| 摘要: |
| 为了分析大长径比固体火箭发动机点火瞬态过程性能散布的主要原因,引入特征间隙概念,分析了其性质,并验证其适用性,将其作为设计准则,分析了两台发动机点火瞬态过程,认为大长径比发动机点火瞬态过程性能散布主要原因不是加工精度,而是点火装置性能散布,并用数值计算验证了这一结论。 |
| 关键词: 固体火箭发动机 特征间隙 点火瞬态过程 性能散布 |
| DOI： |
| 分类号:V435 |
| 基金项目:国家“八六三”项目资助(2002AA765030)。 |
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| Analysis of characteristic gap of solid rocket motors |
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ZHONG Tao, ZHANG Wei-hua, WANG Zhong-wei, QING Long
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Inst.of Aerospace and Material Engineering,National Univ. of Defence Technology,Changsha 410073,China
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| Abstract: |
| To investigate the ignition transient performance distribution of large L/D solid rocket motors,the characteristic gap as a new design criterion for SRM is introduced.It is used on large aspect ratio motors and verified.The main cause of ignition transient performance distribution of large L/D motors is found to be the distribution of igniter mass rate,not the geometric precision. The numerical simulation result is consistent with this conclusion. |
| Key words: Solid propellant rocket engine Characteristic gap Ignition transient Performance distribution |
