气动减速系统阻力伞锁机构可靠性分析  

Reliability Analysis on Drag Parachute Lock Mechanism of Aerodynamic Deceleration System

作　　者：辛富康 雷华金 王攀[1] Xin Fukang;Lei Huajin;Wang Pan(Northwestern Polytechnical University,Xi’an 710072,China;AVIC Aerospace Life-support Industries Ltd.,Xiangyang 441003,China)

机构地区：[1]西北工业大学,陕西西安710072 [2]航空工业航宇救生装备有限公司,湖北襄阳441003

出　　处：《航空科学技术》2023年第5期80-86,共7页Aeronautical Science & Technology

基　　金：航空科学基金(201929053001)

摘　　要：气动减速系统是保证飞机正常飞行的关键,如何高效、可靠地实现阻力伞锁机构的打开是影响气动减速系统的关键。本文以气动减速系统阻力伞锁机构为研究对象,通过对阻力伞锁机构运动特性的分析建立了刚柔耦合仿真模型并开展动力学仿真。针对其复杂的工作特点,提出了阻力伞锁机构卡滞与精度失效两种关键失效模式。针对关键失效模式分别建立了可靠性分析模型,采用AK-MCS法计算阻力伞锁机构可靠性。通过本文研究,得到了阻力伞锁机构在不确定性环境下可靠性水平,可以为今后阻力伞锁可靠性设计提供参考依据。Aerodynamic deceleration system is important to ensure the normal flight of aircraft,while to efficiently and reliably to swithch on the drag parachute mechanism is vital to influence the aerodynamic deceleration system.This paper takes the drag parachute lock mechanism of aerodynamic deceleration system as the research object.The rigid-flexible coupling simulation model is established by analyzing the motion characteristics of drag parachute lock mechanism.According to its complex working characteristics,two key failure modes stuck and precision failure of drag parachute lock mechanism are proposed.Based on this,the reliability analysis model of two failure modes is established.The AK-MCS method is used to calculate the reliability of drag parachute lock mechanism,which provides technical support for improving the reliability design level of drag parachute lock mechanism of aerodynamic deceleration system and meeting the reliability requirements.

关 键 词：阻力伞锁 机构 失效模式 KRIGING模型 可靠性 

分 类 号：V226[航空宇航科学与技术—飞行器设计]