Question for TGrayson

[Inverted25]

We has talked about Magnus Effect in my prior post. Now my question is this. With a sysmetrical wing, what caused the air to flow faster over the top instead the bottom?

 

[400A]

We has talked about Magnus Effect in my prior post. Now my question is this. With a sysmetrical wing, what caused the air to flow faster over the top instead the bottom?

With a PERFECTLY symetrical wing, you need an angle of attack to create the "fast slow" flow around the wing.

 

[tgrayson]

We has talked about Magnus Effect in my prior post. Now my question is this. With a sysmetrical wing, what caused the air to flow faster over the top instead the bottom?

The airflow around a symmetrical airfoil isn't different in principle from that around a cambered airfoil. The difference is a matter of degree, rather than kind. However, at zero AoA, the flow around the symmetrical airfoil already meets at the trailing edge, so there is no starting vortex created to initiate circulation around the airfoil. No circulation means no difference in velocity between the top and bottom, no net pressure differences, and hence no net lift.

 

[shdw]

We has talked about Magnus Effect in my prior post. Now my question is this. With a sysmetrical wing, what caused the air to flow faster over the top instead the bottom?

Ever seen a board get thrown through the air? See the wind blows it around when it hits the flatter side at some angle? That "some angle" is the angle of attack. Same basic principle with a wing. Even a rectangle 2x8 piece of wood can create lift if it is angled.

This lift is NOT because of deflected air.