Folie 12 von 21
Notizen:
We can clearly see that again, while the flaps are not lifted off the surface, they do not have any negative effect, neither on the lift nor on the drag coefficient.
But more importantly, beyond the critical angle of attack, the lift generation could be kept more or less constant for another 10 degrees increase in the angle of attack.
After that the lift dropped, which was due to the flaps not being lifted off the surface anymore.
Now, of course we were interested in the mechanism of these 'eddy-flaps' as we call them.
In order to find out about it, we measured the pressure distribution on the aerofoil without and with flaps attached.
