Optimization of downstream open fan propeller position and placement of acoustic sensors
US9637221B2 · kind B2 · utility
2Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2013 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Feb 8, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D27/026
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for controlling a propeller of a contra-rotation open fan (CROF) engine of an aircraft is provided. A diameter of the propeller is set to be at a first diameter during at least a portion of a first flight condition of the aircraft. The diameter of the propeller is set to be at a second diameter, different from the first diameter, during at least a portion of a second flight condition of the aircraft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.