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특허 상세정보

Rotor for rotary wing aircraft

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64C-027/52   
미국특허분류(USC) 244/017.25
출원번호 US-0004498 (1998-01-08)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Felsman Bradley Vaden Gunter & Dillon, LLPBradley
인용정보 피인용 횟수 : 31  인용 특허 : 37
초록

A rotor for rotary wing aircraft has a tip to tip flex-beam spar and torsionally stiff hollow blades bonded to the spar throughout the tip-most portion of the blades. The spar spaced-apart spar caps which have a dual beam cross section in the region not bonded to the blades so that the spar is twistable for pitch control. The rotor spindle and controls pass through a central hole between the spar caps. An intermediate section of the rotor has shear webs bonded above and below spaced-apart spar caps, providing a stiff box beam cross section. The spar caps...

대표
청구항

[ I claim:] [1.] A flex-beam rotor for rotary wing aircraft, having an inner portion outboard of the rotor axis of rotation, and intermediate and outer portions outboard of the inner portion, the rotor comprising:two spar caps extending continuously from tip to tip, the spar caps being separated at the rotor axis of rotation and throughout the intermediate portion of the rotor and joined to each other throughout the outer portion of the rotor; anda blade on each side of the rotor axis of rotation, each of the blades being mounted to and enclosing the spa...

이 특허에 인용된 특허 (37)

