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특허 상세정보

Helicopter anti-torque system using fuselage strakes

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-005/06    B64C-027/06   
미국특허분류(USC) 244/1719 ; 244/91
출원번호 US-0008895 (1987-01-30)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 22  인용 특허 : 2
초록

A helicopter 10 with a system for controlling mainrotor torque which reduces the power and size requirements of conventional anti-torque means. The torque countering forces are generated by disrupting the main rotor downwash flowing around the fuselage. The downward flow is separated from the fuselage surface 11 by strakes 16 and 17 positioned at specified locations on the fuselage 11. These locations are determined by the particular helicopter wash pattern and fuselage configuration, generally being located 30°before top dead center 21 and 30°from botto...

대표
청구항

A helicopter torque control system comprising: a helicopter; said helicopter having a main rotor attached thereto; said helicopter having a fuselage extending rearward through rotor downwash; helicopter torque control means consisting of a combination of two strake devices, the upper strake being located above the lower strake and both strake devices located only along the side of said fuselage which faces the approaching main rotor blade, for altering rotor downwash, thereby altering lateral aerodynamic force of the fuselage so as to counter main rotor ...

이 특허를 인용한 특허 피인용횟수: 22

  1. Lhermenault, Rodolphe; Meyer, Thomas; Azeau, Jean; Guitton, Julien. Aircraft provided with a tail plane including means for combating flutter. USP2014088814083.
  2. Desroche, Robert J.. Aircraft stabilization systems and methods of modifying an aircraft with the same. USP2015038985503.
  3. Desroche, Robert J.. Aircraft stabilization systems and methods of modifying an aircraft with the same. USP2015038991747.
  4. Desroche, Robert J.. Aircraft stabilizer system and methods of using the same. USP2012078210468.
  5. Desroche, Robert J.. Aircraft stabilizer system and methods of using the same. USP2013028376265.
  6. Brand, Albert G.; Narramore, Jimmy; Harse, James H.; Lanigan, Brendan P.. Airfoil shaped tail boom. USP2014098840058.
  7. Carson, Franklin D.. Anti-Torque and yaw-control system for a rotary-wing aircraft. USP2004066755374.
  8. Franklin D. Carson. Anti-torque and yaw-control system for a rotary-wing aircraft. USP2002076416015.
  9. Yamakawa Eiichi,JPX ; Kondo Natsuki,JPX. Compensation apparatus for main rotor torque. USP2000046053452.
  10. Shiraishi,Takayuki; Kuramochi,Kenji; Tsuura,Seiichi. Helicopter having a fusilage section and a tail section coupled thereto. USP2007107278606.
  11. Mikulla, Volker. Helicopter having means for the aerodynamic support of the torque equalization. USP2011128074920.
  12. Daniel W. Banks ; Henry L. Kelley. Helicopter tail boom with venting for alleviation and control of tail boom aerodynamic loads and method thereof. USP2002036352220.
  13. Botich, Leon. Helicopter torque counteraction device. USP2013048430353.
  14. Botich, Leon A.. Helicopter torque counteraction device. USP2014088794565.
  15. Raffel, Markus; Richter, Kai; Gardner, Anthony. Helicopter with oblique tail boom. USP2014088807476.
  16. Saiz, Manuel Munoz. Lifting arrangement for aircraft fuselages. USP2005106957792.
  17. Sonneborn, Walter Gerd Oskar. Low speed autogyro yaw control apparatus and method. USP2016039278754.
  18. Sonneborn, Walter Gerd Oskar. Low speed autogyro yaw control apparatus and method. USP2014068752786.
  19. Pauly,Bernard. Method making it possible to prevent vibration of a rudder of an aircraft and aircraft using this method. USP2008037338011.
  20. McCollough, James M.; Wood, Tommie L.. Rotorcraft anti-torque rotor and rudder system. USP2014118882024.
  21. Wehle, Christian; Steger, Justus; Nothen, Marc; Probst, Stefan; Horstmann, Antonia. Tail assembly for a rotorcraft, rotorcraft and method of manufacture of a strengthened tail assembly. USP2018059963226.
  22. Botich, Leon. Torque counter-action device. USP2012078231077.