DE3464572D1 - Retractible blocking device to limit the flapping of the blades of a rotorcraft's main rotor - Google Patents
Retractible blocking device to limit the flapping of the blades of a rotorcraft's main rotorInfo
- Publication number
- DE3464572D1 DE3464572D1 DE8484401752T DE3464572T DE3464572D1 DE 3464572 D1 DE3464572 D1 DE 3464572D1 DE 8484401752 T DE8484401752 T DE 8484401752T DE 3464572 T DE3464572 T DE 3464572T DE 3464572 D1 DE3464572 D1 DE 3464572D1
- Authority
- DE
- Germany
- Prior art keywords
- retractible
- rotorcraft
- flapping
- blades
- limit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
- B64C27/322—Blade travel limiting devices, e.g. droop stops
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Toys (AREA)
- Wind Motors (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8314311A FR2551723B1 (fr) | 1983-09-08 | 1983-09-08 | Dispositif a butees escamotables pour limiter les battements des pales d'un rotor principal de giravion |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3464572D1 true DE3464572D1 (en) | 1987-08-13 |
Family
ID=9292058
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8484401752T Expired DE3464572D1 (en) | 1983-09-08 | 1984-09-03 | Retractible blocking device to limit the flapping of the blades of a rotorcraft's main rotor |
Country Status (6)
Country | Link |
---|---|
US (1) | US4652210A (de) |
EP (1) | EP0145512B1 (de) |
JP (1) | JPH0764316B2 (de) |
CA (1) | CA1255278A (de) |
DE (1) | DE3464572D1 (de) |
FR (1) | FR2551723B1 (de) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2648106B1 (fr) * | 1989-06-08 | 1991-09-27 | Aerospatiale | Dispositif de butees escamotables pour pales de rotors de giravions, et tete de rotor le comportant |
FR2671049B1 (fr) * | 1990-12-27 | 1993-12-24 | Aerospatiale | Corps de moyeu de rotor de giravion. |
FR2671050B1 (fr) * | 1990-12-27 | 1993-04-16 | Aerospatiale | Tete de rotor articule de giravion a manchons intermediaires entre moyeu et pales. |
FR2689483B1 (fr) * | 1990-12-27 | 1995-02-24 | Aerospatiale | Corps de moyeu de rotor de giravion. |
CA2149673C (en) * | 1992-12-23 | 1998-08-18 | Francis E. Byrnes | Tubular elastomer damper |
US5913659A (en) * | 1993-11-22 | 1999-06-22 | United Technologies Corporation | Apparatus and method for adjusting rotor blade tracking |
FR2725687B1 (fr) * | 1994-10-12 | 1996-12-27 | Eurocopter France | Dispositif de butees de battement, a anneau escamotable de butees hautes, et tete de rotor le comportant |
US5562416A (en) * | 1995-08-10 | 1996-10-08 | Sikorsky Aircraft Corporation | Helicopter rotor blade mounting assembly |
FR2764577B1 (fr) * | 1997-06-13 | 1999-08-20 | Eurocopter France | Rotor de giravion a butees de battement fixes sur pales et moyeu, et a loi pas-battement determinee |
US6309182B1 (en) | 2000-04-05 | 2001-10-30 | The Boeing Company | Helicopter rotor droop stop mechanism |
US6921249B1 (en) * | 2003-06-05 | 2005-07-26 | The United States Of America As Represented By The Secretary Of The Navy | Main rotor shear restraint |
US7448855B2 (en) * | 2006-02-17 | 2008-11-11 | The Boeing Company | Droop stop mechanism for helicopter rotor blade |
US8882462B2 (en) | 2008-12-09 | 2014-11-11 | Sikorsky Aircraft Corporation | Lead stop for rotor system with fluid-elastomeric lead/lag damper |
US8919692B2 (en) | 2009-04-28 | 2014-12-30 | Sikorsky Aircraft Corporation | Proximity sensor valve and lock system using same |
US8500407B1 (en) * | 2010-03-28 | 2013-08-06 | The Boeing Company | Composite blade root-end drill-through lug and attachment method |
US9005060B2 (en) * | 2010-10-06 | 2015-04-14 | Zike, Llc | Derailleur |
FR2983830B1 (fr) * | 2011-12-07 | 2016-06-03 | Eurocopter France | Rotor pour giravion, comportant un mecanisme de butees en battement pour pales articulees sur un moyeu du rotor |
US20140079523A1 (en) * | 2012-09-14 | 2014-03-20 | Caterpillar Inc. | Joint interface for laminate structures |
US9682773B2 (en) | 2013-06-25 | 2017-06-20 | The Boeing Company | Systems and methods for blade attachment |
