SHI Jun-hui, LI Yong-hong, WANG En-huai. Design of aircraft aerodynamic parameters test system[J]. 2015, 34(2): 113-115+135. DOI: 10.13873/J.1000-9787(2015)02-0113-03.
飞行器气动参数测试系统设计
摘要
为实现飞行器在实际飞行过程中受不同梯度气压影响的实时测试
设计了一种飞行器气动参数测试系统。针对压力敏感头在测试过程中温度漂移的问题
在恒流激励下
采用高精度元器件完成压力传感器的零点和灵敏度温度补偿
介绍了各个模块的设计。通过最小二乘法进行曲线拟合得到补偿数据
经过测试
压力测量精度优于0.1%
验证了设计方案的可行性。
Abstract
To achieve real time tests of aircraft during actual flight affected by different pressure gradients
design a test system of aerodynamic parameters of aircraft. Aiming at temperature drift problem of pressure-sensitive head during testing
excited by constant current
use high-precision components to complete temperature compensation of zero point and sensitivity
introduce design of each modules. Test result shows that measurement precision of pressure parameters better than 0. 1 %