Abstract
Resorting to the continuous assistance of external laser radiation, laser augmented chemical propulsion (LACP) reveals superior combustion performance. However, the corresponding combustion theories have still to be ascertained for this innovative propulsion technique. Thermal characteristics of 5-aminotetrazole (5-ATZ) propellant are studied for LACP. In nitrogen environment, unique structures of burning surface are formed under laser ablation in bare samples of 5-ATZ propellant pressed powders. Resorting to an outer tube, a thermocouple is inserted in 5-ATZ propellant samples to obtain the temperature trace during combustion. In analogy with the burning surface structure reconstructed by micro computed tomography (MicroCT), the temperatures values of three significant regions were obtained. The experimental dependences of the measured temperatures on environment pressure and laser power are discussed.
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