Mxsmanic wrote:
writes:
When in straight and level flight, the air flow through the rotor blades
of a gyrocopter is upward.
But the net movement of air is downward for the entire aircraft, which is why
it flies. The rotor acts as a large airfoil.
The disk defined by the rotor blades of a gyrocopter or gyroplane is
tilted slighty back.
The air always enters from the bottom of that disk and exits from the
top.
If it doesn't, the aircraft stops flying.
There is nothing after leaving the rotor disk to change the direction
of air flow.
The airplane, helicopter, gyrocopter, and gyroplane all fly straight
and level for the same reason and it isn't air being deflected
downward.
--
Jim Pennino
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