Re: [PSUBS-MAILIST] Unusual propulsion system

[Jon Hylands <hylands@ibm.net>]

On Sat, 19 Aug 2000 18:46:16 -0400, Jon Hylands <hylands@ibm.net> wrote:

> For a full-size fish sub, I don't think Nitinol would cut it. Its too slow,
> because it has to cool down in order to contract. I don't think you could
> actually put the wire in water to cool it that way. The typical cycle time
> is 2 seconds contraction, and then 12 seconds to contract.

Boy, I gotta teach myself to write someday :-)

It has to cool down in order to *expand*.

The typical cycle time 2 seconds contraction, followed by 12 seconds to
expand again.

Later,
Jon

--------------------------------------------------------------
   Jon Hylands      Jon@huv.com      http://www.huv.com/jon

  Project: Micro Seeker (Micro Autonomous Underwater Vehicle)
           http://www.huv.com