GB1231662A – – Google Patents
GB1231662A – – Google Patents
Info
Publication number
GB1231662A
GB1231662A
GB1231662DA
GB1231662A
GB 1231662 A
GB1231662 A
GB 1231662A
GB 1231662D A
GB1231662D A
GB 1231662DA
GB 1231662 A
GB1231662 A
GB 1231662A
Authority
GB
United Kingdom
Prior art keywords
model
dampers
transmitted
foundation
supported
Prior art date
1967-06-05
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
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.)
1967-06-05
Filing date
1968-05-31
Publication date
1971-05-12
1968-05-31
Application filed
filed
Critical
1971-05-12
Publication of GB1231662A
publication
Critical
patent/GB1231662A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
B—PERFORMING OPERATIONS; TRANSPORTING
B64—AIRCRAFT; AVIATION; COSMONAUTICS
B64C—AEROPLANES; HELICOPTERS
B64C27/00—Rotorcraft; Rotors peculiar thereto
B64C27/001—Vibration damping devices
G—PHYSICS
G01—MEASURING; TESTING
G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
G01M9/02—Wind tunnels
G01M9/04—Details
B—PERFORMING OPERATIONS; TRANSPORTING
B64—AIRCRAFT; AVIATION; COSMONAUTICS
B64C—AEROPLANES; HELICOPTERS
B64C27/00—Rotorcraft; Rotors peculiar thereto
B64C27/001—Vibration damping devices
B64C2027/002—Vibration damping devices mounted between the rotor drive and the fuselage
Abstract
1,231,662. Wind tunnels. UNITED AIRCRAFT CORP. 31 May, 1968 [5 June, 1967], No. 26075/68. Heading B7G. [Also in Division F2] A wind tunnel model is supported from a foundation by means which transmit certain modes of vibration but not others: in particular, vertical vibrations of the model may be transmitted to the support and horizontal ones isolated therefrom. In Figs. 1 and 2, a model 10 is supported by three rods 12, 14, 16 each of which is connected to the model in the manner shown in Fig. 4, viz. by way of a universal joint 50 and a damper 38. The latter is a hydropneumatic piston-cylinder device the construction of which is shown in Fig. 7. The disposition of the dampers is such that, in Fig. 1, vertical vibrations of the model are transmitted to the foundation but horizontal ones are not. The dampers’ frequency response may however be such that steady horizontal loads are transmitted. Fig. 8 (not shown) depicts a fluidpressure circuit in which all the dampers are interconnected for conjoint operation.
GB1231662D
1967-06-05
1968-05-31
Expired
GB1231662A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US64351867A
1967-06-05
1967-06-05
Publications (1)
Publication Number
Publication Date
GB1231662A
true
GB1231662A
(en)
1971-05-12
Family
ID=24581161
Family Applications (2)
Application Number
Title
Priority Date
Filing Date
GB1231662D
Expired
GB1231662A
(en)
1967-06-05
1968-05-31
GB1231663D
Expired
GB1231663A
(en)
1967-06-05
1968-05-31
Family Applications After (1)
Application Number
Title
Priority Date
Filing Date
GB1231663D
Expired
GB1231663A
(en)
1967-06-05
1968-05-31
Country Status (4)
Country
Link
US
(1)
US3514054A
(en)
DE
(1)
DE1773526C3
(en)
FR
(1)
FR1583898A
(en)
GB
(2)
GB1231662A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US7127942B2
(en)
2000-09-07
2006-10-31
Airbus Uk Limited
Wind tunnel testing
Families Citing this family (25)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3635427A
(en)
*
1969-05-06
1972-01-18
Textron Inc
Aircraft vibration compensation system
DE2008977C3
(en)
*
1970-02-26
1974-01-10
Dornier Gmbh, 7990 Friedrichshafen
Rotor mast mounting for rotary wing aircraft
US3635429A
(en)
*
1970-03-27
1972-01-18
Textron Inc
Aircraft vibration compensation system
JPS5638438B1
(en)
*
1971-03-08
1981-09-07
BE790113A
(en)
*
1971-10-18
1973-04-13
Textron Inc
ISOLATOR DEVICE AGAINST VIBRATIONS IN A HELICOPTER
US3857534A
(en)
*
1972-02-04
1974-12-31
Textron Inc
Multi-frequency helicopter vibration isolation
US4033541A
(en)
*
1975-05-30
1977-07-05
Mcdonnell Douglas Corporation
Torque rejection soft mounted platform
US4088042A
(en)
*
1976-09-07
1978-05-09
The Boeing Company
Vibration isolation system
US4245956A
(en)
*
1978-12-15
1981-01-20
Nasa
Compensating linkage for main rotor control
US4405101A
(en)
*
1980-10-29
1983-09-20
United Technologies Corp.
