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Ian - >I read in New Scientist and saw a section in the Tomorrows World TV >programme (here in the UK) about a researcher working on an artificial >tuna. The research would be used to design more efficient underwater >propulsion systems for ROVs etc. The propulsion is more efficient because >more (all?) of the force of the "tail" movement is projected backwards >behind the "fish". With a standard prop alot of the force is projected >out to the sides, making propulsion less eficient. If you want to know >more I'll look up the reference in New Scientist Thanks for the offer. It would interesting to know what they say about it. I can understand how it's more efficient in terms of how it deals with the force of water... it just didn't seem as likely to be efficient in creating the effect. I could be wrong (er, actually, I'm often wrong), but I guess with all the new work with psezio-plastics, maybe it won't be too hard... you insert two slabs of p-p against the inside of a meta-tail, and when you apply current, it contracts, release current it releases. Alternating both sides may provide the effect. Interesting concept. -- Robert -------------------------------------------- E-mail: RLaird@pe*.co* (Robert Laird) Phone : 713-627-4323 Fax: 713-989-3086 Trunkline Gas Company, a subsidiary of Panhandle Eastern Corporation, Houston, TX -------------------------------------------- 01/10/95 15:36:57
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