refine
发表于 2025-3-26 22:08:23
John Gaffney a human mission to Mars using chemical propulsion or nuclear thermal propulsion. Gear ratios {(initial mass)/(delivered payload mass)} for each step are analyzed. Solar electric propulsion for Earth orbit-raising is reviewed. Ascent from the Mars surface is analyzed in detail. Propellant requiremen
Commemorate
发表于 2025-3-27 04:29:50
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bleach
发表于 2025-3-27 09:19:32
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变态
发表于 2025-3-27 09:53:40
John Gaffneyp-down edict from NASA management refocused on short- stay nuclear powered missions. This is likely to murky the picture further. The critical advanced technologies needed to enable human missions to Mars include reliable ECLSS and long-term life support systems, large-scale aerocapture and aeroassi
文件夹
发表于 2025-3-27 15:31:26
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indignant
发表于 2025-3-27 21:15:28
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身体萌芽
发表于 2025-3-27 22:32:55
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sigmoid-colon
发表于 2025-3-28 03:59:19
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直言不讳
发表于 2025-3-28 08:02:06
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