Sodium azide is the fuel of choice for a number of reasons. It is a solid propellant with a very high gas generation ratio. It is very stable in this application.

钠叠氮化物被选作燃料是有原因的，它是固体的，能够推进产生气体的发生率，并且在应用中非常稳定。

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The method to measure the burning rate coefficient and pressure index of a solid propellant with only one strand is discussed and analyzed, and the measured and processed results are given.

分析讨论了用一根药条测量固体推进剂燃速系数和压力指数的方法，并给出了测量和处理结果。

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Russian sources said that much more experimental work and funding would be required to prove that solid propellant could be safely used for a manned landing.

俄罗斯的消息人士称，这将需要更多的试验工作以及资金来证明固体推进剂可以被安全地用于载人着陆。

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Made from carbon fiber, the Vega uses a solid propellant which gives it faster speeds than the Ariane 5.

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The flame from the burning propellant appears as a solid white mark.

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