IL53729A - Helicopter cross beam rotor with means to provide blade lead-lag and pitch decoupling - Google Patents
Helicopter cross beam rotor with means to provide blade lead-lag and pitch decouplingInfo
- Publication number
- IL53729A IL53729A IL53729A IL5372978A IL53729A IL 53729 A IL53729 A IL 53729A IL 53729 A IL53729 A IL 53729A IL 5372978 A IL5372978 A IL 5372978A IL 53729 A IL53729 A IL 53729A
- Authority
- IL
- Israel
- Prior art keywords
- lag
- cross beam
- provide blade
- blade lead
- beam rotor
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
- B64C27/35—Rotors having elastomeric joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
- B64C27/33—Rotors having flexing arms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Toys (AREA)
- Wind Motors (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/757,168 US4087203A (en) | 1977-01-07 | 1977-01-07 | Cross beam rotor |
Publications (1)
Publication Number | Publication Date |
---|---|
IL53729A true IL53729A (en) | 1981-01-30 |
Family
ID=25046666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL53729A IL53729A (en) | 1977-01-07 | 1978-01-02 | Helicopter cross beam rotor with means to provide blade lead-lag and pitch decoupling |
Country Status (10)
Country | Link |
---|---|
US (1) | US4087203A (xx) |
JP (1) | JPS5389200A (xx) |
AU (1) | AU510981B2 (xx) |
BE (1) | BE862604A (xx) |
CA (1) | CA1074760A (xx) |
DE (1) | DE2800075A1 (xx) |
FR (1) | FR2376791A1 (xx) |
GB (1) | GB1582411A (xx) |
IL (1) | IL53729A (xx) |
IT (1) | IT1091953B (xx) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2397326A2 (fr) * | 1977-07-13 | 1979-02-09 | Aerospatiale | Rotor sans articulations, en particulier pour un giravion |
FR2397325A1 (fr) * | 1977-07-13 | 1979-02-09 | Aerospatiale | Moyeu de rotor, en particulier pour le rotor principal d'un helicoptere |
FR2397327A1 (fr) * | 1977-07-13 | 1979-02-09 | Aerospatiale | Rotor a pas variable, en particulier pour un giravion |
FR2430354A1 (fr) * | 1978-07-07 | 1980-02-01 | Aerospatiale | Helice multipale a pas variable d'un type simplifie |
US4244677A (en) * | 1978-07-12 | 1981-01-13 | United Technologies Corporation | Cross-beam helicopter rotor with readily replaceable snubber |
JPS5567105U (xx) * | 1978-10-28 | 1980-05-09 | ||
US4299538A (en) * | 1978-12-06 | 1981-11-10 | United Technologies Corporation | Cross beam rotor |
DE2903524C2 (de) * | 1979-01-31 | 1982-02-25 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Schlag- und schwenkgelenkloser Anschluß von Rotorblättern eines Drehflügelflugzeuges |
US4366387A (en) * | 1979-05-10 | 1982-12-28 | Carter Wind Power | Wind-driven generator apparatus and method of making blade supports _therefor |
USRE30713E (en) * | 1979-08-01 | 1981-08-18 | United Technologies Corp. | Cross beam rotor |
US4332525A (en) * | 1979-12-03 | 1982-06-01 | United Technologies Corporation | Matched stiffness rotor flexbeam and blade system |
US4588355A (en) * | 1984-08-23 | 1986-05-13 | United Technologies Corporation | Flexible swashplate centering member |
US4695227A (en) * | 1985-02-27 | 1987-09-22 | Hughes Helicopters Inc. | All composite, constant speed universal joint for use in a shaft driven tiltable main rotor for a helicopter |
DE3633346C1 (de) * | 1986-10-01 | 1987-11-05 | Messerschmitt Boelkow Blohm | Rotor,insbesondere eines Drehfluegelfluegzeuges |
JP2667176B2 (ja) * | 1987-11-10 | 1997-10-27 | 富士重工業株式会社 | ヘリコプタのピッチ変更及びリードラグ減衰装置 |
DE3824816A1 (de) * | 1988-07-21 | 1990-01-25 | Messerschmitt Boelkow Blohm | Federelement zur drehwinkelbeweglichen verbindung zweiter bauteile |
DE3824815A1 (de) * | 1988-07-21 | 1990-01-25 | Messerschmitt Boelkow Blohm | Rotor, insbesondere eines drehfluegelflugzeugs, abstuetzung einer blattsteuerhuelle |
GB8922338D0 (en) * | 1989-10-04 | 1989-11-22 | Westland Helicopters | Helicopter rotors |
