GB681310A - - Google Patents

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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
Application number
Publication date
Publication of GB681310A publication Critical patent/GB681310A/en
Expired legal-status Critical Current

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  • 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.
GB681310D Expired GB681310A (en)

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)

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GB (1) GB681310A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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