Originally Posted by
Lyman
Air is the recipient of added energy, not the source. Watch your landscaper blow debris about with a leafblower, you will perhaps see my point.
The source of added energy is not important? Strange viewpoint from an expert.
Although I don't want to get involved in this somewhat personal argument I'm afraid he is right insofar as for the balance inside a certain frame of reference it is absolutely irrelevant which of the two is moving.
Example?
The fact that the surface of mother earth is moving at 1500km/h plus at the equator has no influence on the behaviour on the airfoil either. Aerodynamic behaviour at the North pole will be the same.
You get the point?
And btw. you don't create energy, you don't lose it, you can only change the form in which it is present. And that also depends on the frame of reference.