$\require{mediawiki-texvc}$
  • 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 low-speed yaw control

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-027/00   
미국특허분류(USC) 244/1719 ; 244/1711 ; 244/75R
출원번호 US-0788908 (1991-11-07)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 44  인용 특허 : 0
초록

A system for improving yaw control at low speeds consists of one strake placed on the upper portion of the fuselage facing the retreating rotor blade and another strake placed on the lower portion of the fuselage facing the advancing rotor blade. These strakes spoil the airflow on the helicopter tail boom during hover, low speed flight and right or left sidewards flight so that less side thrust is required from the tail rotor.

대표
청구항

A helicopter yaw control system comprising: a helicopter; said helicopter having a main rotor attached thereto; said helicopter having a fuselage extending rearward through rotor downwash; helicopter yaw control means consisting of a combination of exactly two strake devices arranged asymmetrically about the fuselage, the combination including an upper strake being located above a lower strake, the upper strake being located along the side of the fuselage which faces the retreating rotor blade and the lower strake being located along the side of the fuse...

이 특허를 인용한 특허 피인용횟수: 44

  1. Speakes Dale M.. Accessory mounting assembly. USP1999025871172.
  2. D'Alascio, Alessandro; Mores, Sebastian; Le Chuiton, Frederic; Bebesel, Marius; Zhang, Qinyin. Aerodynamic, blunt aft body. USP2016019242713.
  3. Lhermenault, Rodolphe; Meyer, Thomas; Azeau, Jean; Guitton, Julien. Aircraft provided with a tail plane including means for combating flutter. USP2014088814083.
  4. Desroche, Robert J.. Aircraft stabilization systems and methods of modifying an aircraft with the same. USP2015038985503.
  5. Desroche, Robert J.. Aircraft stabilization systems and methods of modifying an aircraft with the same. USP2015038991747.
  6. Desroche, Robert J.. Aircraft stabilizer system and methods of using the same. USP2012078210468.
  7. Desroche, Robert J.. Aircraft stabilizer system and methods of using the same. USP2013028376265.
  8. Brand, Albert G.; Narramore, Jimmy; Harse, James H.; Lanigan, Brendan P.. Airfoil shaped tail boom. USP2014098840058.
  9. Brand, Albert G.; Narramore, Jimmy; Harse, James H.; Lanigan, Brendan P.. Airfoil shaped tail boom. USP2014088814078.
  10. Carson, Franklin D.. Anti-Torque and yaw-control system for a rotary-wing aircraft. USP2004066755374.
  11. Franklin D. Carson. Anti-torque and yaw-control system for a rotary-wing aircraft. USP2002076416015.
  12. Renshaw Kevin J.. Apparatus and method for measuring the side slip of a low observable aircraft. USP1998125852237.
  13. Jeong, Woo Young. Helicopter. USP201805D817253.
  14. Mitchell, Jerry Odean; Eschete, Lynn Francis. Helicopter. USP201308D687364.
  15. Shiraishi,Takayuki; Kuramochi,Kenji; Tsuura,Seiichi. Helicopter having a fusilage section and a tail section coupled thereto. USP2007107278606.
  16. Christoph, Kessler. Helicopter having collision avoidance apparatus. USP2013068473189.
  17. Mikulla, Volker. Helicopter having means for the aerodynamic support of the torque equalization. USP2011128074920.
  18. Daniel W. Banks ; Henry L. Kelley. Helicopter tail boom with venting for alleviation and control of tail boom aerodynamic loads and method thereof. USP2002036352220.
  19. Botich, Leon. Helicopter torque counteraction device. USP2013048430353.
  20. Botich, Leon A.. Helicopter torque counteraction device. USP2014088794565.
  21. van der Westhuizen, Jacob Johannes. Hub-mounted auxilliary systems for tipjets in a reaction drive rotor system. USP2015109169009.
  22. Sonneborn, Walter Gerd Oskar. Low speed autogyro yaw control apparatus and method. USP2016039278754.
  23. Sonneborn, Walter Gerd Oskar. Low speed autogyro yaw control apparatus and method. USP2014068752786.
  24. Sonneborn, Walter Gerd Oskar. Pre-landing, rotor-spin-up apparatus and method. USP2015048998127.
  25. Dennison, William D.; May, Carl A.. Removable horizontal stabilizer for helicopter. USP2014118882031.
  26. Dennison, William D.; May, Carl A.. Removable horizontal stabilizer for helicopter. USP2013128602351.
  27. White, Robert Owen. Rotor blade subsystems attachment. USP2015099139297.
  28. van der Westhuizen, Jacob Johannes. Rotor configuration for reaction drive rotor system. USP2015059038940.
  29. van der Westhuizen, Jacob Johannes. Rotor driven auxiliary power apparatus and method. USP2015028950700.
  30. Khan, Jehan Zeb. Rotor-mast-tilting apparatus and method for lower flapping loads. USP2017049611036.
  31. Khan, Jehan Zeb. Rotor-mast-tilting apparatus and method for lower flapping loads. USP2015038991745.
  32. Khan, Jehan Zeb. Rotor-mast-tilting apparatus and method for optimized crossing of natural frequencies. USP2015038991744.
  33. McCollough, James M.; Wood, Tommie L.. Rotorcraft anti-torque rotor and rudder system. USP2014118882024.
  34. van der Westhuizen, Jacob Johannes. Rotorcraft empennage mounting system. USP2015028944366.
  35. van der Westhuizen, Jacob J.. Rotorcraft, dynamic, CG management apparatus and method. USP2015129205913.
  36. Hoover, Sarah; Zahasky, Andrew; Loveland, Steve; Decker, George Ryan; Amante, William A.. Short light single helicopter. USP201506D730803.
  37. van der Westhuizen, Jacob Johannes. Solid lubricated blade pitch control system for use within a compressed airstream of a reaction driven rotorcraft. USP2015038991748.
  38. 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.
  39. Yarger, Cody Brandon. Tail fan apparatus and method for low speed yaw control of a rotorcraft. USP2015018939395.
  40. Yarger, Cody Brandon. Tail jet apparatus and method for low speed yaw control of a rotorcraft. USP2015018931731.
  41. Botich, Leon. Torque counter-action device. USP2012078231077.
  42. Corliss, McGregor Lee. Two-place, collective pitch and throttle control. USP2014098844880.
  43. Groen, David L.. Use of auxiliary rudders for yaw control at low speed. USP2017049611037.
  44. Groen, David L.. Use of auxiliary rudders for yaw control at low speed. USP2015028960594.