Henry Spencer wrote: > > On Thu, 1 Aug 2002, David Weinshenker wrote: > > for a "hybrid" reusable/expendable profile... if you're not doing > > a sample return, but just trying to radio back some high-resolution > > images of the item against the star field, then it might be reasonable > > to use a reusable suborbital booster with a single-use upper stage. > > Better yet, a reusable *orbital* booster with a single-use upper stage. > (To quote Max Hunter: "I like staging, but I want to do it in orbit.") > > > (What would typical mission delta-V from earth surface be for a > > flyby of a nearby asteroid?) > > If you're talking about a flyby as the asteroid passes -- so the probe > just needs to be in the right near-Earth place at the right time -- then a > reasonable rule of thumb is to take an orbital delta-V and add 3km/s.
Hmmm... so total of just under 13 km/s (assuming that it takes almost 10 to get to orbit)... I remain agnostic on the question of whether it's practical to build a useful SSTO, but this would definitely need to be a multi-stage mission one way or another. -dave w _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
