FR2491865B1 - - Google Patents
Info
- Publication number
- FR2491865B1 FR2491865B1 FR8119141A FR8119141A FR2491865B1 FR 2491865 B1 FR2491865 B1 FR 2491865B1 FR 8119141 A FR8119141 A FR 8119141A FR 8119141 A FR8119141 A FR 8119141A FR 2491865 B1 FR2491865 B1 FR 2491865B1
- 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
- B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
-
- 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)
- Toys (AREA)
- Transmission Devices (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/195,808 US4354234A (en) | 1980-10-10 | 1980-10-10 | Automatic lock-positioning of foldable helicopter blades |
| US06/195,723 US4376979A (en) | 1980-10-10 | 1980-10-10 | Updated lock-positioning of foldable helicopter blades |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2491865A1 FR2491865A1 (en) | 1982-04-16 |
| FR2491865B1 true FR2491865B1 (en) | 1983-12-23 |
Family
ID=26891271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8119141A Granted FR2491865A1 (en) | 1980-10-10 | 1981-10-12 | POSITIONING OF AUTOMATIC LOCKING OF FOLDING BLADES OF HELICOPTER |
Country Status (8)
| Country | Link |
|---|---|
| AU (1) | AU540743B2 (en) |
| CA (1) | CA1161413A (en) |
| CH (1) | CH652673A5 (en) |
| DE (1) | DE3139720C2 (en) |
| ES (1) | ES506143A0 (en) |
| FR (1) | FR2491865A1 (en) |
| GB (1) | GB2085194B (en) |
| IT (1) | IT1138938B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4696445A (en) * | 1986-09-18 | 1987-09-29 | United Technologies Corporation | Collective control system for a helicopter |
| AU587363B1 (en) * | 1988-07-27 | 1989-08-10 | Richard Henry Tollervey | Improvements to helicopter rotor blades |
| FR2754779B1 (en) * | 1996-10-22 | 1998-12-31 | Eurocopter France | METHOD FOR FOLDING THE BLADES OF A MAIN ROTOR OF A GIRAVION AND DEVICE FOR IMPLEMENTING SAME |
| FR2931132B1 (en) | 2008-05-19 | 2010-04-23 | Eurocopter France | ASSISTED CONTROL SYSTEM OF A GIRAVON |
| US9682771B2 (en) * | 2013-08-14 | 2017-06-20 | Sikorsky Aircraft Corporation | Controlling rotor blades of a swashplateless rotor |
| CN114465065B (en) * | 2022-01-06 | 2023-11-03 | 广东汇天航空航天科技有限公司 | Aircraft main shaft slip ring device, aircraft rotor system and aircraft |
| CN114802739B (en) * | 2022-06-09 | 2023-04-07 | 广东汇天航空航天科技有限公司 | Rotor positioning method for aircraft, aircraft and storage medium |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3698662A (en) * | 1970-10-12 | 1972-10-17 | Lockheed Aircraft Corp | Apparatus and method for sequencing the folding and unfolding of rotor blades in a compound vehicle |
| US4103848A (en) * | 1977-03-08 | 1978-08-01 | United Technologies Corporation | Variable incidence helicopter stabilator and fail safe actuator |
| US4284387A (en) * | 1979-05-02 | 1981-08-18 | United Technologies Corp. | Blade fold restraint system |
-
1981
- 1981-09-17 CA CA000386099A patent/CA1161413A/en not_active Expired
- 1981-10-01 GB GB8129608A patent/GB2085194B/en not_active Expired
- 1981-10-06 DE DE3139720A patent/DE3139720C2/en not_active Expired - Fee Related
- 1981-10-09 ES ES506143A patent/ES506143A0/en active Granted
- 1981-10-09 CH CH6471/81A patent/CH652673A5/en not_active IP Right Cessation
- 1981-10-09 IT IT24415/81A patent/IT1138938B/en active
- 1981-10-09 AU AU76227/81A patent/AU540743B2/en not_active Ceased
- 1981-10-12 FR FR8119141A patent/FR2491865A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| AU7622781A (en) | 1982-04-22 |
| FR2491865A1 (en) | 1982-04-16 |
| GB2085194A (en) | 1982-04-21 |
| CH652673A5 (en) | 1985-11-29 |
| DE3139720C2 (en) | 1994-02-10 |
| IT1138938B (en) | 1986-09-17 |
| GB2085194B (en) | 1984-03-07 |
| DE3139720A1 (en) | 1982-05-19 |
| ES8206331A1 (en) | 1982-08-16 |
| ES506143A0 (en) | 1982-08-16 |
| IT8124415A0 (en) | 1981-10-09 |
| CA1161413A (en) | 1984-01-31 |
| AU540743B2 (en) | 1984-11-29 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |