视频测量方法在风洞模型姿态角测量中的应用  

Videogrammetry application in wind tunnel model attitude measurement

作　　者：张孝棣[1] 蒋甲利[1] 贾元胜[1] 马洪志[1] 肖亚克[1] 

机构地区：[1]中国航空工业空气动力研究院,哈尔滨150001

出　　处：《实验流体力学》2005年第3期21-25,共5页Journal of Experiments in Fluid Mechanics

摘　　要：在现代的风洞模型试验测量中,角度测量误差所引起的阻力系数误差大约占总阻力系数误差的1/4,准确地测量模型的实际角度是提高数据准确度的一个重要因素。应用视频测量原理,通过图像处理的方法动态实时采集计算模型的实际角度值,模型角度的测量精密度可达0.01°,测量准确度可达0.015°。测量速率每秒25次。In modern wind tunnel model test, quarter of the error of drag coefficient is induced by the error of model angle measurement. So accurately measuring the actual model angle during the test is important to improve the accuracy of the wind tunnel test data. This paper describes a videogrammetry method for model angle measurement in wind tunnel tests. Measurement precision of the videogrammetry angle measurement system is 0.01° and measurement accuracy is 0.015°. The measuring rate is 25 times in a second.

关 键 词：视频测量 风洞模型 角度测量 图像处理 

分 类 号：V211.7[航空宇航科学与技术—航空宇航推进理论与工程]