GB495838A - Improvements in or connected with airscrews - Google Patents

Improvements in or connected with airscrews

Info

Publication number
GB495838A
GB495838A GB1415737A GB1415737A GB495838A GB 495838 A GB495838 A GB 495838A GB 1415737 A GB1415737 A GB 1415737A GB 1415737 A GB1415737 A GB 1415737A GB 495838 A GB495838 A GB 495838A
Authority
GB
United Kingdom
Prior art keywords
openings
blade
shutter
root
trailing edge
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
GB1415737A
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.)
GKN Aerospace Services Ltd
Original Assignee
Vickers Aviation 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 Vickers Aviation Ltd filed Critical Vickers Aviation Ltd
Priority to GB1415737A priority Critical patent/GB495838A/en
Publication of GB495838A publication Critical patent/GB495838A/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
    • B64C11/16—Blades
    • B64C11/20—Constructional features
    • B64C11/24—Hollow blades

Landscapes

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

Abstract

495,838. Airscrews. VICKERS (AVIATION), Ltd., and ELLIS, D. L. May 21, 1937, Nos. 14157/37; and 26238 /38, (divided out of 497,048). [Class 114] In an airscrew wherein the pitch angle varies from root to tip of the blade, openings are provided on the upper surface of each blade and near the trailing edge, and extend from the root for a part of the length of the blade and communicate with an inwardly extending duct to a source of suction or depression. The blade a is provided with a series of openings a<1> on its upper surface near the trailing edge, such openings communicating by a central duct all with a hollow boss and thence by openings a<12> with a carrier box b fixed to the engine. The box b has a passage b<1> connected by pipe c with the induction pipe of the driving engine. It may, however, be connected with a suction pump or other means of reducing the pressure. The area of the openings a<1> may be varied by means of shutter e slidable in a slot e<3> to control the opening. This shutter e is guided by pin-and-slot mechanism e<1>, e<2> and is actuated by rod e4 coupled to a screw e<5> movable in a nut member e<6> having an external toothed centre e<9> engaging a control rack e<8>. This arrangement may be used with a fixed or with a variable-pitch propeller.
GB1415737A 1937-05-21 1937-05-21 Improvements in or connected with airscrews Expired GB495838A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1415737A GB495838A (en) 1937-05-21 1937-05-21 Improvements in or connected with airscrews

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1415737A GB495838A (en) 1937-05-21 1937-05-21 Improvements in or connected with airscrews

Publications (1)

Publication Number Publication Date
GB495838A true GB495838A (en) 1938-11-21

Family

ID=10036036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1415737A Expired GB495838A (en) 1937-05-21 1937-05-21 Improvements in or connected with airscrews

Country Status (1)

Country Link
GB (1) GB495838A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2656096A (en) * 1946-01-04 1953-10-20 Rateau Soc Centrifugal pump and compressor
FR2475491A1 (en) * 1980-02-11 1981-08-14 Escher Wyss Gmbh Ship propeller with air outlets along blade leading edges - has air fed to hub from shaft-bearing-housing via annular channel in intermediate sleeve
US5217349A (en) * 1989-08-31 1993-06-08 Technology Integration Incorporated System and method for suppressing noise produced by rotors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2656096A (en) * 1946-01-04 1953-10-20 Rateau Soc Centrifugal pump and compressor
FR2475491A1 (en) * 1980-02-11 1981-08-14 Escher Wyss Gmbh Ship propeller with air outlets along blade leading edges - has air fed to hub from shaft-bearing-housing via annular channel in intermediate sleeve
US5217349A (en) * 1989-08-31 1993-06-08 Technology Integration Incorporated System and method for suppressing noise produced by rotors

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