神舟七号飞船伴星液氨闪蒸射流推进技术

摘要

神舟七号飞船伴星推进系统首次采用了液氨闪蒸射流工作模式，利用液氨在真空环境下的闪蒸特性，使得推进系统在具有结构简单、安全性高的基础上，功耗的需求显著降低。在对液氨闪蒸射流推进模式进行了分析和计算的基础上，遗过地面试验和上天飞行结果进行对比，表明了闪蒸射流推进模式是一种比较适合微小卫星的推进方案。%Flashing jet is adopted in the propulsion system of a circling satellite BX-1 of Shenzhou-7 spacecraft. The power consumption of this propulsion system is dramatically reduced by the use of liquefied ammonia flashing evaporation. Comparison of the results of ground and flight tests indicates that flashing jet propulsion mode might be the best choice for micro-satellites.