$\require{mediawiki-texvc}$
  • 검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
  • 검색연산자
검색연산자 기능 검색시 예
() 우선순위가 가장 높은 연산자 예1) (나노 (기계 | machine))
공백 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 예1) (나노 기계)
예2) 나노 장영실
| 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 예1) (줄기세포 | 면역)
예2) 줄기세포 | 장영실
! NOT 이후에 있는 검색어가 포함된 문서는 제외 예1) (황금 !백금)
예2) !image
* 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 예) semi*
"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"

특허 상세정보

Helicopter with leading edge servo flaps for pitch positioning its rotor blades

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-027/615   
미국특허분류(USC) 244/1713 ; 416/24
출원번호 US-0103892 (1993-08-06)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 19  인용 특허 : 0
초록

In a helicopter having a main rotor with blades controlled in pitch by servo flaps the servo flaps are arranged in advance of the leading edges of the blade to provide increased lift efficiency of the rotor system. The signals for controlling the pitches of the blade are generated by a computer implemented means responsive to pilot command signals and flight parameter signals and are transmitted from the stationary structure of the helicopter to the rotating structure through a non-mechanical stationary-to-rotary interface. An active stabilization system...

대표
청구항

In a helicopter, the combination comprising: a helicopter body, a rotor rotatable in one direction relative to said helicopter body about a generally vertical rotor axis, said rotor including a hub and a plurality of elongated blades connected with said hub, each of said blades extending generally radially outwardly from said hub and being movable relative to said hub about a blade pitch axis extending along its length, each of said blades having a leading edge and a trailing edge with respect to rotation of said rotor in said one direction, a leading ed...

이 특허를 인용한 특허 피인용횟수: 19

  1. Torok, Michael S.; Moffitt, Robert C.; Lorber, Peter F.; Davis, Geoffrey C. R.; Bernhard, Andreas P. F.; Welsh, William Arthur; Wake, Brian E.. Active control of multi-element rotor blade airfoils. USP2004086769872.
  2. Kohlhepp Fred W.. Actuation system for an active rotor control system. USP2001036200096.
  3. Thomas Lorkowski DE; Frank Hermle DE; Peter Jaenker DE. Aerodynamic component with a leading edge flap. USP2002046371415.
  4. Perlman, David L.. Enhanced performance rotorcraft rotor blade. USP2016099446843.
  5. Pancotti, Santino. Helicopter rotor hub, and rotor featuring such a hub. USP2005066910865.
  6. Jermyn Phillip Matthew,GBX ; Davis Steven Martin. Helicopter with a gyroscopic rotor and rotor propellers to provide vectored thrust. USP1999105971320.
  7. Lozyniak Steven A. ; Lorber Peter Frederick ; Kohlhepp Fred W. ; Hoffman Lee A. ; Morton Robert ; Ferraro Richard B.. High torque actuation system for an active rotor control system. USP2001036196796.
  8. Jänker, Peter; Klöppel, Valentin. Method and device for controlling a rotary wing aircraft. USP2013078475127.
  9. Hein, Benjamin Reed. Multi-element rotor blade. USP2015129211950.
  10. Antonios N. Kotoulas ; Charles Berezin ; Michael S. Torok ; Peter F. Lorber. Neural net controller for noise and vibration reduction. USP2002126493689.
  11. Kotoulas, Antonios N.; Berezin, Charles; Torok, Michael S.; Lorber, Peter F.. Neural net controller for noise and vibration reduction. USP2004066751602.
  12. William Edward Vanderbeck ; Gregory Weston Terpay ; Ka-Shu Lee ; George Gustave Zipfel ; Victor G. Mishkevich ; Thomas Edward Smith, Jr.. Permanent magnet phase-control motor. USP2002116476534.
  13. Toulmay, Fran.cedilla.ois. Rotary wing aircraft with electric pitch control. USP2003036530542.
  14. Buter Andreas,DEX ; Piening Matthias,DEX. Rotor blade. USP1998035730581.
  15. Yamakawa Eiichi,JPX ; Hongu Tatsuro,JPX. Rotor blade flap driving apparatus. USP2001086273681.
  16. Bagai,Ashish. Rotor blade pitch control assembly. USP2006016984109.
  17. Bauer, Markus; Denecke, Ulrich; Kuntze-Fechner, Gerald; Mueller, Christine; Sahlstorfer, Hermann; Wagner, Alois. Rotor blade with flap and flap drive. USP2003116644919.
  18. Peter Janker DE. Tilt and swivel positioning device. USP2002116474184.
  19. McDonnell,William R.. Use of aerodynamic forces to assist in the control and positioning of aircraft control surfaces and variable geometry systems. USP2008097424988.