Yes, I love that piece. Another more wider ranging article on cost lines is:
"Why are launch costs so high"? http://www.ghg.net/redflame/launch.htm It's got some very interesting bits, particularly when he talks about the safety of LOX... not sure I agree with his conclusions overall. I would be interested on this groups opinion on how the behaviour of LOX compares with HTP though. Another web page is at: http://members.axion.net/~enrique/spacecraftcost.html Which is a crude model of rocketry costs. For example a two stage reusable HTP rocket: http://members.axion.net/~enrique/spacecraftcost.html?acceleration=49.0&altitude=0.0&velocity=0.0&empty=10.0&latitude=28.3&locationLabor=1.0&mass=300000.0&secondAcceleration=29.4&secondEmpty=10.0&secondReusability=120.0&secondExhaust=2872&secondPayload=1.2&structureTon=8000000.0&temperature=293.0&recalculateOnChange=false Giving an estimated cost to orbit of about $247/kg or so. (And there's nothing particularly optimal about this design.) Michael Wallis wrote: >Hi ... > >Here's a truly fascinating look at the economics of putting Max Hunter's >"Massive Mission Model" into action. > > http://www.fourmilab.ch/documents/rocketaday.html > > Michael > >---------------------------------------------------------------------- >Michael Wallis KF6SPF (408) 396-9037 [EMAIL PROTECTED] >President, Wallis International http://www.wallis.com > >Emerson: >"Ideas must be carried out through the hands and the arms of good and > brave men, or they are no better than dreams." >_______________________________________________ >ERPS-list mailing list >[EMAIL PROTECTED] >http://lists.erps.org/mailman/listinfo/erps-list > _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
