System and method for assisting in rotor speed control
US9821908B2 · kind B2 · utility
13Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2014 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Apr 23, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0858
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method of assisting in rotor speed control in a rotorcraft can include measuring a rotor speed with a sensor; detecting a droop in the rotor speed beyond a lower droop limit; and commanding a decrease in collective in response to the rotor speed drooping beyond the lower droop limit. A system of assisting in rotor speed control in a rotorcraft, the system can include: a computer having a control law, the control law operable to generate a decrease collective command to an actuator in response to a rotor speed decreasing below a lower droop limit; wherein the lower droop limit is below a normal lower rotor speed range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.