飞机飞行载荷校准试验约束补偿技术  

Constraint compensation technology on aircraftloads calibrationtest

作　　者：余建虎 YU Jianhu(Institute of Aircraft,Chinese Flight Test Establishment,Xi'an 710089,China)

机构地区：[1]中国飞行试验研究院飞机所,西安710089

出　　处：《航空学报》2023年第19期128-135,共8页Acta Aeronautica et Astronautica Sinica

摘　　要：为解决某飞机校准试验严重载荷工况时飞机约束装置载荷超出限制载荷的问题,对约束补偿方法进行研究;通过力学分析建立起飞机纵向及横航向平衡工程模型,并对约束补偿载荷与校准载荷的关系函数进行推导;针对某飞机结构特点,给出了一种试验时可实现全机动态平衡的约束补偿方案及其实施控制技术,有效修正了载荷校准试验中因加载动态误差、部件变形、设备安装间隙等问题造成的非线性误差。通过飞机载荷校准试验的实施,验证了约束补偿的科学性。结果表明:使用约束补偿技术可实现载荷校准试验时飞机的动态平衡,将起落架被动约束装置上的载荷波动比控制在5%以内,有效降低飞机校准试验风险。To solve the problem that the loads on the aircraft restraint device go beyond its limit of the landing gear un-der the serious load conditions in a particular aircraft loads calibration test,the design theory of constraint compensation is studied.A longitudinal and lateral-directional balance engineering model for aircraft is established based on me-chanical analysis,and the relationship function between the constraint compensation and the calibration loads is derived.According to the structural characteristics of the aircraft,a constraint compensation scheme which can realize the dynamic balance of the whole aircraft during the test,and implementation control techniques are proposed,which can effectively correct the nonlinear errors in dynamic loading,component deformation and loading equipment installa-tion deviation during loads calibration tests.By the implementation of aircraft loads calibration test,the scientific nature of the constraint compensation is verified.The results show that the constraint compensation can be used to realize the dynamic balance of the aircraft during loads calibration test and keep the variations of the 3-way loads on the passive restraint device of the landing gear within 5%,thus effectively reducing the risks of the calibration test.

关 键 词：飞行载荷 载荷校准试验 飞机约束 约束补偿 飞机平衡 

分 类 号：V217.32[航空宇航科学与技术—航空宇航推进理论与工程]