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Old 06-25-2013, 02:41 AM   #6
RogerBW
 
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Join Date: Sep 2008
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Default Re: [Space, Spaceships] Mars Semi-Cycler?

Quote:
Originally Posted by Fred Brackin View Post
Why are you assessing Delta-V of differently sized vehicles against each other?

It's that total mass of propellant that's the proper measuring stick and you admit it would be less for a cycler.
Only if the bits that aren't needed at either end are significantly massive. Which is true in some scenarios but not in all. I'm not objecting to the concept, just noting that you need to make some tech assumptions to make it work.
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