Anthony replied to me: > Actually getting stuff into orbit is tough. Hello Anthony,
it would be pointless to mine an asteroid if both the mining camp and the output are drifting back into deep space. > > Earth to Ceres is a minimum of 17 kps, while Earth to Pluto (as a > > stand-in for a generic comet) is 22 kps. Call it 15 mps, then. > > What are you using for hohmann transfer orbit solving? A hohmann > transfer orbit from 1 AU to 2.76 AU is 11.2 kps, not 17 kps, and from 1 > AU to 39.3 AU is 15.5 KPS (and takes 45 years), not 22, so your method > is either wrong or including calculations of other costs. If you've got > enough thrust to take advantage of the Oberth effect, which you probably > don't, you can cut that down sizeably, as most of the delta-V is for > circularizing your orbit at 1 AU. I was using this table, but it seems I took the wrong line: http://www.projectrho.com/rocket/appmissiontable.php#id--Erik_Max_Francis'_Mission_Tables--Delta_V_Required_for_Travel_Using_Hohmann_Orbits Regards, Onno _______________________________________________ GurpsNet-L mailing list <[email protected]> http://mail.sjgames.com/mailman/listinfo/gurpsnet-l
