Quick bp/w advice, what size wing?

[SangP]

I do agree with Laura (scootergirl) a doughnut shape wing does help in circulating gas. Even using long alu cylinders, which press against the lower wing, gas does move around the wing better than with a horseshoe.

SangP

 

[cool_hardware52]

I do agree with Laura (scootergirl) a doughnut shape wing does help in circulating gas. Even using long alu cylinders, which press against the lower wing, gas does move around the wing better than with a horseshoe.

SangP

Please explain how this is possible.

Many people have had the experience of using a poorly designed horseshoe wing, one poorly shaped, i.e. triangle shaped or one with square corners, or one that's way to big, (94 lbs anybody?) or worse yet a huge horseshoe with a 10 inch wide center panel with a single cylinder.

Of course these horseshoe wings were hard to use, but it's not because they lack a lower connecting arc.

Will a donut wing with a better over all shape, with appropriate capacity and a narrow profile vent better? Of course, but not because gas is magically going downhill through the lower arc.

A correctly designed, properly sized, narrow profile horseshoe or donut wing will vent just about the same.

Tobin

 

[SangP]

The lower part of the wing isn't completely compressed to the point that no air can pass through.

To enable the flow of air, all that needs to happen is for the highest part of the wing to be in at the same height as the bottom part of the wing. Even with my floppy top eclipse wing, I just go a little head down reach back, press down the top a bit and I can move air anywhere I want.

SangP

 

[Kern]

The lower part of the wing isn't completely compressed to the point that no air can pass through.

To enable the flow of air, all that needs to happen is for the highest part of the wing to be in at the same height as the bottom part of the wing. Even with my floppy top eclipse wing, I just go a little head down reach back, press down the top a bit and I can move air anywhere I want.

SangP

We keep getting back to, "a little bit head down". Which isn't so different to, a little bit head up. Except that the upper arc is higher than the lower arc & therefore requires less movement away from horizontal to move air around the wing.