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- From: redin@lysator.liu.se (Magnus Redin)
- Newsgroups: sci.space
- Subject: Re: SSTO vs 2 stage
- Message-ID: <C0G3BB.1Iv@lysator.liu.se>
- Date: 6 Jan 93 18:28:21 GMT
- References: <19254@mindlink.bc.ca>
- Sender: news@lysator.liu.se
- Organization: Lysator ACC at Linkoping University
- Lines: 18
-
- Bruce_Dunn@mindlink.bc.ca (Bruce Dunn) writes:
- > The most likely thing that we are going to want in large quantities
- >in orbit is propellant. For example, a Mars expedition using conventional
- >chemical propulsion might require something like 5000 tons initial mass in
- >orbit, most of which is LOX and LH2. To transfer 50 tons of LOX and LH2 to
- >orbit in a DC-1 using a lower stage,
- Wouldent it be a much smaller technical risk if one built 10 more DC-1
- wehicels instead and stream lined the fuel flights?
- It ought to be cheaper but I havent got reliable figurs.
- I think it makes sence to use standard DC-1 wehicels for simple high volume
- cargo until there is enough flights to justify a gas gun that launches
- smal cannisters for a much lover cost per kilogram to orbit.
-
- --
- --
- Magnus Redin Lysator Academic Computer Society redin@lysator.liu.se
- Mail: Magnus redin, Rydsv{gen 240C26, 582 51 LINK|PING, SWEDEN
- Phone: Sweden (0)13 260046 (Answering machine) and (0)120 13706
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