摘要: Studies concerning the physical mechanism for laser diode ignition of hybrid rocket motors have been performed. In an effort to better quantify the viable ignition parameters and provide a qualitative discussion on ignition mechan... 展开 Studies concerning the physical mechanism for laser diode ignition of hybrid rocket motors have been performed. In an effort to better quantify the viable ignition parameters and provide a qualitative discussion on ignition mechanism behavior, a test series was performed on carbon embedded Poly (methyl methacrylate) fuel samples in an optically accessible, slab-burning combustion chamber. This paper expands upon laser induced particle ignition for two grades of graphitic powders (sized ＜ 20 μm and ＜ 150 μm) with extensive experimental data. High speed imagery of combustion (Oxygen oxidizer) and inert flow (Nitrogen oxidizer) environment testing revealed the efficacy of utilizing micron size graphite particles at low to intermediate local flow rates and agrees well with the established theory on the conditions for non-charring successful laser ignition. A discussion is presented on the optimal fuel construction necessary for consistent ignition performance. 收起