Re: possible silly questions

muser wrote:
>
> I was talking to a friend and we were discussing the earth's
> atomsphere, does a rocket need a special trajectory to leave earth's
> atomsphere? I know it needs one to come back. How many miles are we
> from space, (in miles) from the earth's surface.

Up to leave, over to orbit. Look at a Space Scuttle Launch (OK, look
at tapes, at the launches that worked). Coming back is easy.
Surviving it is something else. Didn't you ever wonder why sci-fi
rocket ships came back *** first? Re-entry frictional heating is
higher in temp than rocket exhaust. The flame is coolant. One then
has an obvious alternative.

Florida launches equatorial orbits eastward for the obvious reason.
Vandenberg lauches polar orbits (surveillance).

Space Officially starts at 50 miles above sea level.

--
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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