A recent development in wind turbines.

A recent development in water impellers.'_screw

The Archimedes screw, not a golden ratio but can be adapted as such.

A ship impeller using the golden ratio.

Victor Shauberger inspired implosion propeller. Yes I know psuedoscience.. deal with it.

Egyptian impeller? You decide on that one guy.

I will turn this on it's head and attempt to use it to produce a low pressure zone over a wing and to provide propulsion.

This documentation describes Open Hardware and is licensed under the CERN OHL v. 1.2. You may redistribute and modify this documentation under the terms of the CERN OHL v.1.2. ( This documentation is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE. Please see the CERN OHL v.1.2 for applicable conditions