c7h5n2o4 发表于 2013-10-10 21:19
这篇好像没讲

就在开头的一段啊~~~~~~~

During and immediately after World War II, alcohols (primarily ethyl alcohol, occasionally methyl alcohol) were the single most common fuel for large liquid-fueled rockets. Its high heat of vaporization kept regeneratively-cooled engines from melting, especially considering that alcohols would typically contain several percent water.

由于内部含水


However, it was recognized that hydrocarbon fuels would increase engine efficiency, due to a slightly higher density, the lack of an oxygen atom in the fuel molecule, and negligible water content. Whatever hydrocarbon was chosen, though, would have to replicate alcohol's coolant ability.

碳氢燃料缺乏氧原子（乙醇中的氧来源于羟基）