Pitch control apparatus for variable pitch propeller
US5209640A · kind A · utility
49Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1990 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Dec 28, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C11/40
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A pitch control apparatus for a variable pitch propeller for drive connection to an aircraft engine, wherein an optimum rotation number of the engine is calculated in relation to a flight speed of the aircraft, an opening degree of the engine throttle and the density of atmospheric air in flight of the aircraft to maximize a thurst force acting on the aircraft, and wherein a pitch angle of the propeller blade is controlled in such a manner that the rotation number of the engine becomes substantially equal to the optimum rotation number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.