Re: Sub-G thrust to orbit.

jimp_at_specsol-spam-sux.com
Date: 02/28/05 

Date: Mon, 28 Feb 2005 21:17:43 +0000 (UTC)

Uncle Al <UncleAl0@hate.spam.net> wrote:
> Brucebo wrote:
> >
> > Is is possible to make it into earth orbit using a sub-G thrusting
> > rocket motor together with a hypersonic lifting body?

> Walk up a ladder.

> > Assuming it is possible Newtonically, is it possible thermally,
> i.e.
> > would the vehicle burn up due to atmospheric friction before it reached
> > orbit?

> Artillery shells are entirely capable of being launched into orbit re
> John Bull. So? Calculate the acceleration of a 125-grain hollow
> point semijacketed round going from zero to 1250 ft/sec in six inches
> of .357 magum barrel. Now, pick your field artillery and don't ride
> in the shell - or do.

> Piggyback modes of orbital insertion, air breathing mothership then
> rocket, have been disappointing at scale. Look at the payload of the
> SR-71 Blackbird. The huge thing hardly carries more than its tankage.

And is capable of climbing straight up, for a while. 

-- 
Jim Pennino
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