航天器发动机再启动的微重力基础研究  

Microgravity Researches Relating to Engine Restart of Spacecraft

作　　者：刘春辉[1] 

机构地区：[1]北京强度环境研究所,100076

出　　处：《强度与环境》1997年第1期45-51,共7页Structure & Environment Engineering

摘　　要：介绍了发动机再启动问题的工程应用背景，阐述了涉及发动机再启动的微重力基础研究范畴。在微重力条件下，正确考虑外界干扰载荷对贮箱中流体动力学行为的影响是至关重要的。给出了用三维程序计算的一些结果。在微重力条件下，液体燃料小滴能否被点燃、能否在预定时间内建立稳态火焰亦是再启动关心的问题之一。给出了一些在BISE落塔中获取的试验结果。The paper points that the microgravity researches are helpful and valuable to solve the en-gine restart problem. Outer disturbance is so easy to bring instability to the liquid propellants in a tank un-der a microgravity environment that it is important to consider correctly the disturbance acting on the liq-uid in design and development of spacecraft. As examples, some three-dimensional calculation results are given. Ignition conditions and stability burning of fuel droplet under microgravity are also important re-search field in engine restant. The behaviors of fuel droplets burning spherically which was photographed in BISE drop tower experiments are shown in the paper.

关 键 词：微重力环境 微重力试验 航天器发动器 起动 

分 类 号：V430[航空宇航科学与技术—航空宇航推进理论与工程]