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使用含铝推进剂的固体火箭发动机,在工作时,一般在喷管壁面上留下一层三氧化二铝的沉积物.这沉积物对于小喷管喉部,长时间工作的固体火箭发动机工作性能影响很大. 本文从喷管喉部的能量守恒、热传导规律出发,分析并求出了三氧化二铝在喉部的沉积规律及其数学表达式.从而,可以予估使用含铝推进剂的固体火箭发动机在其工作时三氧化二铝的沉积状态.
Solid rocket motors using aluminum-containing propellants typically leave a layer of aluminum oxide deposits on the nozzle wall during operation, which work for small nozzle throats, long working solid rocket motors Performance is very great.This paper analyzes and calculates the law of deposition of aluminum oxide in the larynx and its mathematical expression from the law of conservation of energy and heat conduction in the throat of the nozzle.Thus, it can be estimated that the use of aluminum-containing propellants The solid rocket motor in its working state of deposition of aluminum oxide.