FR2754779B1 - Procede de repliage des pales d'un rotor principal de giravion et dispositif de mise en oeuvre - Google Patents
Procede de repliage des pales d'un rotor principal de giravion et dispositif de mise en oeuvreInfo
- Publication number
- FR2754779B1 FR2754779B1 FR9612817A FR9612817A FR2754779B1 FR 2754779 B1 FR2754779 B1 FR 2754779B1 FR 9612817 A FR9612817 A FR 9612817A FR 9612817 A FR9612817 A FR 9612817A FR 2754779 B1 FR2754779 B1 FR 2754779B1
- Authority
- FR
- France
- Prior art keywords
- giravion
- blades
- folding
- main rotor
- implementing same
- 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 - Fee Related
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)
- Toys (AREA)
- Transmission Devices (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9612817A FR2754779B1 (fr) | 1996-10-22 | 1996-10-22 | Procede de repliage des pales d'un rotor principal de giravion et dispositif de mise en oeuvre |
US08/953,985 US6047924A (en) | 1996-10-22 | 1997-10-20 | Method of folding the blades of a main rotor of a rotary-wing aircraft, and apparatus for implementing the method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9612817A FR2754779B1 (fr) | 1996-10-22 | 1996-10-22 | Procede de repliage des pales d'un rotor principal de giravion et dispositif de mise en oeuvre |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2754779A1 FR2754779A1 (fr) | 1998-04-24 |
FR2754779B1 true FR2754779B1 (fr) | 1998-12-31 |
Family
ID=9496865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9612817A Expired - Fee Related FR2754779B1 (fr) | 1996-10-22 | 1996-10-22 | Procede de repliage des pales d'un rotor principal de giravion et dispositif de mise en oeuvre |
Country Status (2)
Country | Link |
---|---|
US (1) | US6047924A (fr) |
FR (1) | FR2754779B1 (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6538690B1 (en) * | 2000-03-08 | 2003-03-25 | Harris Corporation | Timing control in acousto-optic scanner based on acoustic velocity of traveling wave lens |
US6830214B2 (en) * | 2002-07-12 | 2004-12-14 | Franklin D. Carson | Rotary-wing aircraft |
US6908286B2 (en) * | 2003-07-10 | 2005-06-21 | Sikorsky Aircraft Corporation | Main rotor shaft mounted hydraulic pressure system |
FR2890936B1 (fr) * | 2005-09-19 | 2009-04-24 | Eurocopter France | Procede et dispositif de blocage en pas d'une pale repliable d'un rotor de giravion |
US7798442B2 (en) * | 2006-03-17 | 2010-09-21 | Sikorsky Aircraft Corporation | Rotor assemblies having automatic blade folding systems |
US8192159B2 (en) * | 2008-12-02 | 2012-06-05 | The Boeing Company | Rigid rotor assembly for folding helicopter blades |
US8919692B2 (en) | 2009-04-28 | 2014-12-30 | Sikorsky Aircraft Corporation | Proximity sensor valve and lock system using same |
US9108727B2 (en) | 2010-06-16 | 2015-08-18 | Sikorsky Aircraft Corporation | Blade fold system monitoring |
GB2491129B (en) * | 2011-05-23 | 2014-04-23 | Blue Bear Systems Res Ltd | Air vehicle |
FR3010046B1 (fr) | 2013-08-28 | 2015-09-18 | Eurocopter France | Dispositif de repliage de pale, pale et aeronef |
CN105799917B (zh) * | 2016-03-17 | 2019-11-19 | 中国直升机设计研究所 | 一种直升机旋翼桨叶系留方法及直升机旋翼桨叶系留装置 |
CN109508027B (zh) * | 2018-12-24 | 2020-11-20 | 南京航空航天大学 | 基于鲁棒控制理论的火箭助推发射的控制方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3153455A (en) * | 1962-10-15 | 1964-10-20 | Boeing Co | Folding mechanism |
US3369611A (en) * | 1967-04-27 | 1968-02-20 | Navy Usa | Pitch mechanism lock for main helicopter rotor blade |
GB1316320A (en) * | 1970-12-18 | 1973-05-09 | Westland Aircraft Ltd | Rotary wing aircraft with folding rotor blades |
US3874817A (en) * | 1973-11-01 | 1975-04-01 | United Aircraft Corp | Apparatus for folding blades without changing pitch due to folding |
CA1161413A (fr) * | 1980-10-10 | 1984-01-31 | Roderick A. Maclennan | Calage automatique en position pour aubes de rotor d'helicoptere rabattables |
US4738592A (en) * | 1984-09-28 | 1988-04-19 | The Boeing Company | Cam assisted blade folding system |
US5149013A (en) * | 1991-05-16 | 1992-09-22 | United Technologies Corporation | Retractable helicopter rotor |
US5322415A (en) * | 1992-11-18 | 1994-06-21 | United Technologies Corporation | Pitch actuation system restraint device for a helicopter blade folding system |
FR2742726B1 (fr) * | 1995-12-22 | 1998-02-20 | Eurocopter France | Dispositif de repliage d'une pale d'un rotor de giravion |
-
1996
- 1996-10-22 FR FR9612817A patent/FR2754779B1/fr not_active Expired - Fee Related
-
1997
- 1997-10-20 US US08/953,985 patent/US6047924A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2754779A1 (fr) | 1998-04-24 |
US6047924A (en) | 2000-04-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |
Effective date: 20110630 |