Original Principles of flight discovered.
Rotating Wing, The Air Wheel,
The PixiWing, The Ornithopter?

THE GREEN ARROW INDICATES ANGULAR MOMENTUM, GENERATED BY GRAVITY & AERODYNAMICS.
The air-wheel spins, creating a low-pressure system, lighter than air which rises. Combined with the torque around the axel, this generates lift. A forward moving linear momentum, is created by spinning the angular momentum backwards, contrary to the direction a ground wheel naturally takes.

This paradoxical nature of aerodynamics is best observed by the way a golf ball spins backwards, creating a rising curve into the air.

At the same time, the pocket of air that surrounds it creates a buffer that deflects wind & turbulence. A stiff headwind will allow flight like a kite or paraglider, but with the advantage that angular momentum is conserved in the spinning wing, meaning that a sudden drop in headwind will not hinder flight as much as a fixed wing.
THE YELLOW ARROW DENOTES RESULTANT LINEAR FORWARD MOMENTUM & LIFT.

VERY LITTLE POWER IS NEEDED TO CONSERVE TORQUE & VELOCITY.

This simple model can be made out of a toothpick & a couple of business cards. The zig-zag pattern of the pixiwing, gives air-traction, which provides stability in a way similar to the tread in a tyre. The pointed tips, also give better air-traction, so long as the pattern is even.
Good Example

Bad Example
This wing has less stability, as it slews sideways in the same way that a smooth tyre does not keep in a straight line. The uneven wing (above, Good example) seems to cut the air in the same way the keel of a boat, or the fins of a surfboard, keep it heading in a perfect line. The bent foils also provide a more natural free-wheeling capacity to the axel.

A heavier axel provides a better conservation of angular momentum (torque) allowing a faster flightspeed. Stretching the depth of the wing outwards will slow angular speed. Contracting the wing inwards, creates higher angular speed, more torque, a sharper aerodynamic, and; more forward momentum & velocity.