GB576115A - Improvements in or relating to hydraulic controlling means, more particularly for the landing gear of aircraft - Google Patents
Improvements in or relating to hydraulic controlling means, more particularly for the landing gear of aircraftInfo
- Publication number
- GB576115A GB576115A GB30754/39A GB3075439A GB576115A GB 576115 A GB576115 A GB 576115A GB 30754/39 A GB30754/39 A GB 30754/39A GB 3075439 A GB3075439 A GB 3075439A GB 576115 A GB576115 A GB 576115A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pipe
- valve
- accumulator
- piston
- position shown
- 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
- B64C25/02—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
- B64C25/22—Operating mechanisms fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
576,115. Hydraulic control systems ; hydraulic accumulators. BOYSSON, J. B. A. DE. Nov. 24, 1939, No. 30754. Convention date, Nov. 25, 1938. [Class 69 (ii)] For controlling the landing carriages 14, Fig. 1, of aircraft hydraulically by moving them from an operative position shown in full lines to an inoperative position shown in dotted lines, the jack 16 is connected to the pressure fluid supplied by a pump 1 by means of a valve 8 which is opened by the piston 5 of an accumulator 4 only when sufficient liquid is stored in the accumulator to effect the reverse operation of the carriage. When the valve 21 is set as shown in Fig. 1 and the valve 8 is opened, both ends 19, 20 of the jack 16 are connected to the chamber 7 of the accumulator, but the liquid admitted by pipe 22 acts on a larger area of the piston and so operates the piston-rod 18. On reversing the valve 21 through 90 degrees, the pipe 12 is cut off and liquid from the end 20 can return via pipe 24 to the tank 2, and liquid from the accumulator 4 passes into the end 19 and returns the piston 17 to the position shown. The piston 5 is acted upon by a spring or compressed air. In a modification, Fig. 2, the carriage 35 is retracted when the pipe 29 is connected to pipe 12 by a small clockwise rotation of the valve 23 and in this position the pipe 28 is connected to the pipe 24 leading back to the tank 2. In the position shown, the pipe 28 is connected to the pipe 13.and the carriage is not retracted. In further modifications, one accumulator may serve a number of actuating-devices for operating carriages of aircraft or other objects, or the accumulator 4 may be associated with an auxiliary accumulator which controls the valve 8. As shown in Fig. 5, the accumulator 4 is divided into two parts separated by a partition 47 in which is a stop valve 48, and the pipe 13 leads from the upper compartment. The valve stem of valve 8 passes through a packing 49. Such a construction prevents chattering.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR576115X | 1938-11-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB576115A true GB576115A (en) | 1946-03-20 |
Family
ID=8953848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30754/39A Expired GB576115A (en) | 1938-11-25 | 1939-11-24 | Improvements in or relating to hydraulic controlling means, more particularly for the landing gear of aircraft |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE576115A (en) |
| GB (1) | GB576115A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3501982A1 (en) * | 2017-12-21 | 2019-06-26 | Goodrich Corporation | Strut shrink using accumulator as energy source |
-
1939
- 1939-11-24 GB GB30754/39A patent/GB576115A/en not_active Expired
-
1959
- 1959-02-25 BE BE576115A patent/BE576115A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3501982A1 (en) * | 2017-12-21 | 2019-06-26 | Goodrich Corporation | Strut shrink using accumulator as energy source |
| US11130564B2 (en) | 2017-12-21 | 2021-09-28 | Goodrich Corporation | Strut shrink using accumulator as energy source |
Also Published As
| Publication number | Publication date |
|---|---|
| BE576115A (en) | 1959-08-25 |
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