[ExI] one way ticket to mars

spike spike at rainier66.com
Tue Apr 23 18:04:24 UTC 2013

-----Original Message-----
From: extropy-chat-bounces at lists.extropy.org
[mailto:extropy-chat-bounces at lists.extropy.org] On Behalf Of Eugen Leitl
>>... My assumptions went up to Isp of about 1200 m/sec, much beyond which

>...VASIMR VX-200 claims an Isp of 5000 s...

Ja, I meant 12,000 m/sec.  If they can get 5000 sec or about 50k m/sec, then
well OK, I will at least pay attention.

There was a guy named Bruce Johnson at NASA Glenn in Ohio back in the 90s
who was saying we could make those kinds of numbers, but they were a long
way from a flight version.

Gene you surprise me man!  You let me off easy on that 1200 goof.  You are
getting soft in our old age pal.



More information about the extropy-chat mailing list