GB515575A - Improvements in or relating to variable pitch propellers - Google Patents

Improvements in or relating to variable pitch propellers

Info

Publication number
GB515575A
GB515575A GB16785/38A GB1678538A GB515575A GB 515575 A GB515575 A GB 515575A GB 16785/38 A GB16785/38 A GB 16785/38A GB 1678538 A GB1678538 A GB 1678538A GB 515575 A GB515575 A GB 515575A
Authority
GB
United Kingdom
Prior art keywords
pinion
bevel
shaft
boss
pitch
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
GB16785/38A
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.)
Alfa Romeo SpA
Original Assignee
Alfa Romeo SpA
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 Alfa Romeo SpA filed Critical Alfa Romeo SpA
Publication of GB515575A publication Critical patent/GB515575A/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
    • B64C11/303—Blade pitch-changing mechanisms characterised by comprising a governor

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Retarders (AREA)

Abstract

515,575. Screw propellers., SOC. ANON. ALFA ROMEO. June 7, 1938, No. 16785. Convention date, June 5, 1937. [Class 114] In variable-pitch airscrews, the pitch-actuating mechanism comprises an adjustable gearing of which one sun planet is secured to the propeller boss and the other is free therein and coupled to the blade root whilst connected to this is a planet gearing of which one member normally stationary is adjustable. Upon the boss a of a propeller which is keyed to its shaft is secured a pinion f, whilst free on the boss is a pinion e having a bevel extension d which meshes with a bevel wheel c on the blade root b. Connecting these two sun wheels is a planetary system comprising pinions h, i, l and a supporting cage therefor. A central pinion o on a shaft n normally stationary is supported also in the carrier of the sun pinions. When stationary the whole system rotates so that there is no relative movement between the bevel wheel d and bevel c, but adjustment of shaft n and pinion o results in relative. movement and consequent pitch adjustment.
GB16785/38A 1937-06-05 1938-06-07 Improvements in or relating to variable pitch propellers Expired GB515575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT515575X 1937-06-05

Publications (1)

Publication Number Publication Date
GB515575A true GB515575A (en) 1939-12-08

Family

ID=11275330

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16785/38A Expired GB515575A (en) 1937-06-05 1938-06-07 Improvements in or relating to variable pitch propellers

Country Status (1)

Country Link
GB (1) GB515575A (en)

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