Patent ID: 9022318
Filing Date: 2015-05-05
Classification: B64D,F01D,F02C,F05D

Abstract:
1. An aircraft, comprising: a first and a second engine, an aircraft system, a fail-safe hydraulic supply device being driven by the engines and comprising a first and a second hydraulic system for operating actuators of the aircraft system and a monitoring and drive device for controlling the hydraulic supply device, the hydraulic supply device including: a first hydraulic drive that is coupled to a gear drive shaft of the first engine, the first hydraulic drive comprising: a second hydraulic drive coupled to a second gear drive shaft of the second engine and the second hydraulic drive comprises: the monitoring and drive device which respectively is coupled with the clutch coupling device and the monitoring and drive device based on a signal from a flight control function that indicates a cruising operating state outputs a command signal to switch off one of the first hydraulic pump and the second hydraulic pump of the first hydraulic drive and to switch off one of the first hydraulic pump and the second hydraulic pump of the second hydraulic drive, wherein the command signal switches off one of the first hydraulic pump and the second hydraulic pump coupled to the gear drive shaft of the first engine and one of the first hydraulic pump and the second hydraulic pump coupled to the gear drive shaft of the second engine.