GB883847A - Mechanical low pitch stop of a variable-pitch propeller - Google Patents
Mechanical low pitch stop of a variable-pitch propellerInfo
- Publication number
- GB883847A GB883847A GB17525/60A GB1752560A GB883847A GB 883847 A GB883847 A GB 883847A GB 17525/60 A GB17525/60 A GB 17525/60A GB 1752560 A GB1752560 A GB 1752560A GB 883847 A GB883847 A GB 883847A
- Authority
- GB
- United Kingdom
- Prior art keywords
- annulus
- jaws
- pitch
- blades
- propeller
- 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
- B64C11/325—Blade pitch-changing mechanisms mechanical comprising feathering, braking or stopping systems
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
883,847. Variable pitch propellers. GENERAL MOTORS CORPORATION. May 18, 1960 [June 17, 1959], No. 17525/60. Class 114. A mechanical low pitch stop assembly of variable pitch propeller includes a master gear 18 rotatably supported within the hub 10 and meshing with bevel gear sectors 16 on the propeller blades 14 so as to rotate about the propeller axis during pitch changing movement of the blades, a first annulus 30 attached to said gear 18 via a splined sleeve 26, a second annulus 48 splined at 50 to a housing 22 secured to the hub 10 so as to be restrained against rotation relative to the hub but capable of axial movement relative thereto, the two annuli having circumferentially spaced axially extending jaws with engageable faces, the jaws 32 of one annulus having caged rollers in their faces, and springs 64 engaging the second annulus 48 for maintaining it in engagement with the first annulus 30 to prevent rotation of the latter and movements of the blades below a predetermined pitch angle, the second annulus 48 having a piston surface 58 which can be subjected to hydraulic pressure in a space 74 for moving said annulus 48 out of engagemen with the first annulus 30 to permit rotation o the latter and movement of the blades below the predetermined pitch angle, the caged roller facilitating disengagement of the jaws of th annuli under load without damaging th faces of the jaws.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US883847XA | 1959-06-17 | 1959-06-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB883847A true GB883847A (en) | 1961-12-06 |
Family
ID=22211069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17525/60A Expired GB883847A (en) | 1959-06-17 | 1960-05-18 | Mechanical low pitch stop of a variable-pitch propeller |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB883847A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3970410A (en) * | 1973-04-18 | 1976-07-20 | Dowty Rotol Limited | Rotary actuators suitable for bladed rotors |
US3976397A (en) * | 1973-04-18 | 1976-08-24 | Dowty Rotol Limited | Rotary actuators suitable for bladed rotors |
CN107472514A (en) * | 2017-09-20 | 2017-12-15 | 上海歌尔泰克机器人有限公司 | Variable-pitch propeller and unmanned plane |
-
1960
- 1960-05-18 GB GB17525/60A patent/GB883847A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3970410A (en) * | 1973-04-18 | 1976-07-20 | Dowty Rotol Limited | Rotary actuators suitable for bladed rotors |
US3976397A (en) * | 1973-04-18 | 1976-08-24 | Dowty Rotol Limited | Rotary actuators suitable for bladed rotors |
CN107472514A (en) * | 2017-09-20 | 2017-12-15 | 上海歌尔泰克机器人有限公司 | Variable-pitch propeller and unmanned plane |
CN107472514B (en) * | 2017-09-20 | 2024-03-08 | 上海歌尔泰克机器人有限公司 | Variable pitch propeller and unmanned aerial vehicle |
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