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GB718127A - Improvements in or relating to variable pitch propellers - Google Patents

Improvements in or relating to variable pitch propellers

Info

Publication number
GB718127A
GB718127A GB2136/52A GB213652A GB718127A GB 718127 A GB718127 A GB 718127A GB 2136/52 A GB2136/52 A GB 2136/52A GB 213652 A GB213652 A GB 213652A GB 718127 A GB718127 A GB 718127A
Authority
GB
United Kingdom
Prior art keywords
bearing
axis
blade
secured
sleeve
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
GB2136/52A
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
Publication of GB718127A publication Critical patent/GB718127A/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
    • 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
    • B64C11/32—Blade pitch-changing mechanisms mechanical
    • B64C11/36—Blade pitch-changing mechanisms mechanical non-automatic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0224—Adjusting blade pitch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/74—Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/79—Bearing, support or actuation arrangements therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Support Of The Bearing (AREA)
  • Wind Motors (AREA)

Abstract

718,127. Wind motors; axial-flow pumps and compressors. TERZI. P. Jan. 25, 1952 [Feb. 1, 1951], No. 2136/52. Classes 110(1) and 110(3) [Also in Group XXXIII] An axial-flow pump, compressor, or windmill rotor of the type in which the pitch of the blades is self regulating by the action of natural forces, has each blade rotatabty mounted within a bearing 11, 12 whose outer ring 10 is secured in a radial sleeve 3 on the propeller hub 1, adjusting means being provided for varying the axis O-A of the bearing with respect to the axis Z-Z of the sleeve and also for varying the angle # between the bearing axis OA and the blade axis R-R, and locking means being provided for locking the adjusting means in a desired position. The outer race 10 of a double taper-roller bearing has a spherical surface 18. engaging a corresponding surface 19 in the sleeve 3 and is secured in position by an annular screw 22 through an annular adjusting element 21 which has oblique end surfaces and engages an annular shoulder 20 on the outer race. Rotation of the element 21 in the sleeve adjusts the inclination of the bearing axis. The inner race 9 of the bearing is mounted on a spherical seating 8 secured to a socket 5 screwed on the blade root 4 and is secured in position thereon by an annular screw 27 through annular adjusting rings 23-26 each of which has oblique end surfaces. Relative rotation of the adjusting rings adjusts the inclination of the blade axis with respect to the bearing axis. The rotation of the blade about the bearing axis, which is effected by natural forces, is limited by adjustable stops such as 33 secured respectively to the bearing race 10 and the blade hub.
GB2136/52A 1951-02-01 1952-01-25 Improvements in or relating to variable pitch propellers Expired GB718127A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT718127X 1951-02-01

Publications (1)

Publication Number Publication Date
GB718127A true GB718127A (en) 1954-11-10

Family

ID=11314908

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2136/52A Expired GB718127A (en) 1951-02-01 1952-01-25 Improvements in or relating to variable pitch propellers

Country Status (1)

Country Link
GB (1) GB718127A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0009052A1 (en) * 1978-08-17 1980-04-02 Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung Aerodynamically self-governed wind turbine
GB2214989A (en) * 1988-02-11 1989-09-13 Albert Denis Laurence Mounting blades on rotors
GB2244525A (en) * 1990-04-04 1991-12-04 Dowty Aerospace Gloucester Propeller blade hub assembly
GB2271392A (en) * 1992-10-08 1994-04-13 Dowty Aerospace Gloucester Variable pitch propeller blade mounting.
WO2022018359A1 (en) * 2020-07-24 2022-01-27 Safran Aircraft Engines Aircraft turbine engine comprising variable-pitch propeller blades
FR3121477A1 (en) * 2021-03-30 2022-10-07 Safran Aircraft Engines AIRCRAFT TURBOMACHINE WITH VARIABLE-PITCHED PROPELLER BLADE
US20230294817A1 (en) * 2020-07-24 2023-09-21 Safran Aircraft Engines Aircraft turbine engine comprising variable-pitch propeller vanes

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0009052A1 (en) * 1978-08-17 1980-04-02 Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung Aerodynamically self-governed wind turbine
GB2214989A (en) * 1988-02-11 1989-09-13 Albert Denis Laurence Mounting blades on rotors
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
GB2271392A (en) * 1992-10-08 1994-04-13 Dowty Aerospace Gloucester Variable pitch propeller blade mounting.
GB2271392B (en) * 1992-10-08 1996-11-20 Dowty Aerospace Gloucester A propeller assembly
WO2022018359A1 (en) * 2020-07-24 2022-01-27 Safran Aircraft Engines Aircraft turbine engine comprising variable-pitch propeller blades
US20230294817A1 (en) * 2020-07-24 2023-09-21 Safran Aircraft Engines Aircraft turbine engine comprising variable-pitch propeller vanes
US11993365B2 (en) 2020-07-24 2024-05-28 Safran Aircraft Engines Aircraft turbine engine comprising variable-pitch propeller blades
US12491987B2 (en) * 2020-07-24 2025-12-09 Safran Aircraft Engines Aircraft turbine engine comprising variable-pitch propeller vanes
FR3121477A1 (en) * 2021-03-30 2022-10-07 Safran Aircraft Engines AIRCRAFT TURBOMACHINE WITH VARIABLE-PITCHED PROPELLER BLADE

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