某型飞机前机身筒段热载-力载联合试验控制技术

Control Technology for Combined Test of Thermal Load and Force Load on the Front Fuselage Barrel of an Aircraft

为验证某型飞机前机身筒段混合结构全局以及局部温度应力分析方法,设计以大面积加热带、充气试验台为加载装置的热载-力载联合试验,提出一种以协调加载控制系统为核心的温度控制技术,设计了多种温度数据软件滤波算法,解决了温度载荷与气体压力载荷协调控制的问题,显著抑制了温度数据容易受到大功率加热装置及试验件内气体压力影响而产生的波动,圆满达到了试验考核要求,为其他飞机热力联合试验提供了参考。

In order to verify the global and local thermal stress analysis method of the hybrid structure of the front fuselage barrel of an aircraft,a combined thermal and mechanical load test is designed with a large area heating belt and an air inflation test bench as the loading device.A temperature control technology based on coordinated loading control system is proposed,and a variety of software filtering algorithms for temperature data are designed to solve the problem of coordinated control of temperature load and gas pressure load.The problem that the temperature data is easily affected by the gas pressure in the high-power heating device and test piece is significantly suppressed,and the test requirements are satisfied,which provides reference for other aircraft thermal joint tests.