Originally Posted by cubdriver
angle of the airstream the wing "sees"
Your mistaken, the resultant vector cannot be confused with the point where the force is applied. The wing doesn't see anything, just like the airplane doesn't feel anything. The wings AOA does not change from the resultant vector, it is based on the mean point where the force (relative wind) is applied.
Originally Posted by
Cubdriver
Wingtip vortices and circulation are one and the same thing. Ground effect interrupts this effect and there is less circulation..
Downwash is reduced, down wash is not the be all end all in flow patterns/circulation. Look up Coanda and Magnus effects, there are many advanced flow patterns happening around your wing.
If you want, here is another source.
Figure 8: Ground effect changes drag and lift.
Source:
Google Image Result for http://www.free-online-private-pilot-ground-school.com/images/ground_effect_drag_lift.gif
Sorry bud, even the random internet google searches are right here.