... propeller to provide the thrust. Both of them disturb the flow around the gyroplane body (gyroplane fuselage and tail) and influence on its static stability. The main goal of the presented research was to find the magnitude of this influence. To measure this effect, the main stability derivatives changes...

... because values of stability and control derivatives do not change even if the centre of gravity is travelling. The most important dimensionless stability derivatives are defined and listed later. It will be possible in part 3 and 4 of this paper to assess the numerical values for two selected aircraft...