With 9 blades that are in a slanting axis so that they roughly follows a spiral around the center, would this device be similar to a pump, and turn (rotate) and gently pump the water down along the central axis as it contracts and squeezes itself together?

enter image description here


1 Answer 1


If it is primed so there is a stablished flow of water down with enough momentum, yes it will rotate while contracting and expanding acting like a fish swimming and will generate either pressure down to pump a central flux of water or will start to move up if free to move.

A fish swinging its tail to left and right, or up and down, creates propulsion and moves forward, by riding its own wake, as opposed to steering.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.