GB593736A - Accumulator pressure propeller blade actuating mechanism - Google Patents
Accumulator pressure propeller blade actuating mechanismInfo
- Publication number
- GB593736A GB593736A GB221944A GB221944A GB593736A GB 593736 A GB593736 A GB 593736A GB 221944 A GB221944 A GB 221944A GB 221944 A GB221944 A GB 221944A GB 593736 A GB593736 A GB 593736A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pump
- lever
- piston
- space
- fluid
- 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
- B64C11/42—Blade pitch-changing mechanisms fluid, e.g. hydraulic non-automatic
Landscapes
- Rotary Pumps (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
593,736. Fluid-pressure servomotorcontrol systems. HOOVER, W. S. Feb. 7, 1944, No. 2219. [Class 135] [Also in Groups XXVI and XXXIII] A pitch adjusting mechanism for an air screw comprises a pump 37 as described in. Specification 567,710 that draws fluid from the space 24 through port 34 and delivers through port 39 to an accumulator comprising a piston 40 loaded by a spring 41. When the pressure fully depresses the piston 40, a rod 42 carried by the piston closes the suction port 34 at 43 and allows the pump to run idly. The pump is slidable axially under the influence of the centrifugal governor 50 and is shaped to act as a control valve to connect the accumulator and its own pressure space to either ports 60, 61 connected to rotary vane power devices attached to the roots of the blades 7 ; the blades are interconnected by gearing to maintain synchronism. The space 24 may be filled with fluid through the plug hole 23 or may be supplied from the engine pump 30 through ports 32, 28, 27 and tube 25 within the shaft 13. The governor spring is enclosed in an abutment casing 48a that is adjustable by the rotation of an inclined cam ring 49a that is geared with teeth on a lever 49b. The lever 49b is connected to lever 50<1> which, when moved to its extreme positions for feathering &c., also makes contacts 52, 53 to energize a motor 51 geared to the outer casing of the pump. Specifications 557,906, [Group XXXIII], and 563,008 also are referred to.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB593736A true GB593736A (en) | 1947-10-24 |
Family
ID=1627193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB221944A Expired GB593736A (en) | 1944-02-07 | Accumulator pressure propeller blade actuating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB593736A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2666490A (en) * | 1950-05-03 | 1954-01-19 | United Aircraft Corp | Auxiliary drive for propeller pitch control |
-
1944
- 1944-02-07 GB GB221944A patent/GB593736A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2666490A (en) * | 1950-05-03 | 1954-01-19 | United Aircraft Corp | Auxiliary drive for propeller pitch control |
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