GB572494A - Improvements in and relating to the control of trimming and/or balancing tabs - Google Patents

Improvements in and relating to the control of trimming and/or balancing tabs

Info

Publication number
GB572494A
GB572494A GB2146/44A GB214644A GB572494A GB 572494 A GB572494 A GB 572494A GB 2146/44 A GB2146/44 A GB 2146/44A GB 214644 A GB214644 A GB 214644A GB 572494 A GB572494 A GB 572494A
Authority
GB
United Kingdom
Prior art keywords
tabs
control
switch
pilot
micro
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
GB2146/44A
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.)
Boulton Paul Aircraft Ltd
Original Assignee
Boulton Paul Aircraft 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 Boulton Paul Aircraft Ltd filed Critical Boulton Paul Aircraft Ltd
Priority to GB2146/44A priority Critical patent/GB572494A/en
Publication of GB572494A publication Critical patent/GB572494A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C13/00—Control systems or transmitting systems for actuating flying-control surfaces, lift-increasing flaps, air brakes, or spoilers

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

572,494. Controlling aircraft. BOULTON PAUL AIRCRAFT, Ltd., and NORTH, J. D. Feb. 5, 1944, No. 2146. [Class 4] Means for controlling a trimming or balancing tab comprises an electric motor for moving the tab to balance the aerodynamic load on the control surface, and an electric switch for controlling energization of the motor, arranged in the operative connection between the pilot's control member and the control surface so as to be operated against the action of a spring to energize the motor when the load transmitted by the operative connection exceeds a predetermined value. The invention is shown applied to elevators 7, the tabs 2 being actuated through irreversible screw-and-nut mechanism 4 and links 5 by reversible electric motors 1 carried by arms 6 attached to the elevators, the motors acting as mass balances for the latter. The lower end of the pilot's control column 8 moves in a frame 9 against compression springs, electric micro-switches being fitted at the ends of the frame and arranged to close when the springs exert a predetermined force. A switch 13 provided on the control column enables the pilot to initiate trimming movement of the tabs whenever he so desired after closure of one of the micro-switches. With the switch 13 closed, prior to movement of the control column, actuation of the latter results in the tabs 2 functioning automatically as balance tabs when either of the micro-switches is closed. Movement of the tabs continues until the aerodynamic force on the elevators is reduced to such an extent that the load on the control column is insufficient to hold the micro-switch closed against the spring loading. The characteristics of the driving motors may be such that the operation of the tabs lags behind that necessary to give complete balance, the load on the pilot's control increasing with the rate of movement, thus giving a sense of " feel." Continuous trimming and balancing is obtained if the switch 13 is not provided.
GB2146/44A 1944-02-05 1944-02-05 Improvements in and relating to the control of trimming and/or balancing tabs Expired GB572494A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2146/44A GB572494A (en) 1944-02-05 1944-02-05 Improvements in and relating to the control of trimming and/or balancing tabs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2146/44A GB572494A (en) 1944-02-05 1944-02-05 Improvements in and relating to the control of trimming and/or balancing tabs

Publications (1)

Publication Number Publication Date
GB572494A true GB572494A (en) 1945-10-10

Family

ID=9734415

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2146/44A Expired GB572494A (en) 1944-02-05 1944-02-05 Improvements in and relating to the control of trimming and/or balancing tabs

Country Status (1)

Country Link
GB (1) GB572494A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2583828A (en) * 1949-01-04 1952-01-29 United Aircraft Corp Automatic bungee
US2640665A (en) * 1948-06-02 1953-06-02 Cons Vultee Aircraft Corp Aircraft trim tab control
US2658701A (en) * 1949-10-12 1953-11-10 Saunders Roe Ltd Flying control for aircraft
US2679367A (en) * 1950-03-28 1954-05-25 North American Aviation Inc Trim tab control mechanism
US2707602A (en) * 1950-03-02 1955-05-03 William M Kauffman Sideslip stabilizing system
US2719684A (en) * 1951-09-04 1955-10-04 North American Aviation Inc Aircraft control

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640665A (en) * 1948-06-02 1953-06-02 Cons Vultee Aircraft Corp Aircraft trim tab control
US2583828A (en) * 1949-01-04 1952-01-29 United Aircraft Corp Automatic bungee
US2658701A (en) * 1949-10-12 1953-11-10 Saunders Roe Ltd Flying control for aircraft
US2707602A (en) * 1950-03-02 1955-05-03 William M Kauffman Sideslip stabilizing system
US2679367A (en) * 1950-03-28 1954-05-25 North American Aviation Inc Trim tab control mechanism
US2719684A (en) * 1951-09-04 1955-10-04 North American Aviation Inc Aircraft control

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