多气参测量的压力型基准大气数据系统研制  

Development of Pressure Reference Atmospheric Data System for Multi-Gas Parameter Measurement

作　　者：闫万方 杨辉[1] 尼文斌[1] 贺丽慧[1] YAN Wan-fang;YANG Hui;NI Wen-bin;HE Li-hui(China Academy of Aerospace Aerodynamics,Beijing 100074,China)

机构地区：[1]中国航天空气动力技术研究院,北京100074

出　　处：《测控技术》2022年第9期56-62,共7页Measurement & Control Technology

基　　金：国家自然科学基金面上项目(11672283)。

摘　　要：针对某飞行器嵌入式大气数据传感(FADS)系统的飞行试验校准问题,研制了一套压力型姿态角测量的多气参基准大气数据系统。设计了可实现高线性度、解耦的压力型姿态角测量空速管,并配套研制了大气数据计算机。解决了有限空间内多气路之间密封、同时精确取气和压力测量、飞行器机体干扰下的风洞试验标定、多参数拟合修正的气参解算等难题,获得了机体干扰下的空速管测量修正解算公式,实现了基准气参的高精度测量。在完成基准空速管的风洞试验标定和联调试验后,实现了对全系统正常工况下的飞行参数测量精度及系统稳定性考核,最终成功应用于飞行试验中。Aiming at the flight test calibration of a flush air data sensing(FADS) system for the aircraft, a pressure-typed atmospheric data system for multi-gas parameters measurement of an aircraft is developed.A pressure-type attitude angle measurement pitot tube with high linearity and decoupling is designed, and an atmospheric data computer is developed.The problems such as sealing between multiple gas paths in a limited space, accurately taking gas and measuring pressure at the same time, wind tunnel test calibration under the interference of aircraft body and multi parameter fitting correction of gas parameter are solved.The correction solution formula of pitot measurement under the interference of aircraft body is obtained, and the high-precision measurement of reference gas parameters is realized.After completing the wind tunnel test calibration and joint test of the reference pitot, the flight parameter measurement accuracy and system stability under normal working conditions of the whole system are evaluated, which is applied to the flight test successfully.

关 键 词：基准大气数据系统 压力型姿态角 风洞试验 联调试验 干扰修正 

分 类 号：V247.16[航空宇航科学与技术—飞行器设计]