Abstract
This paper presents a pilot's control characteristics of an STOL aircraft operated in approach and landing using the fixed base simulator. Control method of the STOL aircraft at the speed instability condition (the backside of the speed-drag curve) in landing from 50 (m) hight are discussed. As steady state value of flight path response at the backside area has opposite sign to it at the frontside area, it is very difficult to control the STOL aircraft at such a condition for a pilot. And then, manual reverse control of a pilot is considered as one of a control method which satisfied landing of the STOL aircraft at the backside area. The results show that comparing the experimental results with the simulation, such reverse control with the quasi-linear and the bang-bang control is available method to control the STOL aircraft at the backside area.