水上应急门开锁机构手柄力分析与卡滞可靠性研究  

Handle Force and Stuck Reliability of the Aircraft Water Emergency Door

作　　者：魏涛 苟文选[1] 谭松 赵晓博[3] 

机构地区：[1]西北工业大学力学与土木建筑学院,西安710129 [2]西北工业集团有限公司,西安710043 [3]中国航空工业集团公司洛阳光电设备研究所,洛阳471023

出　　处：《西安工业大学学报》2017年第10期730-735,共6页Journal of Xi’an Technological University

基　　金：国家自然科学基金项目(51305350)

摘　　要：为了保证应急门能够可靠地完成开关以提高飞机水上迫降后机上人员的生存率,对应急门锁机构开锁力矩进行了试验分析,得到了锁机构拉杆和摇臂长度与锁机构开锁力矩之间关系.基于ADAMS软件建立了锁机构的样机模型,进行仿真分析,通过与试验数据比较,验证了数值模型的准确性.将锁机构拉杆长度、助力弹簧刚度系数和连杆销钉直径处理为随机变量,采用四阶矩法进行锁机构卡滞可靠性灵敏度分析,获得了锁机构关键尺寸及其随机性对卡滞可靠性影响的排序.结果表明:拉杆长度较小且摇臂长度较长时,应急门开启所需手柄力矩较大,应急门锁机构卡滞可靠度较低;随着拉杆长度的增加,摇臂长度减小,开启应急门锁所需手柄力矩逐渐减小,机构的抗卡滞性能增大.Water emergency door is an important access for crew when aircraft ditching on water, it is necessary to make sure that the emergency door can complete the switch process reliably. The unlocking torque of the emergency door is tested by the experiment, the lengths of the lock rod and rocker arm have an important influence on the unlocking torque of the lock mechanism. The prototype of the lock mechanism is established by ADAMS,the accuracy of the numerical model is verified by comparing with the experimental data. Then, the lock mechanism of rod length, power spring stiffness coefficient and rod pin diameter are treated as random variables, the stuck reliability sensitivity is calculated by the four- order-moment method. The critical dimensions of the locking mechanism and its sensitivity on the reliability of the locking system is obtained. The investigation shows：When the rod length is smaller and the length of arm is longer, a larger torque is required to open the emergency door, and the stuck reliability of the lock mechanism decreases; decreases, the required opening-torque of the gradually. When the rod length is longer, and the 1 emergency door decreases, and the stuck ength of rocker arm reliability increases

关 键 词：锁机构 卡滞 水上应急门 四阶矩法 

分 类 号：V223.9[航空宇航科学与技术—飞行器设计]