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by IdeaHamstir
3039 days ago
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> Bringing from Earth a few tons of nuclear-powered jet engine to use water as propellant would take building such an engine first. We're not even close. True, but small scale solar thermal propulsion systems have been built and require minimal mass. Isp is a largely function of collector area (mylar film is lightweight) and reaction mass. If the water is cracked and the hydrogen used for propulsion, an Isp of 1000 is achievable, far surpassing chemical rockets. |
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