[119066] in Cypherpunks
Re: Thieves steal six ballistic missiles in Poland (fwd)
daemon@ATHENA.MIT.EDU (Jim Choate)
Thu Oct 14 01:08:06 1999
From: Jim Choate <ravage@einstein.ssz.com>
Message-Id: <199910140507.AAA27644@einstein.ssz.com>
To: cypherpunks@einstein.ssz.com
Date: Thu, 14 Oct 1999 00:07:01 -0500 (CDT)
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Reply-To: Jim Choate <ravage@einstein.ssz.com>
----- Forwarded message from Sean Roach -----
Date: Wed, 13 Oct 1999 23:27:54 -0500
From: Sean Roach <roach_s@mail.intplsrv.net>
Subject: CDR: Re: Thieves steal six ballistic missiles in Poland
Could the mixture be tumbled in a drum with baffles, (like a clothes
dryer), to mix to that shake consistancy? That would save me from
having to stand over the mixing container with a wooden spatula
wondering when I was going to suffer from ringing of the ears and a
scorched face and arm.
[ If it'll blow from manual mixing I suspect something as violent as a
tumbling or bread dough mixing would be problematic as well. I'd be
looking for something that would put layers down in a rolling manner.
The other side is that such tumbling might mix some metal dust in the
air which could be quite interesting for a moment or so. ]
If I ever get around to this I'll want to do as much by remote
control as possible. Less chance of getting myself blown up.
[ It's really the shit that gets thrown a quarter mile away doing 90 MPH
that you've got to worry about. The suggested technique is to pour your
engines in a pit. It normaly takes two person, one who watches for
safety violations and holds the motor casing clamps and the other who
pours. You general want to do this sort of stuff using a metal rod.
Usualy both persons are laying on the ground face-down since this lowers
the change of getting hit by pieces flying up out of the hole. You'll
want flame-proof clothing and some impact protection (body armor). When
you test burn your first motors you want to be 45 degrees off the
longitudinal axis at the *rear* of the rocket. ]
I was hunting around the internet for plans to a decent jet engine a
couple years ago and ran upon a design that purported to use sound,
or rather the oscillation of three tuned tubes, nested, that also
served as the air intake, to compress the air. Evidentally the thing
worked off propane and was supposed to produce an incredible thrust
for its size and weight.
[ Check the Survival Research Labs site and review the Austin show. There
was a NG powered rocket go-cart that operated on just this principle.
Realy awesome, 0 to 60 in about 5 seconds. The tubes get cherry red and
it sounds like a V-1 pulse jet. They never would let me drive it.
Very cool. ]
Supposedly, the peaks of the three tubes vibrations formed some sort
of peristolic wave. The intake was at a 90 degree with the line of
the motor.
[ The SRL engine is a U-shaped tube. ]
I can't say for sure if it worked. I balked at the price that was
being asked for the plans. Nor do I remember the URL.
At 10:27 PM 10/13/99 -0500, Jim Choate wrote:
>This stuff is VERY DANGEROUS, it is so easy to kill oneself (e.g.
>forgeting to wipe the threads or seals with a cold moist rag). It is
>STRONGLY suggested that you pass this stuff right on by.
Noted. If I do it, I'll get some well tested instructions first.
Then wire up everything to be mixed and poured OVER THERE. Something
about telepresence seems so inviting when the alternative could be
the loss of life or limb.
[ Watch the sparks and contact points in motors and such. If you can afford
it get brass based tools as they won't spark if struck. ]
>Both NAR and Tripoli, as well as a search at Google on experimental
>rocketry, will point you to many more references. MIT has a very
>nice webpage that is a copy of a venerable design doc that describes
>the steps for making liquid fuel motors.
Seen it. Whoever wrote it seemed to get off on the noise they make,
not saying much about the horsepower at all. I had the whole book
mirrored on my home PC at one point or another. Pre-CD-E. 640M hard
drive. Had to clear it to make room for more important stuff.
[ The book I'm talking about is a 274k tarball. It covers several fuel
alternatives but uses gaseous oxygen and gasoline for their model. It
was written L. Krzycki in 1967, http://www.im.lcs.mit.edu/rocket/. ]
----- End of forwarded message from Sean Roach -----
____________________________________________________________________
The best lack all conviction, while the worst are full
of passionate intensity.
W.B. Yeats
The Armadillo Group ,::////;::-. James Choate
Austin, Tx /:'///// ``::>/|/ ravage@ssz.com
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