GB688170A - Improvements in or relating to variable pitch propellers - Google Patents
Improvements in or relating to variable pitch propellersInfo
- Publication number
- GB688170A GB688170A GB4214/51A GB421451A GB688170A GB 688170 A GB688170 A GB 688170A GB 4214/51 A GB4214/51 A GB 4214/51A GB 421451 A GB421451 A GB 421451A GB 688170 A GB688170 A GB 688170A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- reservoir
- pitch
- variable pitch
- relating
- 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
- 239000012530 fluid Substances 0.000 abstract 2
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
- B64C11/42—Blade pitch-changing mechanisms fluid, e.g. hydraulic non-automatic
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Control Of Fluid Gearings (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
688,170. Variable pitch propellers. UNITED AIRCRAFT CORPORATION. Feb. 21, 1951. [April 8, 1950] No. 4214/51. Class 114. The hydraulic fluid for operating the pitch varying motors is contained in a reservoir 40 formed by members 34, 36 integral with and surrounding the blade sockets 32. The reservoir is closed by a plate 50 in which are carried main and auxiliary operating pumps, the control valve 90 and the pressure relief valve. Outside this plate, and enclosed by a plate 69 is a second, low pressure reservoir 68. The fluid supply to the pitch varying motors enters the blades through a transfer screw 170 as described in Specification 688,169. Pitch lock devices are fitted as described in Specifications 683,729 and 683,786.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US688170XA | 1950-04-08 | 1950-04-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB688170A true GB688170A (en) | 1953-02-25 |
Family
ID=22084875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4214/51A Expired GB688170A (en) | 1950-04-08 | 1951-02-21 | Improvements in or relating to variable pitch propellers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB688170A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7997074B2 (en) | 2009-07-10 | 2011-08-16 | Vestas Wind Systems A/S | Hydraulic station and method for controlling pressure in a hydraulic system of a wind turbine |
| US8123304B2 (en) | 2009-06-16 | 2012-02-28 | Vestas Wind Systems A/S | Hydraulic system and method for operating a brake of a wind turbine |
-
1951
- 1951-02-21 GB GB4214/51A patent/GB688170A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8123304B2 (en) | 2009-06-16 | 2012-02-28 | Vestas Wind Systems A/S | Hydraulic system and method for operating a brake of a wind turbine |
| US7997074B2 (en) | 2009-07-10 | 2011-08-16 | Vestas Wind Systems A/S | Hydraulic station and method for controlling pressure in a hydraulic system of a wind turbine |
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