The fuel rich propellant used for the unchoked ram rocket should has high burning rate exponent, appropriate burning rate, low flammability limit and steady combustion properties.

• 分析结果表明：非壅塞式固体火箭冲压发动机要求贫氧推进剂具有高的燃速压强指数、低的可燃极限和足够好的燃烧稳定性。