根据某飞行器在飞行末段的减速要求,设计研究了一套减速系统.在分析设计要求的基础上,提出减速系统的总体设计方案,设计了总体结构及整个动作时序.切割器选型与可靠性设计、扭簧的合理机械复位设计是该减速系统的关键技术,对其进行了分析与计算,获得了满足要求的切割器与扭簧方案.考核试验表明,该减速系统能较好地达到规定的要求.

There are many methods to compute index weight,AHP is one useful and convenient method of them.The paper introduces the main content of weight coefficient computing method based on AHP,and the step of root and sum of two judgement matrix disposal method.After the reasoning of the instance when the judgement matrix meet coherence condition,two conclusions are gained: it doesn't need do coherence verification;the finally weight coefficient is the judgement matrix's any column's unitary result.According to the conclusion and the AHP's principle,the paper discusses a convenient weight coefficient computing method and gives an example of applying.