Schauberger's engine

The author of the book gives a brief description of the real design of aircraft engine. Probably, this design is not similar to Schauberger's one. However the very appearance of some ideas is rather interesting. Different people in different places and time come to the same conclusions. Whether people think in a common way, or Nature laws are the same. Could you believe that the author of the article has never read or heard about Schauberger's works (I mean his engine, which operates on environment energy and has levitation properties)? But by accident (thanks to Internet) when come upon the description of designs, I was surprised to find so much in common between Shauberger's ideas and my suppositions.