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AHC: Moon Race 1956!
Between Seagrams (of Canada) and Jim Beam (of the USA).
A LOX/alcohol rocket has an exhaust velocity of up to 3.3 km/ (In practice it's lower but there doesn't seem to have been a lot of interest in LOX/Alochol rockets). Ignoring things like air resistance, a round trip to the Moon is about 9.4 km/s, for a mass ratio of about 3. In practice, it would be much larger of course. But how to get Seagrams to commit to a moon program, crewed or otherwise? -- http://www.cic.gc.ca/english/immigrate/ http://www.livejournal.com/users/james_nicoll |
#2
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In article ,
James Nicoll wrote: A LOX/alcohol rocket has an exhaust velocity of up to 3.3 km/ (In practice it's lower but there doesn't seem to have been a lot of interest in LOX/Alochol rockets). Ignoring things like air resistance, a round trip to the Moon is about 9.4 km/s, for a mass ratio of about 3. Uh, no. For one thing, 9.4km/s is about right for reaching low Earth orbit; getting to the Moon requires about 11km/s (plus some extra for gravity losses, drag losses, etc.) And mass ratio isn't deltaV/exhaustV, it's e^(deltaV/exhaustV), so doing 11km/s on LOX/alcohol is a mass ratio of around 28. -- "Think outside the box -- the box isn't our friend." | Henry Spencer -- George Herbert | |
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