This is the weirdest engine I have ever seen. According to Duke Engineering, their axial engine is the most efficient and lightest engine you can put in boats, light aircrafts, and generators—the mechanical engine of the (near) future!
“There is no other motor as efficient as the Di Pietro Rotary Air Engine. It is more efficient than any other air powered engine built to date and its high torque makes it the first air engine suitable for mobile applications.
Protean Electric : une roue à moteur électrique embarqué
NIKOLA TESLA -(Tesla Radiant Energy Generator,Tesla Coil Plan,Tesla Dynamo-electric Machine) At the end of the Tesla Secret e-book, there was a section showing the classic Tesla generator plans retrieved from the patent office. The plans consist of the radiant energy generator, Tesla coil, dynamo-electric machine etc.