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Run Silent, Run Swift |
| Section: NATURAL SCIENCE / AT THE EDGE |
| Author: Marsha Freeman |
| Publication: The world & I online |
| Issue Date: 1/1/1993 |
| Size: 2,446 Words, 15,212 Characters |
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The silent submarine in Tom Clancy's Hunt for Red October was only fiction, but last June the Japanese ship Yamato 1 made its sea Trials, becoming the first MHD-propelled silent ship in the world. The magnetohydrodynamic, or MHD, thruster has no moving parts, which accounts for the quiet. As a scientific principle, MHD has been known for over 150 years. But the Yamato 1 is the first commercial prototype of this promising technology.
The same characteristic of MHD technology that makes it silent--no moving parts--makes it an efficient way to propel a ship, or to produce electricity. The basic principle involves the interaction of magnetic and electrical fields with an electrically conducting fluid. In the case of ship propulsion, an electric current is applied perpendicular to a magnet...
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...ch efforts. In addition, cooperation is being sought with the European countries pursuing MHD, and with China, Israel, Australia, Japan, and other Asian nations.
MHD has had to overcome many technical and budgetary hurdles in the past three decades, all over the world. A renewed effort to combine resources and talent internationally will bring this technology to fruition more quickly. vbcrlf
(806 of 15,212 characters)
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