Method of stopping a rotorcraft engine in overspeed, and a system and a rotorcraft associated therewith
US10150569B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2015 |
| Grant date | Dec 11, 2018 |
| Priority date | — |
| Expiry date | Sep 8, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/52
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of stopping an engine of a rotorcraft in overspeed, the engine comprising a gas generator and a power assembly. When the engine is in operation, a relationship is established giving a limit derivative that varies as a function of the speed of rotation of the power assembly. The speed of rotation, referred to as the “current speed”, reached by the power assembly is measured and the time derivative of the speed of rotation is determined and referred to as the “current derivative”. The engine is stopped automatically when the limit derivative corresponding to the current speed as determined by the relationship is less than or equal to the current derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.