ST型缓冲器是铁路车辆运输过程中用于抗冲击的关键部件，推力锥作为其中的主要传力零件，其精度和表面质量要求都非常高。
ST bumper used to resist shock is a pivotal part in railway vehicle transportation. As primary load-transfer component of this part, thrust cone required very high precision and surface quality.
建立了微型脉冲推力器点火启动模型，模型中考虑了两相流动和颗粒对推进剂表面的冲击传热。
Ignition start-up model of impulse micro-thruster is established, considering two phase flow and impact heat transfer of particle on the surface of propellant.
经计算和实验表明：活塞在上止点附近，当活塞由非推力面快速地移向推力面时，对缸套具有较大的冲击能量。
The results of calculating and experimenting show that the first and largest slap of impact between the piston and the liner occurs around the top dead center from the nonthrust to the thrust face.
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