FR3017108A1 (fr) | 2014-01-31 | 2015-08-07 | Airbus Helicopters | Rotor pour giravion comportant un mecanisme de butee en battement, et giravion |
FR3017855B1 (fr) * | 2014-02-21 | 2016-04-29 | Airbus Helicopters | Rotor pour giravion comportant un mecanisme de butee en battement, et giravion |
FR3034077B1 (fr) | 2015-03-27 | 2018-05-04 | Airbus Helicopters | Mecanisme de butee en battement d'un ensemble sustentateur, rotor pour giravion comportant ce mecanisme de butee, et giravion |
US10787244B2 (en) * | 2018-06-19 | 2020-09-29 | Bell Helicopter Textron Inc. | Semi-automatic rotor blade fold mechanism |
CN111806680B (zh) * | 2020-06-19 | 2023-09-12 | 中国科学院地理科学与资源研究所 | 无人机复飞装置及无人机 |
CN114248908B (zh) * | 2021-12-30 | 2023-06-16 | 广东汇天航空航天科技有限公司 | 螺旋桨及飞行设备 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH212105A (de) * | 1938-02-12 | 1940-10-31 | Flettner Anton | Hubschrauber mit paarweise ineinander kämmenden Rotoren. |
US2465674A (en) * | 1945-08-07 | 1949-03-29 | United Aircraft Corp | Automatic blade droop stop |
US2614640A (en) * | 1951-02-01 | 1952-10-21 | United Aircraft Corp | Rotor blade support |
US2742098A (en) * | 1951-10-06 | 1956-04-17 | Mcculloch Motors Corp | Movement limiting means for blades of aircraft sustaining rotors |
US2719593A (en) * | 1953-03-05 | 1955-10-04 | United Aircraft Corp | Combined anti-flapping and droop stop |
US3147810A (en) * | 1962-09-12 | 1964-09-08 | Boeing Co | Restraining mechanism |
US3533713A (en) * | 1968-04-01 | 1970-10-13 | Lockheed Aircraft Corp | Rotor locking device |
US3853426A (en) * | 1972-09-05 | 1974-12-10 | United Aircraft Corp | Elastomeric helicopter rotor head with dynamic and static blade coning and droop stops |
US3778189A (en) * | 1972-09-05 | 1973-12-11 | United Aircraft Corp | Elastomeric helicopter rotor head with dynamic and static blade coning and droop stops |
GB1470597A (en) * | 1974-08-21 | 1977-04-14 | Sterling Winthrop Group Ltd | Reciprocating pumps for dispensing pastes liquids and other substances |
GB1500007A (en) * | 1974-08-22 | 1978-02-08 | Westland Aircraft Ltd | Rotor for rotary wing aircraft |
FR2423396A1 (fr) * | 1978-04-17 | 1979-11-16 | Aerospatiale | Outillage permettant le repliage des pales d'un rotor principal d'helicoptere |
GB2025338B (en) * | 1978-06-02 | 1982-08-04 | Aerospatiale | Helicopterrotor |
US4203708A (en) * | 1978-06-26 | 1980-05-20 | United Technologies Corporation | Elastomeric rotor load reaction system |
FR2434079A1 (fr) * | 1978-08-23 | 1980-03-21 | Aerospatiale | Dispositif pour limiter les battements des pales d'un rotor principal de giravion |
FR2458457A1 (fr) * | 1979-06-05 | 1981-01-02 | Aerospatiale | Rotor de giravion a moyeu articule compact |
IT1129070B (it) * | 1980-04-03 | 1986-06-04 | Agusta Aeronaut Costr | Rotore a giunti elastomerici per elicotteri |
US4368006A (en) * | 1980-08-07 | 1983-01-11 | The United States Of America As Represented By The Secretary Of The Navy | Droop stop for fully articulated rotor |
FR2516891A1 (fr) * | 1981-11-25 | 1983-05-27 | Aerospatiale | Rotor pour giravions, a articulations integrees dans le pied de pale |
IT1155133B (it) * | 1982-03-11 | 1987-01-21 | Agusta Aeronaut Costr | Rotore per elicotteri |
FR2529860B1 (fr) * | 1982-07-08 | 1987-01-02 | Aerospatiale | Plateau de moyeu, procede de fabrication et moyeu de rotor de giravion equipe de tels plateaux |
-
1983
- 1983-09-08 FR FR8314311A patent/FR2551723B1/fr not_active Expired
-
1984
- 1984-07-31 JP JP59159451A patent/JPH0764316B2/ja not_active Expired - Fee Related
- 1984-09-03 DE DE8484401752T patent/DE3464572D1/de not_active Expired
- 1984-09-03 EP EP84401752A patent/EP0145512B1/de not_active Expired
- 1984-09-06 CA CA000462581A patent/CA1255278A/en not_active Expired
- 1984-09-07 US US06/648,213 patent/US4652210A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA1255278A (en) | 1989-06-06 |
US4652210A (en) | 1987-03-24 |
EP0145512A1 (de) | 1985-06-19 |
FR2551723B1 (fr) | 1985-12-13 |
JPS6061398A (ja) | 1985-04-09 |
JPH0764316B2 (ja) | 1995-07-12 |
EP0145512B1 (de) | 1987-07-08 |
FR2551723A1 (fr) | 1985-03-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |