Comments by "Diana Pennepacker" (@dianapennepacker6854) on "The Genius of Bionic Bladeless Propellers" video.

  1. Agreed. Nature is very constrained based on the animal something descended from. Mammals are limited to generally four limbs, and a tail outside of what... An elephant? Just one example. I don't see anything can be better than a rotating blade for a big boats. Whether it is a water jet or a standard propeller. Spinning a rotor is very effienct these days, and simple.
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