Vibration isolation system
GB2160840B
(en)
*
1984-06-29
1987-12-02
Westland Plc
Method and apparatus for reducing vibration of a helicopter fuselage
US4912999A
(en)
*
1987-09-30
1990-04-03
The Boeing Company
System for pivotably supporting and transmitting power through a helicopter transmission and rotor
US5118051A
(en)
*
1989-04-18
1992-06-02
United Technologies Corporation
Roll vibration absorber
US6196514B1
(en)
*
1998-09-18
2001-03-06
Csa Engineering, Inc.
Large airborne stabilization/vibration isolation system
GB2356616A
(en)
*
1999-10-21
2001-05-30
John Ronald Watkinson
Helicopter with tiltable rotor assembly
US6644590B2
(en)
2000-09-15
2003-11-11
General Dynamics Advanced Information Systems, Inc.
Active system and method for vibration and noise reduction
US20020094274A1
(en)
*
2000-09-15
2002-07-18
Terpay Gregory Weston
Passive device for noise reduction
US6634862B2
(en)
2000-09-15
2003-10-21
General Dynamics Advanced Information Systems, Inc.
Hydraulic actuator
KR20090076903A
(en)
*
2006-10-12
2009-07-13
벨 헬리콥터 텍스트론 인크.
Vibration-attenuating hard-mounted pylon
US9145946B2
(en)
*
2013-03-15
2015-09-29
Bell Helicopter Textron Inc.
Active vibration isolation system
US9541149B2
(en)
*
2014-09-04
2017-01-10
The Boeing Company
Translational tuned mass damper with continuously adjustable damping characteristics for application to high speed wind tunnel testing
US20180265186A1
(en)
*
2017-03-15
2018-09-20
Bell Helicopter Textron Inc.
Vibration Isolation Systems for Advancing Blade Concept Rotorcraft
US20210403148A1
(en)
*
2017-03-15
2021-12-30
Bell Textron Inc.
Vibration Isolation Systems for Compound Helicopters
CN109765022A
(en)
*
2019-01-16
2019-05-17
南京航空航天大学
A kind of Helicopter Main Reducer vibrating isolation system experimental rig
CN110907127B
(en)
*
2019-12-04
2020-09-29
重庆大学
Use method of test model for simulating torsion effect of short building structure under wind load effect
Family Cites Families (9)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US1522243A
(en)
*
1923-08-07
1925-01-06
Jr Howard R Hughes
Shock absorber
US2569882A
(en)
*
1946-06-29
1951-10-02
Helieopter Corp Of America
Control and support connection for helicopter rotor systems
GB736383A
(en)
*
1952-08-29
1955-09-07
Renault
Improvements in and relating to elastic suspensions for vehicles
US2965372A
(en)
*
1958-07-08
1960-12-20
Wright Barry Corp
Pneumatic isolator
US3118504A
(en)
*
1961-02-13
1964-01-21
Bell Aerospace Corp
Method for control of rotary wing aircraft
US3100610A
(en)
*
1962-04-03
1963-08-13
Victor O Armstrong
Stabilizing system for a helicopter
US3176940A
(en)
*
1963-01-10
1965-04-06
United Aircraft Corp
Helicopter pod positioning and supporting means
US3236512A
(en)
*
1964-01-16
1966-02-22
Kirsch Jerry
Self-adjusting hydropneumatic kinetic energy absorption arrangement
US3367454A
(en)
*
1964-12-16
1968-02-06
Schweiz Wagons Aufzuegefab
Hydraulic damping devices
1967
1967-06-05
US
US643518A
patent/US3514054A/en
not_active
Expired – Lifetime
1968
1968-05-30
DE
DE1773526A
patent/DE1773526C3/en
not_active
Expired
1968-05-31
GB
GB1231662D
patent/GB1231662A/en
not_active
Expired
1968-05-31
GB
GB1231663D
patent/GB1231663A/en
not_active
Expired
1968-06-04
FR
FR1583898D
patent/FR1583898A/fr
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US7127942B2
(en)
2000-09-07
2006-10-31
Airbus Uk Limited
Wind tunnel testing
Also Published As
Publication number
Publication date
DE1773526C3
(en)
1975-06-12
FR1583898A
(en)
1969-12-05
DE1773526A1
(en)
1972-01-13
US3514054A
(en)
1970-05-26
GB1231663A
(en)
1971-05-12
DE1773526B2
(en)
1974-10-24
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Legal Events
Date
Code
Title
Description
1971-09-22
PS
Patent sealed [section 19, patents act 1949]
1976-12-31
PLNP
Patent lapsed through nonpayment of renewal fees
