GB1441885A – Trailing wheel aircraft undercarriage assembly
– Google Patents
GB1441885A – Trailing wheel aircraft undercarriage assembly
– Google Patents
Trailing wheel aircraft undercarriage assembly
Info
Publication number
GB1441885A
GB1441885A
GB964374A
GB964374A
GB1441885A
GB 1441885 A
GB1441885 A
GB 1441885A
GB 964374 A
GB964374 A
GB 964374A
GB 964374 A
GB964374 A
GB 964374A
GB 1441885 A
GB1441885 A
GB 1441885A
Authority
GB
United Kingdom
Prior art keywords
pivot
retraction
lever arm
leg
lever
Prior art date
1973-03-05
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
GB964374A
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.)
Messier Hispano SA
Original Assignee
Messier Hispano SA
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.)
1973-03-05
Filing date
1974-03-04
Publication date
1976-07-07
1974-03-04
Application filed by Messier Hispano SA
filed
Critical
Messier Hispano SA
1976-07-07
Publication of GB1441885A
publication
Critical
patent/GB1441885A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
B—PERFORMING OPERATIONS; TRANSPORTING
B64—AIRCRAFT; AVIATION; COSMONAUTICS
B64C—AEROPLANES; HELICOPTERS
B64C25/00—Alighting gear
B64C25/02—Undercarriages
B64C25/08—Undercarriages non-fixed, e.g. jettisonable
B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
B64C25/18—Operating mechanisms
B64C25/20—Operating mechanisms mechanical
B—PERFORMING OPERATIONS; TRANSPORTING
B64—AIRCRAFT; AVIATION; COSMONAUTICS
B64C—AEROPLANES; HELICOPTERS
B64C25/00—Alighting gear
B64C25/02—Undercarriages
B64C25/08—Undercarriages non-fixed, e.g. jettisonable
B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
B64C25/12—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like sideways
B64C2025/125—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like sideways into the fuselage, e.g. main landing gear pivotally retracting into or extending out of the fuselage
Abstract
1441885 Aircraft undercarriages MESSIERHISPANO 4 March 1974 [5 March 1973] 9643/74 Heading B7G An aircraft undercarriage capable of sideways retraction has a wheel or wheels mounted on a lever arm which is rotated upwardly during the initial part of retraction movement to shorten the undercarriage. A leg 6 is pivoted at 15 and 17 to the fuselage for sideways retraction and is braced fore-and-aft by triangulated bracing members 12, 14, a wheel-carrying lever arm 4 being mounted on pivot 5 on the leg and biased downwardly by a shock absorber 8 which is connected at its upper end 19 to a cranked lever 18 in turn carried by a pivot pin 21 for rotational movement on the leg. Fast also with pin 21 is another lever 24 connected to a fixed point 27 on the aircraft by a strut 26. A lostmotion telescopic link 10 connects an arm on lever 18 to a point 9 on lever arm 4. A collapsible bracing member 28 locks the undercarriage in the down position and a jack 31 effects, retraction and extension. In operation, with brace 28 broken, jack 31 shortens to rock leg 5 about pviots 15, 17 and because pivot 27 is offset inwardly from pivots 15, 17 strut 26 causes levers 24, 18 to rock on pivot 21 and, through link 10 in its extended condition, draws lever arm 4 upwardly about pivot 5 against the resistance of shock abosrber 8, the geometry of the mechanism being such that the shock absorber resists the action of jack 31 during the first part of the retraction movement and assists it during the latter part. When the undercarriage is extended rocking of lever arm 4 results in free telescopic movement of link 10.
