GB485102A - Improvements in variable-pitch airscrews for aircraft - Google Patents

Improvements in variable-pitch airscrews for aircraft

Info

Publication number
GB485102A
GB485102A GB31074/36A GB3107436A GB485102A GB 485102 A GB485102 A GB 485102A GB 31074/36 A GB31074/36 A GB 31074/36A GB 3107436 A GB3107436 A GB 3107436A GB 485102 A GB485102 A GB 485102A
Authority
GB
United Kingdom
Prior art keywords
race
sleeve
held
variable
root
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
GB31074/36A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB31074/36A priority Critical patent/GB485102A/en
Publication of GB485102A publication Critical patent/GB485102A/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
    • B64C11/008—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft characterised by vibration absorbing or balancing means
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • F16C25/08—Ball or roller bearings self-adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/30—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/43—Aeroplanes; Helicopters

Abstract

485,102. Variable - pitch screw propellors. EVANS, A. F., and WELLS, R. G. Nov. 13, 1936, No. 31074. [Class 114] Each blade root of a variable-pitch air screw has an external projection carrying a roller thrust bearing, and between this and an internal projection on the hub socket is disposed a compression spring or like resilient load carrier. Blade 10 has at its root a sleeve 11 and formed integrally therewith is a projection 14 carrying one race 15 of the conical rollers 16, the other race 17 being held by the internal collar 18 through the intermediary of spring washers 29, 30. The sleeve 11 has also another flange 21 near its root which supports the race 22 of the conical rollers 23, the other race 24 being held by the flange of a sleeve 25. The axes of the conical rollers 16, 23 make angles of 60‹ and 45‹ respectively with and meet at a common point P on the axis XX. Between a ring 30 and a collar 18 is provided a metal plate 31 curved so as to enclose the rubber packing washer 32 which engages a cylindrical portion of the sleeve 11 in an oil-tight manner. Large cavities in the assembly are filled in with cork blocks 33 held in place by wire 34 and a cork ring 35 is inserted beneath the rubber packing ring 32. Specification 480,747 is referred to.
GB31074/36A 1936-11-13 1936-11-13 Improvements in variable-pitch airscrews for aircraft Expired GB485102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB31074/36A GB485102A (en) 1936-11-13 1936-11-13 Improvements in variable-pitch airscrews for aircraft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB31074/36A GB485102A (en) 1936-11-13 1936-11-13 Improvements in variable-pitch airscrews for aircraft

Publications (1)

Publication Number Publication Date
GB485102A true GB485102A (en) 1938-05-13

Family

ID=10317564

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31074/36A Expired GB485102A (en) 1936-11-13 1936-11-13 Improvements in variable-pitch airscrews for aircraft

Country Status (1)

Country Link
GB (1) GB485102A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436612A (en) * 1942-10-28 1948-02-24 Curtiss Wright Corp Sealed propeller hub arrangement
US2515996A (en) * 1942-04-29 1950-07-18 Everel Propeller Corp Propeller blade mounting
US2528236A (en) * 1943-10-30 1950-10-31 Evercl Propeller Corp Aircraft propulsion unit
US2955660A (en) * 1958-01-23 1960-10-11 Pacific Car & Foundry Co Method and apparatus for preserving rotor balance in cycloidal propellers
US3392789A (en) * 1965-10-28 1968-07-16 Svenska Flaektfabriken Ab Sealing element
US4762466A (en) * 1986-10-22 1988-08-09 Societe Nationale D'etude Et De Construction De Moteurs D'aviation (Snecma) Carrier ring for a propeller blade system
GB2226087A (en) * 1988-12-14 1990-06-20 Gen Electric Propeller blade mounting arrangement
GB2234299A (en) * 1989-07-06 1991-01-30 Rolls Royce Plc Support arrangement for nozzle guide vane
GB2244525A (en) * 1990-04-04 1991-12-04 Dowty Aerospace Gloucester Propeller blade hub assembly
FR2873348A1 (en) * 2004-07-26 2006-01-27 Ratier Figeac Soc DEVICE FOR MOUNTING BLADES ON PROPELLER HUB, WITH BEARING PRELOAD
JP2011111160A (en) * 2009-11-27 2011-06-09 Ge Aviation Systems Ltd Pre-load propeller blade assembly

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515996A (en) * 1942-04-29 1950-07-18 Everel Propeller Corp Propeller blade mounting
US2436612A (en) * 1942-10-28 1948-02-24 Curtiss Wright Corp Sealed propeller hub arrangement
US2528236A (en) * 1943-10-30 1950-10-31 Evercl Propeller Corp Aircraft propulsion unit
US2955660A (en) * 1958-01-23 1960-10-11 Pacific Car & Foundry Co Method and apparatus for preserving rotor balance in cycloidal propellers
US3392789A (en) * 1965-10-28 1968-07-16 Svenska Flaektfabriken Ab Sealing element
US4762466A (en) * 1986-10-22 1988-08-09 Societe Nationale D'etude Et De Construction De Moteurs D'aviation (Snecma) Carrier ring for a propeller blade system
GB2226087A (en) * 1988-12-14 1990-06-20 Gen Electric Propeller blade mounting arrangement
GB2234299A (en) * 1989-07-06 1991-01-30 Rolls Royce Plc Support arrangement for nozzle guide vane
US5078576A (en) * 1989-07-06 1992-01-07 Rolls-Royce Plc Mounting system for engine components having dissimilar coefficients of thermal expansion
GB2234299B (en) * 1989-07-06 1994-01-05 Rolls Royce Plc Mounting system for engine components having dissimilar coefficients of thermal expansion
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
FR2873348A1 (en) * 2004-07-26 2006-01-27 Ratier Figeac Soc DEVICE FOR MOUNTING BLADES ON PROPELLER HUB, WITH BEARING PRELOAD
US7192255B2 (en) 2004-07-26 2007-03-20 Ratier-Figeac Device for mounting blades on a propeller hub with preloading of the bearings
JP2011111160A (en) * 2009-11-27 2011-06-09 Ge Aviation Systems Ltd Pre-load propeller blade assembly

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