航天器工程
航天器工程
항천기공정
SPACECRAFT ENGINEERING
2012年
2期
123-126
,共4页
热刀%压紧释放装置%释放可靠性%评估
熱刀%壓緊釋放裝置%釋放可靠性%評估
열도%압긴석방장치%석방가고성%평고
thermal knife%hold-down and release mechanism%release reliability%evaluation
介绍热刀式压紧释放装置的功能及工作原理,确定该型压紧释放装置的释放可靠性特征量为核心元件＂热刀＂的可使用次数。基于＂热刀＂元件使用次数服从泊松分布的基本假设,提出该型压紧释放装置的释放可靠性验证试验及评估方法,包括选择试验方法、确定试验件的状态、试验条件、试验程序、故障判据及可靠性评估方法,并给出了应用示例,可为其释放可靠性评估提供技术途径。
介紹熱刀式壓緊釋放裝置的功能及工作原理,確定該型壓緊釋放裝置的釋放可靠性特徵量為覈心元件＂熱刀＂的可使用次數。基于＂熱刀＂元件使用次數服從泊鬆分佈的基本假設,提齣該型壓緊釋放裝置的釋放可靠性驗證試驗及評估方法,包括選擇試驗方法、確定試驗件的狀態、試驗條件、試驗程序、故障判據及可靠性評估方法,併給齣瞭應用示例,可為其釋放可靠性評估提供技術途徑。
개소열도식압긴석방장치적공능급공작원리,학정해형압긴석방장치적석방가고성특정량위핵심원건＂열도＂적가사용차수。기우＂열도＂원건사용차수복종박송분포적기본가설,제출해형압긴석방장치적석방가고성험증시험급평고방법,포괄선택시험방법、학정시험건적상태、시험조건、시험정서、고장판거급가고성평고방법,병급출료응용시례,가위기석방가고성평고제공기술도경。
This paper introduces the functions and the principles of the hold-down and release mechanism actuated by a thermal knife element,and gives the using times of the key element as the release reliability characteristic parameter of the mechanism.Based on the hypothesis of the using times of the thermal knife element following Poisson distribution,and the release reliability validation tests and evaluation methods for the hold-down and release mechanism are put forward,including test method choosing,determination of test state,test program,failure criterion and reliability assessment method.An application example of the method is shown.By the reliability evaluation test method,the release reliability of the hold-down and release mechanism actuated by a thermal knife element could be verified.
