基于蓝光阴影图像法的固体推进剂药条燃速测量方法  

Measuring method for burning rate of solid propellant based on blue⁃light shadow imaging method

作　　者：胡海航 樊荣 杨杨 万代红 时志权 邓栩昌 杨斌[1] HU Haihang;FAN Rong;YANG Yang;WAN Daihong;SHI Zhiquan;DENG Yuchang;YANG Bin(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering,Shanghai 200093,China;Shanghai Space Propulsion Technology Research Institute,Shanghai 201109,China)

机构地区：[1]上海理工大学能源与动力工程学院/上海市动力工程多相流动与传热重点实验室,上海200093 [2]上海航天动力技术研究所,上海201109

出　　处：《固体火箭技术》2023年第4期644-652,共9页Journal of Solid Rocket Technology

基　　金：国家自然科学基金(51806144);上海市自然科学基金(21ZR1461900);上海航天科技创新基金(SAST2020-092)。

摘　　要：针对图像法固体推进剂药条燃速测量方法受火焰辐射影响问题,提出蓝光阴影图像法固体推进剂药条实时燃速测量方法,搭建相应的实验测量系统并进行燃速测试。在常压下利用该方法对药条A进行了5次重复性实验,开展了6种不同配方推进剂药条燃速测试,将蓝光阴影图像法得到的拟合燃速与靶线法测试结果进行对比,并对6种药条的实时燃速进行分析。结果表明,与直接成像法比较,蓝光阴影图像法可有效消除燃面处火焰自发辐射影响,提高燃面识别精度;对药条A进行的重复性实验中,平均值为2.534 mm/s,标准差为0.034 mm/s,扩展不确定度为0.069 mm/s,表明方法具有较高的稳定性;6种药条的拟合燃速与靶线法燃速结果对比,最大相对偏差为3.7%,说明该方法具有较高的测量精度。分析6种药条实时燃速的波动性发现,燃速高的药条往往其波动性较大,燃速接近时药条的波动性主要受药条配方的影响。Aiming at the problem that the propellant burning rate measurement by image method was affected by flame radia⁃tion,the real⁃time measuring method for burning rate of the solid propellant by blue⁃light shadow imaging was proposed,and the cor⁃responding experimental measurement system was set up,then burning rate test was carried out.The method was used to test the burning rate of six different propellant strands under atmospheric pressure.The fitting burning rate obtained by blue⁃light shadow im⁃age method was compared with the strand⁃burner method,and the real⁃time burning rate of six kinds of propellant was analyzed.The results show that compared with the direct imaging method,the blue light shadow imaging method can effectively eliminate the influ⁃ence of spontaneous flame emission at the burning surface and improve the recognition accuracy of burning surface.In the repeat⁃ability experiment of propellant A,the average value of burning rate is 2.534 mm/s,the standard deviation is 0.034 mm/s,and the expanded uncertainty is 0.069 mm/s,indicating that the method has high stability.The fitting burning rate was contrasted with that of strand⁃burner method,the maximum relative deviation is 3.7%,which indicates that the method has high measurement accuracy.The real⁃time burning rate fluctuation of the six kinds of propellant strands was analyzed.It is found that the propellant with high burning rate often has large burning rate fluctuation.When burning rate is close,the burning rate fluctuation was mainly affected by formula.

关 键 词：固体推进剂 燃速测试 实时测量 蓝光阴影图像法 燃面识别 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]