Method and a device for protecting an overspeeding rotorcraft engine
US9522740B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2014 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | Jun 12, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of stopping an overspeeding engine (4) of a rotorcraft (1). A protection device stops the overspeeding engine (4) on condition of a comparison between a mechanical power requirement (19) of the rotorcraft (1) and a predefined power threshold (22). Stopping of the overspeeding engine (4) is authorized by the protection device (8) on condition that said mechanical power requirement (19) is identified as being less than or equal to the predefined power threshold (22). The mechanical power requirement (19) of the rotorcraft (1) is calculated on the basis of at least one current or anticipated value for the opposing torque (15) of a main rotor (5) of the rotorcraft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.