GB681310A - - Google Patents
Info
- Publication number
- GB681310A GB681310A GB681310DA GB681310A GB 681310 A GB681310 A GB 681310A GB 681310D A GB681310D A GB 681310DA GB 681310 A GB681310 A GB 681310A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- control surface
- fluid
- lever
- auxiliary
- 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
Landscapes
- Actuator (AREA)
- Mechanical Control Devices (AREA)
Abstract
681,310. Fluid-pressure servomotor-control systems. SMITH & SONS (ENGLAND), Ltd., S. May 9, 1951 [May 19, 1950], No. 12671/50. Class 135. A fluid-operated actuator for a control surface 1 of a dirigible object comprises a main piston- and-cylinder 10 rigidly connected to the control surface, an auxiliary piston-and cylinder 14, fluid paths 21, 22 with restrictions 23, 24 interconnecting the corresponding ends of the two cylinders and a connection 11 between the auxiliary cylinder and the control surface such that a persistent load on the main piston is relieved by the auxiliary piston. The connection 11 consists of a spring-loaded link, and the two pistons act on opposite ends of a lever 5 by which the control surface is carried. As shown, the actuator is controlled by a gyroscope 35 acting through a lever 26 on a valve 18 which controls the flow of hydraulic fluid to, and its exhaust from, the main piston-andcylinder. A follow-up effect is provided by connecting the stem of piston 10 to the lever 26. In practice, short term control movements are effected solely by the main piston, and the auxiliary piston is brought into action only on long period movements.
Publications (1)
Publication Number | Publication Date |
---|---|
GB681310A true GB681310A (en) | 1900-01-01 |
Family
ID=1750501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB681310D Expired GB681310A (en) |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB681310A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007141434A1 (en) * | 2006-06-07 | 2007-12-13 | Renault S.A.S. | Method and system of continuous control of the position of an actuator for changing the compression rate of a thermic engine |
-
0
- GB GB681310D patent/GB681310A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007141434A1 (en) * | 2006-06-07 | 2007-12-13 | Renault S.A.S. | Method and system of continuous control of the position of an actuator for changing the compression rate of a thermic engine |
FR2902145A1 (en) * | 2006-06-07 | 2007-12-14 | Renault Sas | METHOD AND SYSTEM FOR CONTINUOUSLY CONTROLLING THE POSITION OF A COMPRESSION RATE CHANGE ACTUATOR OF A THERMAL ENGINE |
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