  1. Schmitz Fredric H. (Palo Alto CA) Boxwell Donald A. (San Jose CA) Vause C. Rande (Campbell CA). Acoustically swept rotor. USP1979094168939.
  2. Miller Gordon G. (Shelton CT). Aerodynamic flexible fairing. USP1986044580944.
  3. Garfinkle Marvin (P.O. Box 15855 Philadelphia PA 19103). Aerodynamically-stable airfoil spar. USP1993125269657.
  4. Ogle Peter C. (Woodbridge CT) Hibyan Edward S. (Trumbull CT). Anvil-strap rotor. USP1984074462755.
  5. Hill Paul W. (Cumberland MD). Bifoil blade. USP1982074339230.
  6. Toulmay Francois V. (Vitrolles FRX) Falchero Danile A. (Ventabren FRX). Blade for aircraft rotary wings, with swept-back tip. USP1994075332362.
  7. Vuillet Alain E. (Bouc Belair FRX) Philippe Jean J. (Versailles FRX) Desopper Andr (Garches FRX). Blade with curved end for a rotary airfoil of an aircraft. USP1989114880355.
  8. Cycon James P. (Milford CT) Krauss Timothy A. (Horwinton CT) Roman Stephan (Shelton CT). Composite flexbeam joint. USP1984084466774.
  9. Noehren William Lawrence (Huntington CT) Hibyan Edward Stanley (Trumbull CT). Composite helicopter spar and means to alleviate stress concentration. USP1977024008980.
  10. Zincone Robert (Norwalk CT). Composite tip weight attachment. USP1976123999888.
  11. Ferris ; Donald Leroy. Cross beam rotor. USP1978054087203.
  12. Ferris Donald L. (Newtown CT) Krauss Timothy A. (Sandy Hook CT). Cross beam rotor. USP198108RE30713.
  13. Ferris Donald L. (Newtown CT) Ogle Peter C. (Woodbridge CT). Cross beam rotor. USP1981114299538.
  14. Noehren William L. (Huntington CT) Ferris Donald L. (Newtown CT) Ogle Peter C. (Woodbridge CT). Cross-beam helicopter rotor with readily replaceable snubber. USP1981014244677.
  15. Beno Edward A. (Stratford CT) Noehren William L. (Trumbull CT). External wrap of composite flexbeam. USP1990024898515.
  16. Byrnes Francis E. (White Plains NY) D\Anna Frank P. (Seymour CT). Flexbeam helicopter rotor with improved snubber-vibration damper between the torque tube and the flexible spar member. USP1992035092738.
  17. Olsen Eric G. (Woodbury CT) Campbell Thomas G. (Cheshire CT). Helicopter rotor flexbeam. USP1988124792280.
  18. Crannage Mark A. (Somerton GB2) Hansford Robert E. (Yeovil GB2) Perry Frederick J. (Yeovil GB2). Helicopter rotors. USP1992035100294.
  19. Head, Robert E.; Banerjee, Debashis. Helicopter tail rotor of the elastomerically-mounted composite flexbeam type. USP1983054381902.
  20. Buchs Wolfgang (Valley DEX) Nowak Franz (Taufkirchen DEX) Woerndle Rudolf (Brunnthal DEX). Hingeless rotor, especially for a helicopter. USP1982104352631.
  21. Yamamoto Keizou (Tokorozawa JPX) Ichihashi Takahiro (Tachikawa JPX) Hanayama Kanehiro (Tachikawa JPX) Bandoh Shunichi (Kakamigahara JPX) Kakinuma Asao (Kakamigahara JPX) Wakatsuki Tadashi (Seki JPX). Hub structure for a rotary wing aircraft. USP1993075228834.
  22. Frengley Michael C. (Chandler AZ) Vu Thu N. (Tempe AZ). Leading edge weight retention assembly for a helicopter rotor. USP1995105462409.
  23. Cheney ; Jr. Marvin C. (Glastonbury CT). Matched stiffness rotor flexbeam and blade system. USP1982064332525.
  24. Duret Maurice L. (Aix-en-Provence FRX) Lamarche Bernard L. J. (Velaux FRX) Declercq Marc A. (Pelissanne FRX) Martin Robert D. (Aix-en-Provence FRX). Multi-blade propellers. USP1981084281966.
  25. Yen Jing G. (Arlington TX) Popelka David A. (Bedford TX). Nodalized rotor. USP1986074601639.
  26. Schmaling David N. (Oxford CT) Byrnes Francis E. (White Plains NY). Pitch adjustment assembly for bearingless main rotors. USP1995105460487.
  27. Carlson Charles E. K. (North Shallott NC) Violette John A. (Granby CT). Reinforced full-spar composite rotor blade. USP1992075127802.
  28. Belko Raymond P. (Blackwood NJ) Huss Robert C. (Glen Mills PA). Rotor blade tipweight assembly. USP1979044150920.
  29. Hahn Michael (Ottobrunn DEX) Friedberger Otmar (Neubiberg DEX) Singer Gerhard (Munich DEX). Rotor blade, especially for a rotary wing aircraft. USP1986064592701.
  30. Schwarz Alois (Putzbrunn DEX) Mautz Karl-Heinz (Ottobrun DEX) Stephan Michael (Munich DEX). Rotor structure for a rotary wing aircraft. USP1982084345876.
  31. Hahn Michael (Ottobrunn DEX) Kuntze-Fechner Gerald (Bad Wiessee DEX). Rotor structure, especially for a rotary wing aircraft. USP1988104778343.
  32. Byrnes Francis E. (White Plains NY). Snubber-bearing with combined elastomer laminates. USP1993025188513.
  33. Aubry Jacques A. (Cabries FRX). Supple mounting arrangement for helicopter rotor with through strip. USP1981104293277.
  34. Sato Tetsuro (Tokyo JPX). System for damping lead-lag motion of rotor blades of helicopter. USP1990014893988.
  35. Mouille Rene L. (Aix-en-Provence FRX). Variable-pitch rotor, specially for a rotary-wing aircraft. USP1980094222709.
  36. Carter ; Jr. J. Warne (Burkburnett TX) Carter ; Sr. J. Warne (Wichita Falls TX). Wind-driven generator apparatus. USP1985064522561.
  37. Carter ; Jr. J. Warne (Burkburnett TX) Carter ; Sr. J. Warne (Wichita Falls TX). Wind-driven generator apparatus. USP1985064522564.

