Parameter analysis of nonlinear combustion instability based on T-burner

Based on the pulsing trigger T-burner technique, some results were obtained on the relationship between the DC Shift, the initial limit amplitude and the pressure coupled response function. The result shows that, the propellant combustion has a great influence on the DC Shift and the initial limit amplitude. Also, the propellant with different formulations has a great influence on the DC Shift, which means that the higher the pressure response functions, the bigger DC Shift produced by the propellant burning would be. For nonlinear instability, there is a certain coupling relationship between the pressure response function of the propellant, the initial limit amplitude and the DC Shift, and the results are consistent with the theory of Flandro.