GB948881A - Airscrew with automatically variable pitch, especially for light aircraft - Google Patents

Airscrew with automatically variable pitch, especially for light aircraft

Info

Publication number
GB948881A
GB948881A GB1441162A GB1441162A GB948881A GB 948881 A GB948881 A GB 948881A GB 1441162 A GB1441162 A GB 1441162A GB 1441162 A GB1441162 A GB 1441162A GB 948881 A GB948881 A GB 948881A
Authority
GB
United Kingdom
Prior art keywords
blade
axis
airscrew
blades
flight
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
GB1441162A
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.)
MICHEL ALBERT VURPILLOT
Original Assignee
MICHEL ALBERT VURPILLOT
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 MICHEL ALBERT VURPILLOT filed Critical MICHEL ALBERT VURPILLOT
Publication of GB948881A publication Critical patent/GB948881A/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
    • B64C11/32—Blade pitch-changing mechanisms mechanical
    • B64C11/34—Blade pitch-changing mechanisms mechanical automatic
    • B64C11/343—Blade pitch-changing mechanisms mechanical automatic actuated by the centrifugal force or the aerodynamic drag acting on the blades

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

948,881. Airscrews. M. A. VURPILLOT. April 13, 1962 [April 22, 1961], No. 14411/62. Heading B7V. In an airscrew with automatically variable pitch, each blade 1 pivots freely about an axis 3 which lies in a plane perpendicular to the axis of the engine shaft and which is oblique to the longitudinal central axis of the blade, the inclination D of the pivotal axis of each blade being such that, at full throttle, the engine gives its maximum admissible continuous power in the two conditions of horizontal flight at maximum speed on the one hand, and of climbing flight on the other hand. As shown in Figs. 2 and 3, at every condition of flight the forces acting on the blade are the aerodynamic traction T and the centrifugal force F, causing the blade to take up an inclination A towards the front, to which corresponds a pitch B, so as to obtain equilibrium between the forces about the axis 3. In Fig. 5, the blades 1 are fixed in sockets 7 attached by a bolt 8 (constituting the oblique pivotal axis for the blades) to lugs 6 on the hub having a flange 10 for connection to the engine shaft. Abutments may be provided to limit the displacements of the blades. The abutments limiting displacement in the direction reducing pitch may be controlled by a manumetric capsule mounted on the airscrew hub.
GB1441162A 1961-04-22 1962-04-13 Airscrew with automatically variable pitch, especially for light aircraft Expired GB948881A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR859561A FR1294945A (en) 1961-04-22 1961-04-22 Automatic variable pitch propeller intended more particularly for light aircraft

Publications (1)

Publication Number Publication Date
GB948881A true GB948881A (en) 1964-02-05

Family

ID=8753623

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1441162A Expired GB948881A (en) 1961-04-22 1962-04-13 Airscrew with automatically variable pitch, especially for light aircraft

Country Status (2)

Country Link
FR (1) FR1294945A (en)
GB (1) GB948881A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3917034A1 (en) * 1988-06-02 1989-12-14 Gen Electric PROPELLER BLADE FASTENING DEVICE
US5165856A (en) * 1988-06-02 1992-11-24 General Electric Company Fan blade mount
GB2436598A (en) * 2006-03-30 2007-10-03 Boost Energy Systems Ltd Wind turbine blade mounting
CN111776208A (en) * 2020-07-25 2020-10-16 陈维康 Aircraft, rotor head assembly thereof and control method
US10994828B2 (en) * 2017-05-08 2021-05-04 Kitty Hawk Corporation Hinged rotor blade to provide passive variable pitch

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3917034C2 (en) * 1988-06-02 1998-06-04 Gen Electric Propeller blade fastening device
GB2220990A (en) * 1988-06-02 1990-01-24 Gen Electric Aircraft engine fan blade mounting
US5102302A (en) * 1988-06-02 1992-04-07 General Electric Company Fan blade mount
GB2220990B (en) * 1988-06-02 1992-09-16 Gen Electric Aircraft engine blade mounting
US5165856A (en) * 1988-06-02 1992-11-24 General Electric Company Fan blade mount
US5354176A (en) * 1988-06-02 1994-10-11 General Electric Company Fan blade mount
DE3917034A1 (en) * 1988-06-02 1989-12-14 Gen Electric PROPELLER BLADE FASTENING DEVICE
GB2436598A (en) * 2006-03-30 2007-10-03 Boost Energy Systems Ltd Wind turbine blade mounting
US10994828B2 (en) * 2017-05-08 2021-05-04 Kitty Hawk Corporation Hinged rotor blade to provide passive variable pitch
US11498657B2 (en) 2017-05-08 2022-11-15 Kitty Hawk Corporation Hinged rotor blade to provide passive variable pitch
US11827335B2 (en) 2017-05-08 2023-11-28 Kitty Hawk Corporation Hinged rotor blade to provide passive variable pitch
CN111776208A (en) * 2020-07-25 2020-10-16 陈维康 Aircraft, rotor head assembly thereof and control method
CN111776208B (en) * 2020-07-25 2021-11-23 陈维康 Aircraft and rotor head assembly thereof

Also Published As

Publication number Publication date
FR1294945A (en) 1962-06-01

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