Method of stopping a rotorcraft engine in overspeed, and a system and a rotorcraft associated therewith
US10047678B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2015 |
| Grant date | Aug 14, 2018 |
| Priority date | — |
| Expiry date | Jul 14, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/335
- 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, the engine is automatically stopped when the following three conditions are satisfied simultaneously: a torque (Tq) measured on the power assembly is below a predetermined torque threshold (Tq1); and a speed of rotation referred to as a “first speed of rotation (N1)” of the gas generator is above a threshold referred to as a “first speed threshold (S1)”; and a speed of rotation referred to as a “second speed of rotation (N2)” of the power assembly is above a threshold referred to as a “second speed threshold (S2)”.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.