Matt wrote: > "Explanatory Notes for Resistance and Propulsion Data", published by > SNAME, > but the $25 entrance fee to buy it brought me up short. It wasn't you who > proposed this term was it John? In any case, I'm betting the term wasn't > adopted but was only proposed.] Wow! $25.00. That should scare most kayak designers away :-) No, Matt, I did not propose it. The Hydrodynamics Committee of SNAME produced the report as part of project H-2. You lose the bet. > Looking up "fineness ratio" on Google, it appears to be mostly used in > aerodynamics to mean the ratio of length to diameter. In the relatively > few > instances it was used in surface craft it seem to be used as the waterline > length to waterline width ratio rather than as the displacement/length > ratio. John, if you have a copy of "Explanatory Notes for Resistance and > Propulsion Data" could you tell us the exact definition given these terms > "fatness" and "fineness" ratios as written there and if they have been > adopted or rejected or are in limbo (that is, merely proposed)? The exact definition of Fatness ratio is the volume of displacement divided by (0.10L)^3 as I stated earlier. The Fineness ratio is L / cube root of the volume of displacement. Both found on page 8 of "Explanatory Notes for Resistance and Propulsion Data" You can't find everything by looking it up in Google I guess. . Cheers John Winters *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
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