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STUDY ON THE PROPELLANT ABLATION PROPERTIES OF LASER ABLATION PROPULSION

机译：激光烧蚀推进性的研究研究

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Laser ablation propulsion is one of the most potential advanced propulsion concepts, which has the notable advantage of high rate in propellant use and strong controllability. In order to improve the propulsion performance of laser ablation propulsion, PTFEenergetic material, a kind of composite propellant, is used to explore the ablation properties. A three dimentional model of the ablation propellant before and after meltdown under continuous laser is established through numerical analysis. On the other hand, the infrared thermometer is used to measure the temperature field of propellant. The result exhibits that the temperature in the laser focus area is as same as the laser model which correspond to Gaussian law. Moreover, the chemical property of propellant becomes more active with the increase of Al proportion in PTFEpropellant. The ignition temperature points of different proportion propellant are obtained with enough experimental data. The main aim of this paper is to obtain accurate ratio of Al in PTFEpropellant and suitable power of laser so that propulsion systems can reach the goal of higher and higher efficiency.
机译：激光烧蚀推进是最潜在的先进推进概念之一，具有高速率在推进剂使用和强可控性方面具有显着优势。为了改善激光消融推进的推进性能，使用一种复合推进剂，用于探索消融性质。通过数值分析建立在连续激光下熔化之前和之后的消融推进剂的三维模型。另一方面，红外温度计用于测量推进剂的温度场。结果表现出激光焦点区域中的温度与对应于高斯法律的激光模型相同。此外，随着PTFeProplell的比例的增加，推进剂的化学性质变得更活跃。用足够的实验数据获得不同比例推进剂的点火温度点。本文的主要目的是获得PTFeProplellant的准确比，并且激光的合适功率使得推进系统可以达到更高且更高的效率。

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