Heat balance evaluation of double-base solid propellant combustion using thermography and laser heating on a burning surface
Heat balance evaluation of double-base solid propellant combustion using thermography and laser heating on a burning surface
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使用热成像和激光加热在燃烧表面上评估双基固体推进剂燃烧的热平衡
DOI：
10.1016/j.ast.2015.09.013
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发表时间：
2015
影响因子：
5.6
通讯作者：
Akira Kakami and Takeshi Tachibana
中科院分区：
文献类型：
--
作者：
鈴木宏二郎;難波和也;Akira Kakami and Takeshi Tachibana
提出了一种利用激光加热和红外热像技术估算固体推进剂燃烧传热平衡的新方法：燃面产热率Qstecs，燃面到固相的热流密度Λ p，火焰到燃面的热流密度Hf。Hf由燃烧速率与激光加热燃烧表面的功率密度之间的关系确定，Λ p由热像法测量的燃烧表面温度确定。在具有激光引入窗口的燃烧室中对双基推进剂进行了试验，并用808 nm的激光照射，激光功率密度为0.3 ~ 0.8W/mm 2，背压为0.02 ~ 0.60MPa。计算结果表明，在背压为0.60MPa时，燃烧面到燃烧面的热流密度Hf为1.7W/mm 2，燃烧面产热率Qstecs为4.9W/mm 2，燃烧面到固相的热流密度Λ p为6.6W/mm 2。通过测量火焰引起的激光功率衰减，研究了激光功率衰减对火焰到燃烧表面热流率估算的影响。实验表明，火焰引起的激光功率衰减引起的误差小于18%。
A new method is proposed using laser heating and thermography for estimating the heat transfer balance for burning solid propellant: heat production rate on burning surface Q˙ s, heat flux from burning surface to solid phase Λ p, and heat flux rate from flame to burning surface H f. H f is determined from the correlation between burning rate and power density of laser heating on burning surface; Λ p is evaluated using the burning surface temperature measured with thermography. Double-base propellant is tested in a combustion chamber having a laser-introducing window, and is irradiated with an 808-nm laser at laser power densities ranging from 0.3 to 0.8 W/mm 2 with a back-pressure range from 0.02 to 0.60 MPa. The proposed method shows heat flux from burning surface to burning surface H f of 1.7 W/mm 2, heat production rate on burning surface Q˙ s of 4.9 W/mm 2, and heat flux from burning surface to solid phase Λ p of 6.6 W/mm 2 at a back pressure of 0.60 MPa. Laser power attenuation due to the flame is determined to evaluate the influence of laser power attenuation on the estimation of heat flux rate from flame to burning surface. The experiment shows that errors originating from laser power attenuation due to the flame are below 18%.