AIRCRAFT FLAPS CONTROL SYSTEM Russian patent published in 1996 - IPC

FIELD: device is designed for short take-off aeroplanes whose lift force is increased due to blowing flaps with jet of gas from operating engine and provides for control of flaps in servo mode from electronic control system and monitoring engine in synchronism to avoid change in lift force in case of change in engine thrust and monitoring them differentially to compensate for loss of lift force and rolling moment in case of failure of engine at take-off or landing, as well as control of flaps from control-wheel column. SUBSTANCE: system has setting portion which includes control stick 1 and distributing device control system and actuating portion which includes hydraulic boosters for deflection of section 14 of flaps made in form of hydraulic cylinders 13, distributing devices 15 mounted separately and mechanical feedback linkages 19 which connect each section 14 of flaps with respective distributing devices and mechanical linkages 23 for synchronization of motion of input members of distributing devices of symmetrical sections of flaps. Setting portion is multi-channel electrical remote control system with one self-regulated independent channel per section of flap including control stick position sensors 3, redundant mechanical linkage 2 which is used to connect control stick 1 with sensors 3, digital units 4 and electromechanical servo actuators 7 provided with electric brakes of output member. Inputs of digital units 4 are connected with sensor 3 and 5 of control stick 1 and control-wheel column 6 with air navigation computer system 10, altitude and speed signal system 11 and electronic control and engine monitoring system 12. Included in actuating portion of system in synchronization linkage 23 of motion of input members of distributing devices 15 are uncoupling spring 24 with preliminary tightening; uncoupling spring 20 and 21 are included in each feedback linkage 19 and in connection of these two linkages; springs are provided with limit switches 22. EFFECT: enhanced reliability. 1 dwg