In order to simulate the influence of the dynamic inlet total pressure distortion on the stability of the aero-engine

the stochastic fluctuation of the pressure should be first simulated.The inlet total pressure stochastic fluctuation process was simulated on the base of the normal school and auto correlation characteristic of the inlet total pressure stochastic fluctuation

and the influence of the integral time constant

time-step and time-length on the inlet total pressure stochastic fluctuation process was analyzed.The results show that the shorter time-step and longer time-length can obtain better simulate result

but the integral time constant does not affect the simulate result.