Matt, I have never seen this formula before. It is possible that within certain restraints it is a reasonable approximation for quick-and-dirty comparisons. What it is basically saying is increased beam adds drag faster than increasing length. While I don't know that I would use it for any critical analysis, the idea that beam increases drag faster than length, is reasonably sound. Nick On Mar 5, 2005, at 11:46 PM, Matt Broze wrote: > I read this somewhere and asked the author where the formula below came > from. > > "Residual resistance (Rr) varies as the square of the Beam (B) and the > first power of Length (L): Rr = B^2L." > > I was told the formula came from someone who is a member of > Paddlewise. Can > anyone tell me if this is a correct formula, and if so where it can be > found > in the literature of Naval Architecture (so that I might be able to > read > more about it). It doesn't look right to me but maybe there is > something > similar out there and this is a typo (or something else is involved). > > Matt Broze > www.marinerkayaks.com > Nick Schade Guillemot Kayaks 824 Thompson St Glastonbury, CT 06033 USA Ph/Fx: (860) 659-8847 http://www.guillemot-kayaks.com/ *************************************************************************** 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/ ***************************************************************************Received on Sun Mar 06 2005 - 07:07:26 PST
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