Emergency collective actuator and method for a helicopter
US8360369B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2010 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Jun 25, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/57
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A helicopter includes a rotor system having a rotor with an adjustable pitch that is controlled at least in part by a pilot using a collective control and which helicopter generates a Low RPM signal that is indicative of a threshold low rotational speed of the rotor. An actuator arrangement configured to move the collective control by exerting a force on the collective control such that the pilot is able to overcome the force but which otherwise moves the collective control from a current operational position toward a minimum pitch position. A control arrangement is configured for receiving the Low RPM signal and for responding to the Low RPM signal by activating the actuator arrangement for at least a predetermined period of time to apply the force to move the collective control from the current operational position to the minimum pitch position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.