Ni Hu, Fan Rong, Hu Haihang, Yang Bin, Wang Zhixin, Cao Di, Yang Yang, Shi Zhiquan
Appl Opt. 2024 May 1;63(13):3420-3429. doi: 10.1364/AO.520172.
To characterize the combustion properties of solid propellants, the synchronized measurement method of burning rate and combustion temperature is proposed combined shadow imaging and radiation imaging. Using spectroscopic and filtering imaging, shadow and radiation images of a solid propellant specimen are obtained synchronously. Burning rate is calculated by burning surface movement velocity of shadow images, and combustion temperature is calculated by radiation image thermometry. Measurement accuracies of burning rate and combustion temperature of the solid propellant specimen are validated by other independent measurement methods. On this basis, the synchronized measurements of burning rate and combustion temperature of different formulations of solid propellant specimens under different working conditions are carried out. The results show that the influence on burning rate and combustion temperature of pressure and formulas is different. Therefore, the synchronized measurement of burning rate and combustion temperature can provide more direct data support for the evaluation of solid propellant combustion performance.
为了表征固体推进剂的燃烧特性，结合阴影成像和辐射成像提出了燃烧速率和燃烧温度的同步测量方法。利用光谱和滤波成像，同步获取固体推进剂试样的阴影和辐射图像。通过阴影图像的燃烧表面移动速度计算燃烧速率，通过辐射图像测温法计算燃烧温度。采用其他独立测量方法验证了固体推进剂试样燃烧速率和燃烧温度的测量精度。在此基础上，对不同配方的固体推进剂试样在不同工况下的燃烧速率和燃烧温度进行了同步测量。结果表明，压力和配方对燃烧速率和燃烧温度的影响不同。因此，燃烧速率和燃烧温度的同步测量可为固体推进剂燃烧性能评估提供更直接的数据支持。
