GB134258A - Improvements in and relating to the Control of Variable Pitch Propellers. - Google Patents
Improvements in and relating to the Control of Variable Pitch Propellers.Info
- Publication number
- GB134258A GB134258A GB1411218A GB1411218A GB134258A GB 134258 A GB134258 A GB 134258A GB 1411218 A GB1411218 A GB 1411218A GB 1411218 A GB1411218 A GB 1411218A GB 134258 A GB134258 A GB 134258A
- Authority
- GB
- United Kingdom
- Prior art keywords
- propeller
- piston
- pump
- aeroplane
- oil
- 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
- B64C11/303—Blade pitch-changing mechanisms characterised by comprising a governor
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
134,258. Salmon, P., and Smith, W. S. Aug. 30, 1918. Apparatus.-Relates to an automatic control for propellers of variable pitch. An oil or other fluid pump a is driven by an auxiliary propeller b and is adapted to force liquid through the passage h<2> into the space c' so as to move the piston d against the action of the spring g. The piston rod e is attached to the cross-head f, which is connected by links to the blades of the main propeller of an aeroplane. When the engine is started on the ground, the auxiliary propeller b remains stationary and the pump rotates on its spindle, a comparatively small amount of oil being pumped to the space c'. When the aeroplane moves forward, the air rotates the propeller b in the opposite direction to the main propeller, the boss of which carries the body of the apparatus. The delivery of the pump is increased and the piston d moves further to the left and regulates the pitch of the propeller blades. An independent or finer adjustment of the propeller may be made by hand. The valve i controls the flow through the ports k<2>, k<1> from one side of the piston to the other, and consequently the position of the piston. The valve i may be adjusted by a fork-and-sleeve device l operated by the pilot. The by-pass may also be automatically controlled by a centrifugal governor m, n.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1411218A GB134258A (en) | 1918-08-30 | 1918-08-30 | Improvements in and relating to the Control of Variable Pitch Propellers. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1411218A GB134258A (en) | 1918-08-30 | 1918-08-30 | Improvements in and relating to the Control of Variable Pitch Propellers. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB134258A true GB134258A (en) | 1919-10-30 |
Family
ID=32408689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1411218A Expired GB134258A (en) | 1918-08-30 | 1918-08-30 | Improvements in and relating to the Control of Variable Pitch Propellers. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB134258A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2422966A (en) * | 1941-03-14 | 1947-06-24 | Hoover Walter Scott | Propeller control |
| US2549108A (en) * | 1943-12-29 | 1951-04-17 | United Aircraft Corp | Propeller pitch control |
| US2625998A (en) * | 1946-06-08 | 1953-01-20 | Gen Motors Corp | Propeller mechanism |
-
1918
- 1918-08-30 GB GB1411218A patent/GB134258A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2422966A (en) * | 1941-03-14 | 1947-06-24 | Hoover Walter Scott | Propeller control |
| US2549108A (en) * | 1943-12-29 | 1951-04-17 | United Aircraft Corp | Propeller pitch control |
| US2625998A (en) * | 1946-06-08 | 1953-01-20 | Gen Motors Corp | Propeller mechanism |
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