GB594396A - Improvements in or relating to blade adjusting means for controllable pitch propellers - Google Patents
Improvements in or relating to blade adjusting means for controllable pitch propellersInfo
- Publication number
- GB594396A GB594396A GB282/43A GB28243A GB594396A GB 594396 A GB594396 A GB 594396A GB 282/43 A GB282/43 A GB 282/43A GB 28243 A GB28243 A GB 28243A GB 594396 A GB594396 A GB 594396A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pitch
- blades
- gear
- stops
- annular
- 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
- B64C11/38—Blade pitch-changing mechanisms fluid, e.g. hydraulic
- B64C11/385—Blade pitch-changing mechanisms fluid, e.g. hydraulic comprising feathering, braking or stopping systems
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
594,396. Variable - pitch propellers. UNITED AIRCRAFT CORPORATION. Jan. 6, 1943, No. 282. Convention date, Oct. 17, 1940. [Class 114] In a variable-pitch propeller the pitch of all the blades is changed simultaneously by an annular rotatable member having means for adjustably connecting it to each of a number of concentric arcuate sectional members connected to the blades so that the pitch angles of the blades can be adjusted with respect to each other. In the form shown, a gear element 22 on the root of each blade 12 meshes with one section of a gear 26 which is common to all the blades and has its sections slightly spaced apart. The gear 26 is rotatably supported in a bearing 28 which is retained against axial movement by a pair of annular pitch limit stops 34, 36 which are splined at 70 into the hub 10, a hub closure member 38 and a nut 40. The assembly also includes an annular member 44 with an enlarged portion 48 within the stops 34, 36, and a reduced portion 46 between the shaft 16 and a reduced portion 53 of the gear 26. The inner and outer surfaces of the portions 53, 46 are serrated to receive connecting elements 52, 54, 56 which are serrated on both sides in such a manner as to provide a vernier adjustment of each of them. The portion 48 of the member 44 has lugs 58, 60, 62, 64 which co-operate with lugs 66, 68 on the stops 34, 36 to positively limit the pitch-changing movements. The latter may be effected by means of a hydraulic vane motor, or by means of a cam operated by a single electric or hydraulic motor as described in Specifications 505,077, 505,168 and 505,169.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US594396XA | 1940-10-17 | 1940-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB594396A true GB594396A (en) | 1947-11-11 |
Family
ID=22022952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB282/43A Expired GB594396A (en) | 1940-10-17 | 1943-01-06 | Improvements in or relating to blade adjusting means for controllable pitch propellers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB594396A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1900634A1 (en) * | 2006-09-15 | 2008-03-19 | Yellowfin Limited | Marine propulsion and constructional details thereof |
-
1943
- 1943-01-06 GB GB282/43A patent/GB594396A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1900634A1 (en) * | 2006-09-15 | 2008-03-19 | Yellowfin Limited | Marine propulsion and constructional details thereof |
| WO2008032121A3 (en) * | 2006-09-15 | 2009-05-22 | Yellowfin Ltd | Marine propulsion and constructional details thereof |
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