GB868980A - Improvements in under-carriage shock absorbers for aircraft - Google Patents
Improvements in under-carriage shock absorbers for aircraftInfo
- Publication number
- GB868980A GB868980A GB12454/58A GB1245458A GB868980A GB 868980 A GB868980 A GB 868980A GB 12454/58 A GB12454/58 A GB 12454/58A GB 1245458 A GB1245458 A GB 1245458A GB 868980 A GB868980 A GB 868980A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- piston
- stroke
- orifices
- april
- 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
- B64C25/00—Alighting gear
- B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface
- B64C25/58—Arrangements or adaptations of shock-absorbers or springs
- B64C25/60—Oleo legs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
868,980. Hydro pneumatic shock-absorbers. SHORT BROS. & HARLAND Ltd. April 7, 1959 [April 18, 1958], No. 12454/58. Class 108(3). In an aeroplane undercarriage shock absorber, movement of the slidable tube 13 Fig. 1 is initially resisted by air compression, in the housing 10 acting on the crosssectional area of the tube 13 and in the latter part of the stroke the tube 13 engages a floating annular piston 18 to increase the effective, area. The tube 13 is engaged internally by a plunger tube 19 carrying a piston 20 having orifices 201 to provide dashpot action, some of the orifices 201 being closed by a flap valve (not shown) during the return stroke. The tube 13 also encloses a concentric metering tube 24 having holes in the wall which are progressively passed by the piston 20. A piston 25 discourages emulsification. Stops 131 on the tube 13 engage the annular piston 18 at the end of the initial part of the stroke, the piston 18 normally resting against stops 23 on the housing 10. An additional compressed air chamber 26 may be provided in the lower portion of the tube 13 and is separated from the oil by a floating piston 28.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB12454/58A GB868980A (en) | 1958-04-18 | 1958-04-18 | Improvements in under-carriage shock absorbers for aircraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB12454/58A GB868980A (en) | 1958-04-18 | 1958-04-18 | Improvements in under-carriage shock absorbers for aircraft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB868980A true GB868980A (en) | 1961-05-25 |
Family
ID=10004903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12454/58A Expired GB868980A (en) | 1958-04-18 | 1958-04-18 | Improvements in under-carriage shock absorbers for aircraft |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB868980A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2461854A1 (en) * | 1979-07-17 | 1981-02-06 | Profil Verbindungstechnik Gmbh | SHOCK ABSORBER TO REDUCE THE NOISE OF MACHINES COMPRISING COMBINED MOVEMENTS |
| EP3486167A1 (en) * | 2017-11-16 | 2019-05-22 | Safran Landing Systems UK Limited | Centre biased actuator |
-
1958
- 1958-04-18 GB GB12454/58A patent/GB868980A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2461854A1 (en) * | 1979-07-17 | 1981-02-06 | Profil Verbindungstechnik Gmbh | SHOCK ABSORBER TO REDUCE THE NOISE OF MACHINES COMPRISING COMBINED MOVEMENTS |
| EP3486167A1 (en) * | 2017-11-16 | 2019-05-22 | Safran Landing Systems UK Limited | Centre biased actuator |
| US11027830B2 (en) | 2017-11-16 | 2021-06-08 | Safran Landing Systems Uk Ltd | Center biased actuator |
| US11565798B2 (en) | 2017-11-16 | 2023-01-31 | Safran Landing Systems Uk Ltd | Center biased actuator |
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