GB1519380A - Method and apparatus to control aircraft having dual rigid rotors - Google Patents

Method and apparatus to control aircraft having dual rigid rotors

Info

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
Application number
GB44425/76A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Raytheon Technologies Corp
Original Assignee
United Technologies Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US05/631,599 external-priority patent/US4027999A/en
Priority claimed from US05/631,600 external-priority patent/US4008979A/en
Application filed by United Technologies Corp filed Critical United Technologies Corp
Publication of GB1519380A publication Critical patent/GB1519380A/en
Expired legal-status Critical Current

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

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.
GB44425/76A 1975-11-13 1976-10-26 Method and apparatus to control aircraft having dual rigid rotors Expired GB1519380A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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
JPS5262898A (en) 1977-05-24
IT1064383B (en) 1985-02-18
IL50878A (en) 1980-01-31
DE2651577A1 (en) 1977-05-26
JPS5951479B2 (en) 1984-12-14
BR7607626A (en) 1977-09-27
DE2651577C2 (en) 1986-07-31
FR2331479B1 (en) 1983-02-11
FR2331479A1 (en) 1977-06-10
IL50878A0 (en) 1977-01-31

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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