基于弹簧系统的飞机结构扣重技术  

Weight Deduction Technology Based on Spring System of AircraftStructure Strength Test

作　　者：王孟孟[1] 郑建军[1] 王彬 唐吉运[1] WANG Meng-meng;ZHENG Jian-jun;WANG Bin;TANG Ji-yun(National Key Laboratory of Strength and Structural Integrity,Aircraft Strength Research Institute of China,Xi'an 710065,China)

机构地区：[1]中国飞机强度研究所强度与结构完整性全国重点实验室,西安710065

出　　处：《科学技术与工程》2023年第36期15717-15723,共7页Science Technology and Engineering

摘　　要：飞机强度验证试验中,为保证集中大质量结构扣重的准确性,提高卸压安全性,基于弹簧系统提出了一种新的飞机结构扣重技术。解决了作动器扣重方式卸压后扣重载荷消失以及反配重扣重方式摩擦力使扣重量值不够准确两项技术难点问题。通过验证试验对该扣重装置进行测试,结果表明:弹簧刚度数据与设计预期吻合良好;试验状态,载荷施加正常;卸压时刻,试验载荷和扣重载荷转换平稳;停机状态,扣重载荷施加准确。成功应用于某型飞机疲劳试验发动机假件扣重,实现了飞机集中大质量结构试验状态和停机状态的准确扣重,同时降低了卸压瞬间载荷冲击。In the aircraft strength verification test,a novel technology of aircraft weight deduction based on spring system was proposed in order to ensure the accuracy of weight deduction and improve the safety of oil pressure relief.This technology resolved two technical issues of the weight deduction loading disappeared after oil pressure relief by hydraulic actuator and the weight deduction was not accurate enough due to the friction force of bob weight.The weight deduction device based on spring system verification test results show that the spring stiffness data agreed well with the design expectation,the application of load in the test state is normal,the transition between test loading and weight deduction loading in the moment of oil pressure relief is stable,the weight deduction loading in the shutdown state is accurate.It is successfully applied to the weight deduction of the replacement engine in the fatigue test of a certain type of aircraft,realizing the accurate weight deduction of the concentrated mass structure in the test state and the shutdown state,and reducing the load impact at the moment of oil pressure relief.

关 键 词：作动器扣重 反配重扣重 弹簧系统 扣重载荷 试验载荷 

分 类 号：V216.1[航空宇航科学与技术—航空宇航推进理论与工程]