System und Verfahren zum Betrieb eines Mehrmotorsystems

Details

Veröffentlichungs-Nr.

EP4775825

Anmeldetag

2. Dezember 2022

Veröffentlichung

15. Juli 2026

Rechtsraum

EP

IPC

F02C9/42

Abstract

A method of operating a multi-engine system of an helicopter includes the multi-engine system having a first turboshaft engine having a first shaft, a second turboshaft engine having a second shaft, a gearbox having a clutch system (152), and a range of rotation speeds defined as a placarded zone. The method includes: rotating the first and second shafts at a first idle rotation speed (NL<LI>) below the placarded zone when clutched to a load; increasing a rotation speed of the first shaft from the first idle rotation speed (NL<LI>) to a flight rotation speed (NL<F>) above the placarded zone; unclutching the second shaft from the load during the increasing; and increasing a rotation speed of the second shaft to a second idle rotation speed (NL<HI>) when the second shaft is unclutched from the load, the second idle rotation speed (NL<HI>) above the placarded zone and below the flight rotation speed (NL<F>).

Anmelder

Firma

Pratt & Whitney Canada Corp.

Land

🇨🇦 Kanada

Fachgebiete