Matt Whiting wrote in
:

wrote:
flightoffancy wrote:
In article ,
says...
The air through the rotor disk of a gyrocopter flows upward, yet
gyrocopters fly.


I wrote "helicopter" -- not gyrocopter.

They are not aerodynamically the same.

I know what you wrote and I know they are not the same.

The point is that any theory that says an aircraft flys by forcing
air downward fails to explain how gyrocopters and gyroplanes fly.

How so? Just because the airflow is up through the gyro disk, doesn't
mean that the air isn't deflected downward by the passage of the rotor
disk. Did you ever notice how much AOA a gyro disk has? Think about
why this is?


The alpha is in the blades, not the rotor.



Bertie