Numerical simulation of deceleration performance of ejection seat

Deceleration performance is an important performance of ejection seat, whose evaluation is coarse till now and can be estimated, only according to the ground ejection experiment or experience. In this paper a numerical simulation approach based on CFD and matlab simulink, is presented to simulate the ejection process of ejection seat and achieving its deceleration performance. The 6 degree of freedom (6DOF) equations are solved after achieving the aerodynamic coefficients of ejection seat. The average difference of the results compared with the experiment data is less than 5% and in the range of permission.