SYNTHESIS OF PARAMETRIC IMAGE AND CONSTRUCTIVE SCHEME OF tHE TURBOFAN ENGINE FOR Training - light COMBAT AIRplane

І.F. Kravchenko

The paper is devoted to development of the concept of the engine for training – light combat airplane parametric image synthesis. Problem’s difficulty consists in necessity to combine low mass and cost with high life-time and efficiency. To solve this problem a maximal usage of the engine-prototype units is proposed. Different variants of the basic gas generator modifications to increase its power and different variants of the fan and low pressure turbine are considered. The main used quality criteria are total mass of the powerplant and fuel, and also total cost of the engine (taking into account repair cost) and fuel consumed during total life-time. To determine a fuel consumption ten typical flight profiles are taken into account. As a result choice of the engine modification with additional HPC stage and one-stage turbine cascades is justified.

Key words: turbofan engine, training – combat airplane, parameters choice, image synthesis, optimality criterion.