Weapon Naming Madness!

2 posts ยท Mar 17 1999 to Mar 17 1999

From: djwj <djwj@e...>

Date: Wed, 17 Mar 1999 02:25:51 -0700

Subject: Re: Weapon Naming Madness!

> Oerjan Ohlson wrote:

> In the same collection of symposium proceedings I mentioned above, DERA

The only Railgun I was introduced to was my dad's homebuilt. It did not use
the plasma to propell a slug, but used the plasma as a projectile itself. I
haven't really had the time to look in on the latest technology in Railguns.
In effect I knew of using a powder slugthrower without the slug.

> This is pure fantasy. Railguns - what you call "Gauss" guns ....

I do not claim Railguns and Gauss guns are the same thing. With what I have
recently learned Railguns use metal plasma as a propellent, and accelerate the
already expanding plasma with the magnetic field. Gauss guns use the magnetic
field itself as a propellent, theoretically running much cooler than an
equavelent Railgun, but as you said there isn't much out on working Gauss guns
(what you called Coilguns). Some space exploration scientists and companies
(which ones at the moment excape me, try any of the major colleges, especially
in california, or Florida Institute of Technology, right next door to Cape
Kennedy Space Center) theorise using a gauss mass driver to propell cargo
containers made from a certain composition from a low G planetary body (Luna,
the asteroids or the martian moons), the recieving craft can simply drop the
empty containers from orbit. This is typicaly used in extraterrestrial mining
concepts to avoid trying to ship or generate masses of engine propellent. I
haven't had the time to look in on this recently, and am not entirely sure
what new has come of it if anything. It may have been usurped by classified
projects looking into making a weapon
out of it, I wouldn't be suprised ;-)

From: Oerjan Ohlson <oerjan.ohlson@t...>

Date: Wed, 17 Mar 1999 17:56:38 +0100

Subject: Re: Weapon Naming Madness!

> Jim Whitehead wrote:

[snip]

> >This is pure fantasy. Railguns - what you call "Gauss" guns ....

This is, again, not what is normally meant with a "railgun" by today's weapon
developers. Several others have sent URLs to websites where the railgun
principle is described so I won't repeat it here, but any metal plasma in the
bore comes from parts of the sabot vaporising. It is a
bi-product, not the propellant - the driving force is purely
electro-magnetic.

Some railgun designs use gas pressure (not a plasma; any gas -
including powder gas - works just fine) to give the projectile an
initial velocity before the driving current is turned on, in order to avoid
welding the projectile stuck onto the rails and to get a smoother shot; this
may be what you are thinking of.

Regards,