----- Original Message -----
From: "Harry Veeder" <[EMAIL PROTECTED]>
To: <vortex-l@eskimo.com>
Sent: Sunday, February 11, 2007 9:29 PM
Subject: Re: [Vo]: "Bettery" on-the-way?
<snip>
There something called magneto-hydrodynamic propulsion for submarines.
Is that similiar to this NERVA/jet engine?
Harry
--------------------
You mean the 'worm' in The Hunt for Red October? That was a hypothetical MHD
drive for submarines. To my knowledge, no workable such system exists. It
relies on very powerful electric and magnetic fields intercating on
conductive sea water. You expel mass of water like a ramjet, the aircraft
analog. Burns fuel like crazy, except for ion thrusters which have small
thrust but can reach very high speeds.
Mike Carrell
