System for confirming shutdown of an aircraft engine
US11486318B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2021 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | May 11, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B9/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
To control an engine shutdown in an aircraft, a control system includes a fuel supply shut-off member, a control member with a set of switches, a first switch on an electrical power supply link of the fuel supply shut-off member and second switches connected to avionics of the aircraft, the set of switches switching position on an engine shutdown command. An engine shutdown confirmation unit includes a third switch on the electrical power supply link, the third switch in open position by default. The engine shutdown confirmation unit includes electronic circuitry configured to switch the third switch over to closed position when a predefined quantity Q of switches of the control member switches position within a sliding window of predefined duration and, otherwise, keeps the third switch in open position. Thus, it is ensured that the engine shutdown is intentional.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.