this post was submitted on 15 Mar 2024
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China plans to build a giant rail gun to launch hypersonic planes into space (www.scmp.com)
submitted 1 year ago by [email protected] to c/[email protected]
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[–] [email protected] 0 points 1 year ago

How did you calculate 8200 m/s?

I looked at a delta-v chart, which mostly list 9000-10000 for 250km orbits. I subtracted 10% from the one on Wikipedia for an absolute minimum.

Also your length of the railgun exceeds the atmosphere,

That rather speaks against the concept, wouldn't you say?