbine engine fan nacelle. USP2009127637095.
  14. Winter, Michael; Hanson, Russell B.. Thrust vectorable fan variable area nozzle for a gas turbine engine fan nacelle. USP2014078769925.
  15. Winter, Michael; Harison, Russell B.. Thrust vectorable fan variable area nozzle for a gas turbine engine fan nacelle. USP2014088806850.
  16. Dindar, Mustafa; Burton, Scott Andrew; Blodgett, Keith Edward James; Cedar, Richard David. Variable slope exhaust nozzle. USP2015119181899.