关于平衡压力的几个问题

SOME PROBLEMS ON THE EQUILIBRIUM PRESSURE

关键词:  固体火箭发动机  推力室压力

Key words:  Solid rocket engine  Thrust chamber pressure

摘要:

本文论述了定义物理量的基本要求并对平衡压力下了定义.然后,简略地证明了平衡压力的稳定条件以及燃烧室压力与平衡压力的近似关系.对于侧面燃烧装药的固体火箭发动机,在稳定条件下,燃烧室压力-时间曲线上只有少数特殊点处于平衡状态工作,而大量的其它点处于准平衡状态下工作.

Abstract:

In this paper,the fundamental requirements for defining the physical parameters are discussed,and the equilibrium pressure is defined.The stable condition of equilibrium pressure and the approximate relationship between the chamber pressure and the equilibrium pressure are derived.In the case of a side-burning grain of a solid propellant rocket engine,only few particular points along the chamber pressure versus time curve under the stable condition are kept in equilibrium. The rest on the curve remain in quasi equilibrium.