Re: Sub-G thrust to orbit.

From: Uncle Al (UncleAl0_at_hate.spam.net)
Date: 02/28/05 

Date: Mon, 28 Feb 2005 15:33:41 -0800

jimp@specsol-spam-sux.com wrote:
>
> 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.

As could the U-2 on takeoff. Both were so constrained for payload
that there was serious talk about giving the pilot an enema pre-flight
to save weight. 

-- 
Uncle Al
http://www.mazepath.com/uncleal/
 (Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf

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