Applicable aspects of alternative UAV operation

It is made an attempt to evaluate the operational applicability expedience in case of three discrete alternatives, types of aircraft: traditional aircraft, unmanned air vehicle with avgas and electric motion propulsion having one common continuous alternative. With the use of the subjective entropy maximum principle, proposed by Professor V.A. Kasianov (National Aviation University, Kyiv, Ukraine) it is obtained the common continuous alternative preferences distribution density which together with the preferences distribution for the discrete alternatives allows making the optimal choice of the available aircraft type. Theoretical speculations are illustrated with the example calculation experiments. The necessary diagrams are plotted.