固体推进剂药柱的可靠性评估技术

Evaluation Methods of Solid Propellant Grain Reliability

为满足目前固体发动机研制的可靠性需要,对固体推进剂药柱的结构可靠性因素、评估方法以及可靠性评估中药柱失效模式的研究情况等进行了评述。对过载试验的原则和实例以及药柱可靠性评估所涉及的3个研究领域(失效判据、结构分析方法和推进剂响应与失效性质)存在的关键问题及其研究状况进行了详细介绍。指出了固体药柱可靠性评估技术亟待解决的一些问题和发展方向。

In order to meet the demand of developing the evaluation methods for reliability of solid rocket motor, the current situation about structural reliability factors, evaluation methods and failure modes in reliability evaluation of solid propellant grain are reviewed. The overload test firing principles and examples, the existing problems and major pioneer studies in three research areas involved in grain reliability evaluation, namely failure criteria, structural analysis methods, as well as propellant response and failure properties, are discussed in detail. The problems faced are presented, and the development directions are pointed out.