US5092738A (en) * | 1990-04-06 | 1992-03-03 | United Technologies Corporation | Flexbeam helicopter rotor with improved snubber-vibration damper between the torque tube and the flexible spar member |
DE69115565T2 (de) * | 1990-05-30 | 1996-05-02 | United Technologies Corp | Verbesserte Nabengelenksverbindung für einen Helikopterrotor mit elastischen Blättern |
US6024325A (en) * | 1997-01-09 | 2000-02-15 | Cartercopters, Llc | Rotor for rotary wing aircraft |
US6827553B2 (en) | 2003-01-15 | 2004-12-07 | Lord Corporation | Flexbeam damper assembly having transition shim clamp device |
US20100014973A1 (en) * | 2008-07-19 | 2010-01-21 | Carlos Manuel Perez Romo | Vertical Axis Fluid Flow Turbine System |
EP2367719B1 (en) | 2008-12-11 | 2018-09-12 | Sikorsky Aircraft Corporation | Tail rotor blade assembly and elastomeric bearing system motion limiter |
US9169011B2 (en) * | 2011-09-13 | 2015-10-27 | Sikorsky Aircraft Corporation | Rotor with blades including outer blade shell and inner structural member |
US9452830B2 (en) * | 2014-01-13 | 2016-09-27 | Sikorsky Aircraft Corporation | Constant velocity drive for tilt rotor assembly |
WO2017079014A1 (en) * | 2015-11-02 | 2017-05-11 | Sikorsky Aircraft Corporation | Rotor blade snubber retainer for a rotary wing aircraft |
US10858096B1 (en) * | 2019-05-29 | 2020-12-08 | Lockheed Martin Corporation | Folding horn concept for rigid rotor blade fold |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2949967A (en) * | 1959-05-25 | 1960-08-23 | Hughes Tool Co | Blade-to-hub connector for thrust producing rotor |
GB1205757A (en) * | 1967-02-07 | 1970-09-16 | Westland Aircraft Ltd | Improvements in or relating to rotor heads for rotary wing aircraft |
US3501250A (en) * | 1968-03-22 | 1970-03-17 | Boeing Co | Rotor hub |
US3484174A (en) * | 1968-04-08 | 1969-12-16 | Kaman Corp | Rotary wing system |
FR2041747A1 (xx) * | 1969-05-20 | 1971-02-05 | Sud Aviation | |
US3926536A (en) * | 1970-10-15 | 1975-12-16 | Westland Aircraft Ltd | Semi-rigid rotor systems for rotary wing aircraft |
US3880551A (en) * | 1973-11-15 | 1975-04-29 | Boeing Co | Rotary head assembly for rotary wing aircraft |
US3874815A (en) * | 1973-11-15 | 1975-04-01 | Boeing Co | Rotary head assembly for rotary wing aircraft |
US3874820A (en) * | 1974-04-08 | 1975-04-01 | United Aircraft Corp | Hingeless in-plane rotor blade design |
US3999886A (en) * | 1974-10-10 | 1976-12-28 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Hingeless helicopter rotor with improved stability |
US4008980A (en) * | 1975-06-26 | 1977-02-22 | United Technologies Corporation | Composite helicopter spar and means to alleviate stress concentration |
-
1977
- 1977-01-07 US US05/757,168 patent/US4087203A/en not_active Expired - Lifetime
- 1977-12-12 CA CA292,858A patent/CA1074760A/en not_active Expired
-
1978
- 1978-01-02 IL IL53729A patent/IL53729A/xx unknown
- 1978-01-02 DE DE19782800075 patent/DE2800075A1/de not_active Withdrawn
- 1978-01-03 BE BE184081A patent/BE862604A/xx not_active IP Right Cessation
- 1978-01-03 GB GB77/78A patent/GB1582411A/en not_active Expired
- 1978-01-04 AU AU32158/78A patent/AU510981B2/en not_active Expired
- 1978-01-05 JP JP35378A patent/JPS5389200A/ja active Pending
- 1978-01-06 IT IT19052/78A patent/IT1091953B/it active
- 1978-01-06 FR FR7800269A patent/FR2376791A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
AU3215878A (en) | 1979-07-12 |
IT1091953B (it) | 1985-07-06 |
BE862604A (fr) | 1978-05-02 |
CA1074760A (en) | 1980-04-01 |
JPS5389200A (en) | 1978-08-05 |
AU510981B2 (en) | 1980-07-24 |
IT7819052A0 (it) | 1978-01-06 |
DE2800075A1 (de) | 1978-07-13 |
US4087203A (en) | 1978-05-02 |
GB1582411A (en) | 1981-01-07 |
FR2376791A1 (fr) | 1978-08-04 |
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