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Helicopter tail rotor of the elastomerically-mounted composite flexbeam type

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • B64C-027/38
출원번호 US-0105545 (1979-12-20)
발명자 / 주소
  • Head, Robert E.
  • Banerjee, Debashis
출원인 / 주소
  • Hughes Helicopters, Inc.
대리인 / 주소
    Beehler, Pavitt, Siegemund, Jagger & Martella
인용정보 피인용 횟수 : 23  인용 특허 : 10

초록

A fiberglass-epoxy flexbeam extends from tip to tip of each opposed blade pair, carrying the blade centrifugal forces so that none of the centrifugal loading is carried by the hub. The primary load-carrying connector between the flexbeam and the hub is a set of elastomeric pads. These provide a soft

대표청구항

1. In a helicopter rotor of the type in which a flexbeam interconnects blades on opposite sides of a hub and in which the flexbeam is attached to the hub, the improvement comprising: chordwise damping and coupling means interposed between the flexbeam and the hub for isolating the hub from bendin

이 특허에 인용된 특허 (10)

  1. Noehren William Lawrence (Huntington CT) Hibyan Edward Stanley (Trumbull CT), Composite helicopter spar and means to alleviate stress concentration.
  2. Rybicki ; Robert Charles, Cross beam rotor.
  3. Noehren William L. (Huntington CT) Ferris Donald L. (Newtown CT) Ogle Peter C. (Woodbridge CT), Cross-beam helicopter rotor with readily replaceable snubber.
  4. Scarpati ; Thomas S. ; Ford ; Robert J., Method of fabricating a composite aerodynamic rotorblade assembly.
  5. Dunahoo Edmond O. (Long Beach CA), Multi-chambered cellular structure and method for manufacture.
  6. McGuire Dennis P. (Erie PA), Propeller assembly.
  7. Mouille ; Rene Louis, Rotor arrangement for rotary wing aircraft.
  8. Mouille Rene Louis (Aix-en-Provence FR), Tail-rotor arrangement for rotor crafts.
  9. Ferris Donald Leroy (Newtown CT) Noehren William Lawrence (Huntington CT), Torque reacting means for the hubs of cross beam rotors.
  10. Mouille Rene L. (Aix-en-Provence FRX), Variable-pitch rotor, specially for a rotary-wing aircraft.

이 특허를 인용한 특허 (23)

  1. Head Robert E. (Palos Verdes Estates CA) Yao Samuel S. (Fountain Valley CA), All composite, constant speed universal joint for use in a shaft driven tiltable main rotor for a helicopter.
  2. Stamps, Frank B.; Tisdale, Patrick R.; Braswell, James L.; Baskin, Jr., Charles L.; Campbell, Tom; Ledbetter, Timothy K.; Zierer, Joseph J.; Reddy, D. J.; Wiinikka, Mark A.; Martin, Ronnie L.; Haynie, David A.; Sadler, Stanley Gene; Measom, Ron; Oldroyd, Paul; Hiros, Tricia; Harse, Jim; Mullins, Bob, Assembly for providing flexure to blade system.
  3. Bianchi, Laurent; Cuenca, Rémy; Galan, Mathieu; Reveillon, Damien, Blade with adaptive twisting, and a rotor provided with such a blade.
  4. Maresh, Andrew; Stamps, Frank Bradley; Tisdale, Patrick Ryan; Wardlaw, Robert Patrick; Haldeman, Andrew; Sutton, Drew Alan, Composite rotor system using two race track style cantilevered yokes.
  5. Meyer, Leon M.; Lay, Richard C.; Schmaling, David N., Elastomeric bearing system motion limiter.
  6. Beno Edward A. (Stratford CT) Noehren William L. (Trumbull CT), External wrap of composite flexbeam.
  7. Hibyan Edward S. (Trumbull CT) Wehnert George J. (Madison CT) Toner Thomas J. (Milford CT) Byrnes ; Jr. Francis E. (White Plains NY) Ogle Peter C. (Woodbridge CT), Fiber reinforced/epoxy matrix composite helicopter rotor torque tube.
  8. Yao Samuel S. (Fountain Valley CA) Hughes Charles W. (Thousand Oaks CA), Flat strap cruciform flexure for helicopter rotor systems.
  9. Parsons, Eric S.; Nussenblatt, Eric Lucien; Thomas, Justin; Casey, Ryan Thomas; Hunter, David H., Flexbeam rotor attachment to rotor blade.
  10. McArdle Francis H. (Norristown PA) Schneider Earl (Havertown PA) DeRosa Richard T. (Brookhaven PA), Helicopter rotor system and method.
  11. Baskin, Bryan Kenneth; Walker, Todd David, Low offset hingeless rotor with pitch change bearings.
  12. Becker,Gerold; Pfaller,Rupert, Rotor and gyrocopter with said rotor.
  13. Hahn Michael (Ottobrunn DEX) Friedberger Otmar (Neubiberg DEX) Singer Gerhard (Munich DEX), Rotor blade, especially for a rotary wing aircraft.
  14. Cardell, Per-Erik; Johansson, Tommy; Lindroth, Johan; Stenbom, Kjell, Rotor damper and tail rotor with such a rotor damper.
  15. Carter ; Jr. Jay W., Rotor for rotary wing aircraft.
  16. Carter ; Jr. Jay W., Rotor head for rotary wing aircraft.
  17. Hahn Michael (Ottobrunn DEX) Kuntze-Fechner Gerald (Bad Wiessee DEX), Rotor structure, especially for a rotary wing aircraft.
  18. Wagner Alois (Emmerkofen DEX) Friedberger Otmar (Neubiberg DEX), Rotor, in particular a helicopter rotor.
  19. Metzger Robert W. (Hurst TX) Neathery William D. (Fort Worth TX) Reyes Peter A. (Watauga TX) Tisdale Patrick R. (Bedford TX) Covington Cecil E. (Hurst TX) Broekhuizen Willem (Arlington TX), Soft inplane bearingless helicopter rotor.
  20. Sato Tetsuro (Tokyo JPX), System for damping lead-lag motion of rotor blades of helicopter.
  21. Ajay Sehgal ; Eric C. Boyle ; Glen A. Shimek, Tail rotor yoke assembly.
  22. Guy, Stuart, Test rig for testing blades for a wind turbine.
  23. Carter ; Sr. J.. Warne, Wind-driven electric generator apparatus of the downwind type with flexible changeable-pitch blades.
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