MODE OF APPLYING OF A HYDRAULIC DRIVE OF AN AIRCRAFT'S FLIGHT CONTROL SYSTEM Russian patent published in 2005 - IPC

FIELD: aviation technique and may used for the drive of an aircraft's flight control system in extreme conditions and emergency situations.

SUBSTANCE: mode of applying of a hydraulic drive of an aircraft's flight control system is in feeding hydraulic liquid of working pressure to the steering drives of aircraft's aerodynamic surfaces. It may be done in case of stopping of engines in flight, impossibility of launching engines and an auxiliary power plant and reducing of revolutions of the engines' autorotation below limiting meanings. The liquid is fed by one of the pumps of the hydraulic main. At that its inlet is connected with the exit of another pump of the same main and in case of further reducing of working pressure of the liquid at the exit of the pump of the main hydraulic main the liquid is fed by the pump of an emergency hydraulic main. At that the engine's rotor is connected with the auxiliary power plant's rotor. The exit of the pump of the emergency hydraulic main may be connected with the exit of the main hydraulic line and at insufficient level of available mechanical energy transferred from the aircraft's engine to the pump of the emergency hydraulic main its shaft may be connected with the shaft the electric starter of the auxiliary power plant.

EFFECT: preservation of control of an aircraft in extreme situations in the whole range of the flight's altitude and speed including zone of unguaranteed launching of an engine.

3 cl, 2 dwg