GB1519380A - Method and apparatus to control aircraft having dual rigid rotors - Google Patents
Method and apparatus to control aircraft having dual rigid rotorsInfo
- Publication number
- GB1519380A GB1519380A GB44425/76A GB4442576A GB1519380A GB 1519380 A GB1519380 A GB 1519380A GB 44425/76 A GB44425/76 A GB 44425/76A GB 4442576 A GB4442576 A GB 4442576A GB 1519380 A GB1519380 A GB 1519380A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cyclic pitch
- rotor
- rigid rotors
- control aircraft
- cyclic
- 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
- B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
- B64C27/80—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement for differential adjustment of blade pitch between two or more lifting rotors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Toys (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
1519380 Helicopters UNITED TECHNOLOGIES CORP 26 Oct 1976 [13 Nov 1975 (2)] 44425/76 Headings B7W and B7G A control for a helicopter having dual coaxial contra-rotating rigid rotors varies the cyclic control phase angle of each rotor in flight as a function of forward speed. This controls the coupling of lateral cyclic pitch with longitudinal cyclic pitch so as to introduce differential cyclic pitch inputs which automatically produce aerodynamic moments in each rotor to minimize manoeuvre - generated gyroscopic precession moments.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/631,599 US4027999A (en) | 1975-11-13 | 1975-11-13 | Analog mixer to vary helicopter rotor phase angle in flight |
US05/631,600 US4008979A (en) | 1975-11-13 | 1975-11-13 | Control for helicopter having dual rigid rotors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1519380A true GB1519380A (en) | 1978-07-26 |
Family
ID=27091437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB44425/76A Expired GB1519380A (en) | 1975-11-13 | 1976-10-26 | Method and apparatus to control aircraft having dual rigid rotors |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS5951479B2 (en) |
BR (1) | BR7607626A (en) |
DE (1) | DE2651577C2 (en) |
FR (1) | FR2331479A1 (en) |
GB (1) | GB1519380A (en) |
IL (1) | IL50878A (en) |
IT (1) | IT1064383B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015017101A1 (en) * | 2013-07-29 | 2015-02-05 | Sikorsky Aircraft Corporation | Adjustable scissor control link |
EP3126225A4 (en) * | 2014-04-02 | 2017-12-20 | Sikorsky Aircraft Corporation | Rotor phasing control |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6138778U (en) * | 1984-08-13 | 1986-03-11 | 株式会社 壬生電機製作所 | terminal board |
JPS6369482U (en) * | 1986-10-24 | 1988-05-10 | ||
DE19627869A1 (en) * | 1996-07-11 | 1998-01-15 | Zf Luftfahrttechnik Gmbh | helicopter |
DE102007002586A1 (en) | 2007-01-12 | 2008-07-24 | Rotorfly Ltd. | rotor system |
CN117419885B (en) * | 2023-12-19 | 2024-03-19 | 中国空气动力研究与发展中心低速空气动力研究所 | Scissor type tail rotor wind tunnel test bed |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2427936A (en) * | 1943-09-18 | 1947-09-23 | Jr Nathaniel B Wales | Control mechanism for helicopters having coaxial counterrotating rotors |
FR995459A (en) * | 1945-03-06 | 1951-12-03 | Method and device for improving the maneuverability of articulated rotary wing aircraft | |
US2748876A (en) * | 1951-01-12 | 1956-06-05 | Vertol Aircraft Corp | Means for controlling tip-path of rotors |
US3409248A (en) * | 1965-10-22 | 1968-11-05 | Harvard J. Bryan | Rotary winged aircraft with drag propelling rotors and controls |
US3409249A (en) * | 1966-06-29 | 1968-11-05 | United Aircraft Corp | Coaxial rigid rotor helicopter and method of flying same |
FR1534974A (en) * | 1967-06-28 | 1968-08-02 | United Aircraft Corp | Improvements to helicopters with rigid coaxial rotors and to methods of piloting such helicopters |
US3521971A (en) * | 1968-07-17 | 1970-07-28 | United Aircraft Corp | Method and apparatus for controlling aircraft |
US3570786A (en) * | 1969-08-07 | 1971-03-16 | United Aircraft Corp | Control apparatus and method for operating an aircraft |
JPS5614519B1 (en) * | 1971-04-06 | 1981-04-04 |
-
1976
- 1976-10-26 GB GB44425/76A patent/GB1519380A/en not_active Expired
- 1976-11-10 IL IL50878A patent/IL50878A/en unknown
- 1976-11-11 BR BR7607626A patent/BR7607626A/en unknown
- 1976-11-12 JP JP51136816A patent/JPS5951479B2/en not_active Expired
- 1976-11-12 FR FR7634098A patent/FR2331479A1/en active Granted
- 1976-11-12 IT IT29285/76A patent/IT1064383B/en active
- 1976-11-12 DE DE2651577A patent/DE2651577C2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015017101A1 (en) * | 2013-07-29 | 2015-02-05 | Sikorsky Aircraft Corporation | Adjustable scissor control link |
US9315265B2 (en) | 2013-07-29 | 2016-04-19 | Sikorsky Aircraft Corporation | Adjustable scissor control link |
EP3027504A4 (en) * | 2013-07-29 | 2017-04-12 | Sikorsky Aircraft Corporation | Adjustable scissor control link |
EP3126225A4 (en) * | 2014-04-02 | 2017-12-20 | Sikorsky Aircraft Corporation | Rotor phasing control |
US10370096B2 (en) | 2014-04-02 | 2019-08-06 | Sikorsky Aircraft Corporation | Rotor phase control |
Also Published As
Publication number | Publication date |
---|---|
IL50878A (en) | 1980-01-31 |
IL50878A0 (en) | 1977-01-31 |
JPS5262898A (en) | 1977-05-24 |
FR2331479B1 (en) | 1983-02-11 |
IT1064383B (en) | 1985-02-18 |
BR7607626A (en) | 1977-09-27 |
DE2651577C2 (en) | 1986-07-31 |
JPS5951479B2 (en) | 1984-12-14 |
FR2331479A1 (en) | 1977-06-10 |
DE2651577A1 (en) | 1977-05-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |