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More Efficient Fan Blades Mimic Humpback Fins

Nov 14, 2009 7:57 pm

re: re: More Efficient Fan Blades Mimic Humpback Fins

Ken Hilving

It would be interesting to know how this compares with the props on nuclear submarines. Silent operation has always been a big feature in the game of submarine hide and seek.

The idea of a pedal powered kayak is intriguing. I would think even a recumbent pedal position counter to the low draft profile of a kayak.

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