Choice of optimum parameters for operation process and the approach to thermal calculation of aircraft piston engines technique in the aircraft system

At the initial designing optimum variant of engines is determined of its operation process. In the research there is substantiation of a parameters choice – power of pressure up and power of temperature up , which determine the operation process of aircraft piston engines. the approach to thermal calculation of aircraft piston engines technique is specified and there the software realizing automated initial designing of piston engines is described.