GB948881A - Airscrew with automatically variable pitch, especially for light aircraft - Google Patents
Airscrew with automatically variable pitch, especially for light aircraftInfo
- 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
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.
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)
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 |
-
1961
- 1961-04-22 FR FR859561A patent/FR1294945A/en not_active Expired
-
1962
- 1962-04-13 GB GB1441162A patent/GB948881A/en not_active Expired
Cited By (13)
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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