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Pastimes : Let's Talk About Our Feelings!!! -- Ignore unavailable to you. Want to Upgrade?


To: Father Terrence who wrote (50319)8/9/1999 7:15:00 PM
From: Jacques Chitte  Read Replies (1) | Respond to of 108807
 
You said something about better propulsion being 20 years away. Let's remember that getting to orbit is the hard part - a ground-to-orbit engine needs to be reliable, high-thrust and clean. No NERVAs.
Chemical simply doesn't have the Isp. Not even hyd-ramjet. How would you do it? Boost kilotons into LEO cheap&clean?