密闭式弹射座椅稳定减速技术研究

Research on the Stabilization and Deceleration Technology of Closed Ejection Seat

建立了适用于临近空间条件下的密闭式弹射座椅模型,采用计算流体力学(CFD)方法研究了座椅的外流场。根据外流场研究结果设计了两种可能的稳定减速方案,通过比较气动特性,选取了较优的稳定减速方案。最后,通过性能计算方法研究了座椅出舱后的运动情况,对稳定减速方案的参数进行了优化。

The model of closed ejection seat which was applicable to the near space was built.The outer flow field of the seat was studied by CFD simulation.Two possible solutions of stabilization and deceleration were designed based on the result of outer flow field simulation,and the better solution was selected by comparison of the areodynamic characterisics.Finally,the parameters of the solution were optimized by the study of the movement of the seat after ejection with performance computation method.