GB964374A
1973-03-05
1974-03-04
Trailing wheel aircraft undercarriage assembly
Expired
GB1441885A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
FR7307790A
FR2327920A1
(en)
1973-03-05
1973-03-05
PULLED WHEEL FUSELAGE TRAIN
Publications (1)
Publication Number
Publication Date
GB1441885A
true
GB1441885A
(en)
1976-07-07
Family
ID=9115785
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB964374A
Expired
GB1441885A
(en)
1973-03-05
1974-03-04
Trailing wheel aircraft undercarriage assembly
Country Status (10)
Country
Link
US
(1)
US3899147A
(en)
JP
(1)
JPS591634B2
(en)
BR
(1)
BR7401591D0
(en)
CS
(1)
CS207327B2
(en)
DE
(1)
DE2409299C2
(en)
FR
(1)
FR2327920A1
(en)
GB
(1)
GB1441885A
(en)
IN
(1)
IN139350B
(en)
IT
(1)
IT1008341B
(en)
SU
(1)
SU544363A3
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4681284A
(en)
*
1984-05-15
1987-07-21
Messier-Hispano-Bugatti
Landing gear having tandem wheels and independent shock absorbers
US5478030A
(en)
*
1993-07-15
1995-12-26
Messier-Eram
Laterally-raisable aircraft landing gear
Families Citing this family (12)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2393726A1
(en)
*
1977-06-10
1979-01-05
Messier Hispano Sa
IMPROVEMENTS TO LANDING BRAKES OF PULLED AND RETRACTION WHEEL SAILS
FR2450199A1
(en)
*
1978-12-29
1980-09-26
Messier Hispano Sa
PRINCIPAL LANDING AND SIDE LIFT LANDING GEAR FOR AIRCRAFT
US4328939A
(en)
*
1979-12-26
1982-05-11
The Boeing Company
Airplane main landing gear assembly
FR2501152A1
(en)
*
1981-03-05
1982-09-10
Messier Hispano Sa
LANDING TRAIN FOR AERODYNE
GB9223714D0
(en)
*
1992-11-12
1992-12-23
British Aerospace
Auxiliary control of aircraft landing gear movement
EP1041000A3
(en)
1999-03-31
2002-01-30
The Boeing Company
Main landing gear retractable within the fuselage of an airplane
US6360990B1
(en)
2000-08-30
2002-03-26
Northrop Grumman Corporation
Landing gear
US7188804B1
(en)
*
2004-06-25
2007-03-13
Boetto Steven C
Float retractable landing gear
FR2928623B1
(en)
*
2008-03-14
2010-03-12
Messier Dowty Sa
UNLOCKING AN AIRCRAFT AIRCRAFT BREAKER STABILIZATION BODY
FR2955310B1
(en)
*
2010-01-19
2012-02-17
Messier Dowty Sa
AIRCRAFT AIR TERMINAL TYPE OF BALANCING TYPE AND DEFORMABLE PARALLELOGRAM
EP3135581B1
(en)
*
2015-08-25
2018-03-21
Safran Landing Systems UK Limited
Aircraft landing gear assembly
US11279471B2
(en)
*
2019-05-07
2022-03-22
The Boeing Company
Bipedal nose landing gear for cargo aircraft
Family Cites Families (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR1090016A
(en)
*
1953-08-11
1955-03-25
Morane Saulnier
Retractable Landing Gear Improvements
US3083937A
(en)
*
1959-02-05
1963-04-02
English Electric Co Ltd
Aeroplane undercarriages
GB1006522A
(en)
*
1963-10-08
1965-10-06
Electro Hydraulics Ltd
Retractable undercarriages for aircraft
1973
1973-03-05
FR
FR7307790A
patent/FR2327920A1/en
active
Granted
1974
1974-02-27
DE
DE2409299A
patent/DE2409299C2/en
not_active
Expired
1974-03-01
US
US447245A
patent/US3899147A/en
not_active
Expired – Lifetime
1974-03-01
IT
IT48810/74A
patent/IT1008341B/en
active
1974-03-02
IN
IN446/CAL/74A
patent/IN139350B/en
unknown
1974-03-04
SU
SU742007480A
patent/SU544363A3/en
active
1974-03-04
GB
GB964374A
patent/GB1441885A/en
not_active
Expired
1974-03-04
CS
CS741555A
patent/CS207327B2/en
unknown
1974-03-05
BR
BR741591A
patent/BR7401591D0/en
unknown
1974-03-05
JP
JP49024861A
patent/JPS591634B2/en
not_active
Expired
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4681284A
(en)
*
1984-05-15
1987-07-21
Messier-Hispano-Bugatti
Landing gear having tandem wheels and independent shock absorbers
US5478030A
(en)
*
1993-07-15
1995-12-26
Messier-Eram
Laterally-raisable aircraft landing gear
Also Published As
Publication number
Publication date
JPS49118200A
(en)
1974-11-12
SU544363A3
(en)
1977-01-25
DE2409299A1
(en)
1974-09-12
FR2327920A1
(en)
1977-05-13
BR7401591D0
(en)
1974-12-03
JPS591634B2
(en)
1984-01-13
IT1008341B
(en)
1976-11-10
DE2409299C2
(en)
1983-03-24
US3899147A
(en)
1975-08-12
IN139350B
(en)
1976-06-12
FR2327920B1
(en)
1980-03-14
CS207327B2
(en)
1981-07-31
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Legal Events
Date
Code
Title
Description
1976-11-24
PS
Patent sealed [section 19, patents act 1949]
1986-11-05
PCNP
Patent ceased through non-payment of renewal fee