이 특허를 인용한 특허 피인용횟수: 31

  1. Thomas, James P.; O'Brien, Michael J.; Pogue, III, William R.. Active twist hollow beam system. USP2014058721282.
  2. Thomas, James P; O'Brien, Michael J; Pogue, III, William R. Active twist hollow beam system. USP2012088246303.
  3. Zamponi, Laurent; Fontaine, Nicolas; Durand, Valerian; Hirsch, Jean-Francois; Grohmann, Boris. Adaptively-twistable blade, and an aircraft including such a blade. USP2017109802699.
  4. Carter, Jr.,Jay W.. Aircraft with rotor vibration isolation. USP2009027490792.
  5. Zientek, Thomas A.; Birchette, Terrence S.; Straub, Friedrich K.. Apparatus, system, and method for pitching and twisting a blade of a rotorcraft. USP2016119487291.
  6. Carter, Jr., Jay W.; Lewis, Jeffrey R.. Automatic mechanical control of rotor blade collective pitch. USP2010037677492.
  7. Gupta, Neil; Karem, Abe. Composite blade root structure. USP2011077972114.
  8. Kismarton,Max U.. Composite landing gear apparatus and methods. USP2008127467763.
  9. Kismarton, Max U.. Composite skin and stringer structure and method for forming the same. USP2013058444087.
  10. Kismarton, Max U.. Composite structural members and methods for forming the same. USP2010057721495.
  11. Meyer, Leon M.; Lay, Richard C.; Schmaling, David N.. Elastomeric bearing system motion limiter. USP2018029884680.
  12. Carter,Jay W.. Extreme mu rotor. USP2006016986642.
  13. Cilli, Gianni. Helicopter with counter-rotating coaxial rotors without cyclic variation of pitch, equipped with means for aerodynamic control of attitude and flight path. USP2013108556207.
  14. Jay W. Carter, Jr.. High speed rotor aircraft. USP2002086435453.
  15. Carter, Jr., Jay W.. Hovering gyro aircraft. USP2003026513752.
  16. Kismarton, Max U.. Hybrid fiberglass composite structures and methods of forming the same. USP2010067740932.
  17. Jay W. Carter, Jr.. Landing gear shock absorber with variable viscosity fluid. USP2002116474598.
  18. Leahy, Kevin P.; Simkulak, Richard Joseph; Kovalsky, David A.. Main rotor blade with integral cuff. USP2013018353673.
  19. Kismarton, Max U.. Method for manufacturing composite components. USP2010077748119.
  20. Groen, David L.. Mission-adaptive rotor blade. USP2017039604722.
  21. Groen, David L.. Mission-adaptive rotor blade. USP2015028944365.
  22. Dennison, William D.; May, Carl A.. Removable horizontal stabilizer for helicopter. USP2014118882031.
  23. Dennison, William D.; May, Carl A.. Removable horizontal stabilizer for helicopter. USP2013128602351.
  24. Carter, Jr.,Jay W.; Robinson,M. Keith; Mitchell,George D.. Rotor aircraft tilting hub with reduced drag rotor head and mast. USP2009037510377.
  25. Carter, Jr.,Jay W.; Lewis,Jeffrey R.. Rotor collective pitch VS Mu to control flapping and mast/rotor tilt to control rotor RPM. USP2008117448571.
  26. Carter, Jr., Jay W.. Rotor for rotary wing aircraft. USP2003036527515.
  27. Hunter, David H.; Casey, Ryan T.; Byrnes, Francis E.. Rotor with blades including outer blade shell and inner structural member. USP2015109169011.
  28. Oldroyd, Paul K.; Sutton, Drew; Maresh, Andrew; Foskey, Christopher. Rotorcraft rotor blade assembly. USP20181210145244.
  29. Woodard, Patrick; Kismarton, Max; Andrews, Francis E.. Split resistant composite laminate. USP2018019878773.
  30. Carter, Jr., Jay W.. Variable pitch aircraft propeller control with two-speed transmission. USP2003026524068.
  31. Ferguson, Stanley D.; Fialho, Ian J.; Potter, Richard C.. Wing aerial refueling system. USP2017019533754.

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