GB560207A - Improvements in control arrangements for variable pitch airscrews - Google Patents

Improvements in control arrangements for variable pitch airscrews

Info

Publication number
GB560207A
GB560207A GB1368442A GB1368442A GB560207A GB 560207 A GB560207 A GB 560207A GB 1368442 A GB1368442 A GB 1368442A GB 1368442 A GB1368442 A GB 1368442A GB 560207 A GB560207 A GB 560207A
Authority
GB
United Kingdom
Prior art keywords
pump
jack
valve
normal range
operated
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
GB1368442A
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.)
De Havilland Aircraft Co Ltd
Original Assignee
De Havilland Aircraft Co 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 De Havilland Aircraft Co Ltd filed Critical De Havilland Aircraft Co Ltd
Priority to GB1368442A priority Critical patent/GB560207A/en
Publication of GB560207A publication Critical patent/GB560207A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/30—Blade pitch-changing mechanisms
    • B64C11/38—Blade pitch-changing mechanisms fluid, e.g. hydraulic

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Reciprocating Pumps (AREA)

Abstract

560,207. Fluid pressure servomotor control systems. DE HAVILLAND AIRCRAFT CO., Ltd., MOULT, E. S., GILLMORE, K. B., WARDE, R. H., and DOVE, E. B. Sept. 29, 1942, No. 13684. [Class 135] Means for controlling the pitch of an airscrew comprises a jack 13, Fig. 1, operated for the normal range of control from a pump 10 and governor-controlled unit 11, and operated outside the normal range from a variabledelivery pump 23 of the kind which maintains a predetermined output pressure, a valve 22 being provided which is operable to connect the pump 23 to the jack whilst connecting the flow from the pump 10 to exhaust. The inlet to the pump 23 may be boosted by a supplementary pump, or a pressure accumulator may be incorporated in the outlet therefrom. The valve 22 is manually operated mechanically or electrically through push-button control, and may be slidable as shown in Fig. 3 or constituted by a plurality of poppet or flap valves. Specifications 509,298, 509,299, 509,300 and 544,339, [all in Group XXXIII], are referred to.
GB1368442A 1942-09-29 1942-09-29 Improvements in control arrangements for variable pitch airscrews Expired GB560207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1368442A GB560207A (en) 1942-09-29 1942-09-29 Improvements in control arrangements for variable pitch airscrews

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1368442A GB560207A (en) 1942-09-29 1942-09-29 Improvements in control arrangements for variable pitch airscrews

Publications (1)

Publication Number Publication Date
GB560207A true GB560207A (en) 1944-03-24

Family

ID=10027529

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1368442A Expired GB560207A (en) 1942-09-29 1942-09-29 Improvements in control arrangements for variable pitch airscrews

Country Status (1)

Country Link
GB (1) GB560207A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2465090A (en) * 1945-05-17 1949-03-22 Gen Motors Corp Regulator for controllable pitch propellers
EP2990326A1 (en) * 2014-08-28 2016-03-02 Caterpillar Propulsion Production AB System and method for indicating a pitch angle of a variable marine propeller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2465090A (en) * 1945-05-17 1949-03-22 Gen Motors Corp Regulator for controllable pitch propellers
EP2990326A1 (en) * 2014-08-28 2016-03-02 Caterpillar Propulsion Production AB System and method for indicating a pitch angle of a variable marine propeller
WO2016029982A1 (en) * 2014-08-28 2016-03-03 Caterpillar Propulsion Production Ab System and method for indicating a pitch angle of a variable marine propeller

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