Control system for variable pitch fan propulsor
US3932058A · kind A · utility
268Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1974 |
| Grant date | Jan 13, 1976 |
| Priority date | — |
| Expiry date | Jun 7, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02K1/66
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control for a variable pitch fan propulsor driven by a turbine type of power plant which fan is mounted in an engine bypass duct having a variable exit nozzle. The control serves to coordinate the control of fuel flow to the engine, the area of the fan exit nozzle, and the pitch of the fan blades by biasing the power lever position signal with Flight Mach No. An additional feature is the inclusion of fan surge control derived from signals of flight Mach No. and corrected free turbine speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.