GB637238A - Improvements in or relating to variable-pitch propellers - Google Patents

Improvements in or relating to variable-pitch propellers

Info

Publication number
GB637238A
GB637238A GB181447A GB181447A GB637238A GB 637238 A GB637238 A GB 637238A GB 181447 A GB181447 A GB 181447A GB 181447 A GB181447 A GB 181447A GB 637238 A GB637238 A GB 637238A
Authority
GB
United Kingdom
Prior art keywords
race
variable
blade root
bearing
flange
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
GB181447A
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.)
Rotol Ltd
Original Assignee
Rotol 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 Rotol Ltd filed Critical Rotol Ltd
Priority to GB181447A priority Critical patent/GB637238A/en
Publication of GB637238A publication Critical patent/GB637238A/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
    • B64C11/02—Hub construction
    • B64C11/04—Blade mountings
    • B64C11/06—Blade mountings for variable-pitch blades

Landscapes

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

Abstract

637,238. Variable-pitch propellers. ROTOL, Ltd., and DANVERS, E. Jan. 20, 1947, 1814. [Class 114] In a variable-pitch propeller 5 wherein each blade 6 is mounted for pitch-change movements on an anti-friction bearing 10 clamped to the blade root 18 between a shoulder 19 thereon and the flange 12 of a member 13 secured to the blade root, a race 9 of the bearing 10 is screwed directly into the hub boss 7 of the propeller and held stationary therein. The member 13 may be screwed into the blade root 18 and the flange 12 arranged to engage directly the lower race 11 of a two row tapered roller bearing 10. Relative rotation between the lower race 11 and the flange 12 and the blade root 18 may be prevented by means of tooth fastenings 14 and 22 respectively and blade movement achieved by oscillating a pin 27 secured to the lower race 11 and actuated as by a hydraulic piston and connecting rod 25. The central race 9 of the bearing may be locked in the hub boss by a tooth fastening 30, 31.
GB181447A 1947-01-20 1947-01-20 Improvements in or relating to variable-pitch propellers Expired GB637238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB181447A GB637238A (en) 1947-01-20 1947-01-20 Improvements in or relating to variable-pitch propellers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB181447A GB637238A (en) 1947-01-20 1947-01-20 Improvements in or relating to variable-pitch propellers

Publications (1)

Publication Number Publication Date
GB637238A true GB637238A (en) 1950-05-17

Family

ID=9728492

Family Applications (1)

Application Number Title Priority Date Filing Date
GB181447A Expired GB637238A (en) 1947-01-20 1947-01-20 Improvements in or relating to variable-pitch propellers

Country Status (1)

Country Link
GB (1) GB637238A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040817A (en) * 1957-04-15 1962-06-26 Rotol Ltd Variable pitch propellers
US4540341A (en) * 1983-01-17 1985-09-10 Escher Wyss Gmbh Adjustable propeller for marine vessel drive
US4630999A (en) * 1983-10-14 1986-12-23 James Howden & Company Limited Axial fan
US4844696A (en) * 1987-04-10 1989-07-04 Novenco A/S Blade angle control device for use in an axial flow fan the blades of which are adjustable during operation
GB2226604A (en) * 1988-11-24 1990-07-04 Mtu Muenchen Gmbh Blade-base attachment for a fibre rotor blade
US5015150A (en) * 1988-05-31 1991-05-14 Mtu Munchen Gmbh Arrangement for mounting a pivotable propfan blade
GB2244525A (en) * 1990-04-04 1991-12-04 Dowty Aerospace Gloucester Propeller blade hub assembly
US5263898A (en) * 1988-12-14 1993-11-23 General Electric Company Propeller blade retention system
GB2409708A (en) * 2003-11-21 2005-07-06 Roulements Soc Nouvelle Mounting a blade with a variable angle of attack

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040817A (en) * 1957-04-15 1962-06-26 Rotol Ltd Variable pitch propellers
US4540341A (en) * 1983-01-17 1985-09-10 Escher Wyss Gmbh Adjustable propeller for marine vessel drive
US4630999A (en) * 1983-10-14 1986-12-23 James Howden & Company Limited Axial fan
AU566957B2 (en) * 1983-10-14 1987-11-05 James Howden & Co. Ltd. Variable pitch fan blade mounting
US4844696A (en) * 1987-04-10 1989-07-04 Novenco A/S Blade angle control device for use in an axial flow fan the blades of which are adjustable during operation
US5015150A (en) * 1988-05-31 1991-05-14 Mtu Munchen Gmbh Arrangement for mounting a pivotable propfan blade
GB2226604A (en) * 1988-11-24 1990-07-04 Mtu Muenchen Gmbh Blade-base attachment for a fibre rotor blade
GB2226604B (en) * 1988-11-24 1992-10-21 Mtu Muenchen Gmbh The combination of a blade-base attachment and a rotor blade.
US5263898A (en) * 1988-12-14 1993-11-23 General Electric Company Propeller blade retention system
GB2244525A (en) * 1990-04-04 1991-12-04 Dowty Aerospace Gloucester Propeller blade hub assembly
GB2244525B (en) * 1990-04-04 1994-09-21 Dowty Aerospace Gloucester A propeller hub assembly
GB2409708A (en) * 2003-11-21 2005-07-06 Roulements Soc Nouvelle Mounting a blade with a variable angle of attack
GB2409708B (en) * 2003-11-21 2008-06-11 Roulements Soc Nouvelle Device for mounting a blade with a variable angle of attack

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