Traditionally, windmill's blade is calculated from aerodynamics.
I was told that there was no room for an amateur to intervene in regards to the wing (blade), so I had tried making an airplane from the windmill theory to prove my theory.
It is said that a long and thin blade is more efficient, but in my own experiments, I could not understand the common knowledge that the lift force was generated due to the difference in flow speeds between the lower and upper surfaces.
How can I deny them? At that time, I thought that if a wingless aircraft could fly freely, it would be possible to prove that the wing theory was not utilized, therefore I made about 600 airplanes to fly freely without wings.
Until now, experiments have been completed up to a 3.6m, 50kg aircraft 'Flying Boat), and we are currently working on a 6m aircraft.