Hi All… Just thought I would revive this old tread with an up date.

Early this summer one of the more adventurous in our group had some limited success with the screen covered wing. He used an old overweight Kadet Mark 2 fuse, a leftover semi symmetrical wing with a self designed airfoil, and old worn out beater of a 40 2 stroke. As you can see by the chosen test bed, he was not overly confident in the end result.
The leading edge of the wing was balsa sheeted top and bottom and remainder of the wing was covered with screen, top and bottom. The entire wing was then covered with film.

The plane was test flown successfully. For each subsequent flight 2 bay sections of film was removed. The plane flew each time with a continuing decline of performance.
With the last 2 bays of screen removed the plane did not have enough runway to get of the ground. Those there to witness, all agreed that a stronger 40 would have defiantly put the plane in the air.

When flying the plane was predictable however it was very sluggish. The power-off sink rate was impressive.
The result however entertaining for those of us present is inconclusive in so much as the critical area of the wing was balsa sheeted. Perhaps screen sheeting on the leading could provide the next chapter… bert