Research on fuel control method of scramjet

This paper puts forward a fuel control method for scramjet test. The control method of the Kholod scramjet flight test was analyzed systematically and regarding combustor surface pressure as the controlled parameter was verified by numerical simulations. The linear mathematical equations were established by system identification and the PID controller was designed for these equations. To validate correctness of the PID controller, series of experiments and simulations were conducted. Finally, the results by the simulations and experiments show that the method introduced in this paper meets the requirement of control precision and quickness.