The energy approach to flight control has shown the high efficiency. On its basis the rational structure of energy control system at landing approach was created. However, the system with constant coefficients cannot provide acceptable control quality for maneuverable high-speed aircrafts over the whole flight envelope. Therefore the adjustment of energy control system parameters needed. For this purpose the new version of a modal method of system design with the required quality has been developed. With its help the optimum system parameters for the operational area were found. The loop of coefficients adjustment according to flight condition was entered into system. Modeling has shown invariance of handling qualities in a wide range of flight conditions