MANUAL CONTROL SYSTEM OF TRAINER AEROPLANE Russian patent published in 1997 - IPC

FIELD: control systems of flying vehicles. SUBSTANCE: manual control system includes control sticks of instructor pilot and student pilot provided in longitudinal control channel and rigidly interconnected; these control sticks are kinematically linked with variable gearing mechanism, elevator hydraulic drive, spring-type loading mechanism and trimming effect mechanism which is electrically connected with trimming buttons found in each control stick. Manual control system is additionally provided with stability and controllability characteristics reprogramming computer, electrohydraulic loading mechanism containing electric drive for shifting the control sticks, force sensors fitted on these sticks and monitoring and control unit whose input is electrically connected with force sensors, trimming buttons and computer of stability and controllability characteristics reprogramming and its output is connected with electrohydraulic drive and trimming effect mechanism; besides that, system is provided with second electrohydraulic drive which is electrically connected with reprogramming computer and is kinematically linked with spring centering its outlet rod and differentiating bell crank arranged between variable gearing mechanism and elevator hydraulic drive. Control stick of instructor pilot is provided with two selector switches having two make-before-break contact pairs each. One selector switch is connected with force sensor and trimming button of trainer pilot control stick; second selector switch is connected with hydraulic valves of respective electrohydraulic drives and its own trimming button. EFFECT: extended functional capabilities. 2 cl, 2 dwg