Range maximizing, stable, helicopter cruise fuel conservation
US5023797A · kind A · utility
4Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1990 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | Sep 20, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0005
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The reference speed for a helicopter engine is incremented or decremented (237, 239) in dependence upon whether a specific range (miles per unit of fuel) has increased or decreased (236a) in a current period of time compared to the next preceding period of time, separated therefrom by at least 20 seconds (243, 244) to thereby set engine speed for minimizing use of fuel over distance traveled. Fuel is sampled only during steady flight (250-255).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.