摘要
为测量高超声速飞行器驻点区防热材料线烧蚀量,提出了一种烧蚀位置投影测量的光学方法。通过标定相机与模型间的比例系数、采集模型的烧蚀视频以及图像处理等手段获取烧蚀后退量。在2种试验状态下,进行了4类材料的烧蚀测量,实现了频率为25Hz的实时测量,且测量误差小于0.16mm,测量结果可应用于烧蚀分析。
To measure the line recession of thermal protection materials on stagnation aero of hypersonic vehicle, an optical method of projective recession measurement （PRM） is described. The line recession was obtained by calibrating the proportional coefficient between camera and model, collecting ablative video of model and image processing. The method was applied to measure 4 materials under two states, the frequency of the measurement is 25Hz, and the error of the measuring results is less than 0.16mm. The measuring results can be applied to ablation analysis.
出处
《计量学报》
CSCD
北大核心
2016年第4期380-383,共4页
Acta Metrologica Sinica
关键词
计量学
线烧蚀量
烧蚀投影测量
防热材料
metrology
line recession
projective recession measurement
thermal protection materials
