Researching on stability of rocket ejection seat

The paper presents the theoretical analysis and simulation verification on the effects of the three kinds of stabilized techniques, which include the drogue chute, the stabilization fins and the stabilization booms, to stabilize the ejection seat. The stability effects are evaluated through testing the stability performance of the seat according to the parameters of the three-axial angular velocity and Multi-axial Dynamic Response Index (MDRI). As the simulation results shown, the drag performance of the drogue chute, the deployable area of the stabilization fins and the length of the stabilization booms are the critical parameters to measure the stability of the seat. The research results in the paper, which has comparatively theoretical and practical value, will provide a theoretical basis for the selection of the stabilized devices of the new generation rocket ejection seat.