FR1587546A - - Google Patents
Info
- Publication number
- FR1587546A FR1587546A FR1587546DA FR1587546A FR 1587546 A FR1587546 A FR 1587546A FR 1587546D A FR1587546D A FR 1587546DA FR 1587546 A FR1587546 A FR 1587546A
- Authority
- FR
- France
- 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
- B64C27/46—Blades
- B64C27/473—Constructional features
- B64C27/50—Blades foldable to facilitate stowage of aircraft
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Air Bags (AREA)
- Transmission Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US67488267A | 1967-10-12 | 1967-10-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1587546A true FR1587546A (fr) | 1970-03-20 |
Family
ID=24708265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1587546D Expired FR1587546A (fr) | 1967-10-12 | 1968-10-11 |
Country Status (4)
Country | Link |
---|---|
US (1) | US3484175A (fr) |
DE (1) | DE1781313A1 (fr) |
FR (1) | FR1587546A (fr) |
GB (1) | GB1230010A (fr) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3743441A (en) * | 1971-11-02 | 1973-07-03 | United Aircraft Corp | Helicopter blade folding and locking mechanism |
US3874817A (en) * | 1973-11-01 | 1975-04-01 | United Aircraft Corp | Apparatus for folding blades without changing pitch due to folding |
US4738592A (en) * | 1984-09-28 | 1988-04-19 | The Boeing Company | Cam assisted blade folding system |
US5246188A (en) * | 1989-09-14 | 1993-09-21 | Koutsoupidis Theodore K | Wing turbines in conjuction with propulsion systems for aircraft and helicopters |
US5211538A (en) * | 1991-11-27 | 1993-05-18 | Bell Helicopter Textron Inc. | Method for folding helicopter main rotor blades |
GB9204305D0 (en) * | 1992-02-28 | 1992-04-08 | Hamble Aerostructures | Locking device |
US8919692B2 (en) | 2009-04-28 | 2014-12-30 | Sikorsky Aircraft Corporation | Proximity sensor valve and lock system using same |
FR2991292B1 (fr) * | 2012-06-04 | 2014-05-23 | Etienne Jean Rampal | Dispositif pour repliage automatique des pales sur les rotors de giravions ou aeronefs de tout type |
FR3010046B1 (fr) * | 2013-08-28 | 2015-09-18 | Eurocopter France | Dispositif de repliage de pale, pale et aeronef |
US10858094B2 (en) | 2018-07-09 | 2020-12-08 | Bell Helicopter Textron Inc. | Method of blade fold for tiltrotor aircraft |
CN109677600A (zh) * | 2018-08-16 | 2019-04-26 | 深圳市格上格创新科技有限公司 | 一种可收缩无人机旋翼防护装置及无人机 |
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 |
CN111806682B (zh) * | 2020-06-19 | 2023-10-03 | 中国科学院地理科学与资源研究所 | 无人机复飞方法 |
CN112591083B (zh) * | 2020-12-25 | 2023-02-28 | 中国直升机设计研究所 | 一种桨叶折叠收藏整流结构 |
CN114313250A (zh) * | 2022-01-04 | 2022-04-12 | 广东汇天航空航天科技有限公司 | 折叠装置、螺旋桨、旋翼模组及飞行设备 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2738146A (en) * | 1953-02-19 | 1956-03-13 | Nicholas J Medvedeff | Convertiplane |
US2925130A (en) * | 1954-10-01 | 1960-02-16 | United Aircraft Corp | Means of folding rotor blades |
GB852841A (en) * | 1957-12-10 | 1960-11-02 | Westland Aircraft Ltd | Improvements in or relating to rotary wing aircraft |
US3097701A (en) * | 1960-10-27 | 1963-07-16 | United Aircraft Corp | Blade folding mechanism |
US3153455A (en) * | 1962-10-15 | 1964-10-20 | Boeing Co | Folding mechanism |
US3185408A (en) * | 1963-07-17 | 1965-05-25 | Boeing Co | Aircraft propulsion system |
US3247907A (en) * | 1963-09-18 | 1966-04-26 | Boeing Co | Blade folding mechanism for rotary wing aircraft |
US3187818A (en) * | 1964-12-31 | 1965-06-08 | Boeing Co | Blade folding mechanism |
-
1967
- 1967-10-12 US US674882A patent/US3484175A/en not_active Expired - Lifetime
-
1968
- 1968-09-20 GB GB1230010D patent/GB1230010A/en not_active Expired
- 1968-09-26 DE DE19681781313 patent/DE1781313A1/de active Pending
- 1968-10-11 FR FR1587546D patent/FR1587546A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1781313A1 (de) | 1971-03-04 |
US3484175A (en) | 1969-12-16 |
GB1230010A (fr) | 1971-04-28 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |