关键词: 固体发动机;推进剂药柱;设计;内弹道学;计算

Abstract: In this paper the formulate for calculating burning surface of remanent grain or aft end grain is presented. A new design nethod for optimizing grain parameters by means of rough internal ballistic calculat ion is discribed.Accurate internal ballistic calculation is performed by one dimensional quasi-steady flow model. The calculation results of pressure agree with the measured results within 5 percent. The method has been successfully appliec to motor design and is apropriate to other internal burning grain motor design. Tne application of the method will reduce experiments greatly and save a lot of research funds.

Key words: Solid rocket moter;Propellant grain;Design;Interior balli- stic;Calculation