GB627737A - Improvements in hydraulic servo motors applicable to aircraft - Google Patents

Improvements in hydraulic servo motors applicable to aircraft

Info

Publication number
GB627737A
GB627737A GB123947A GB123947A GB627737A GB 627737 A GB627737 A GB 627737A GB 123947 A GB123947 A GB 123947A GB 123947 A GB123947 A GB 123947A GB 627737 A GB627737 A GB 627737A
Authority
GB
United Kingdom
Prior art keywords
housing
valve
control
supply
control surface
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
GB123947A
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.)
HM Hobson Ltd
Original Assignee
HM Hobson Ltd
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.)
Filing date
Publication date
Application filed by HM Hobson Ltd filed Critical HM Hobson Ltd
Priority to GB123947A priority Critical patent/GB627737A/en
Publication of GB627737A publication Critical patent/GB627737A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
    • F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
    • F15B9/10—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor in which the controlling element and the servomotor each controls a separate member, these members influencing different fluid passages or the same passage

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)

Abstract

627,737. Fluid-pressure servomotor-control systems. HOBSON, Ltd., H. M., and WESTBURY, R. Jan. 14, 1947, No. 1239. [Class 135] A manually-controlled hydraulic power-assisted mechanism, e.g. for actuating an aircraft flying-control surface, is irreversible both during power-assisted actuation and, should the pressure supply fail during direct manual actuation. A housing 10, Fig. 4, sliding on a piston 15 having a rod 14 pivoted to a fixed member, is pivoted to an arm 18 operatively connected to the control surface 20. A member 23, actuated by the pilot's control lever, is in pin'-and-slot connection with the housing and is linked to a threeland valve 13 controlling the communication of the supply line 35 and the return line 33 with passages 36, 37 leading to the ends of the power cylinder 11. Should the supply pressure fail, liquid is trapped within the housing by a check-valve 38 in the supply line and by a spring-loaded valve 39 which is normally maintained open by the supply pressure acting through a pipe 40. During direct manual actuation, the central land 53 of the control valve is moved to uncover a passage 42 communicating through checkvalves 43, 44 with the ends of the power cylinder and thus providing a byepass to enable the trapped liquid to traverse the piston. Movement of the control surface and therefore the housing by the external load is prevented by the hydraulic lock set up either by re-centring the control valve or by one of the check-valves 43, 44. Specification 569,924 is referred to. Reference has been directed by the Comptroller to Specification 629,086.
GB123947A 1947-01-14 1947-01-14 Improvements in hydraulic servo motors applicable to aircraft Expired GB627737A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB123947A GB627737A (en) 1947-01-14 1947-01-14 Improvements in hydraulic servo motors applicable to aircraft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB123947A GB627737A (en) 1947-01-14 1947-01-14 Improvements in hydraulic servo motors applicable to aircraft

Publications (1)

Publication Number Publication Date
GB627737A true GB627737A (en) 1949-08-15

Family

ID=9718530

Family Applications (1)

Application Number Title Priority Date Filing Date
GB123947A Expired GB627737A (en) 1947-01-14 1947-01-14 Improvements in hydraulic servo motors applicable to aircraft

Country Status (1)

Country Link
GB (1) GB627737A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3031340A1 (en) * 2015-01-06 2016-07-08 Airbus Helicopters SERVO CONTROL AND AIRCRAFT EQUIPPED WITH SUCH SERVOCAMMANDE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3031340A1 (en) * 2015-01-06 2016-07-08 Airbus Helicopters SERVO CONTROL AND AIRCRAFT EQUIPPED WITH SUCH SERVOCAMMANDE
EP3042847A1 (en) 2015-01-06 2016-07-13 Airbus Helicopters A servo-control and an aircraft having such a servo-control
US9732769B2 (en) 2015-01-06 2017-08-15 Airbus Helicopters Servo-control and an aircraft having such a servo-control

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