Quote:
Originally Posted by freebeard
The top of the wingy-thingy is about right (~12°), the tumble-home of the sides is good.
I'd stretch a black mesh over the opening to make a perforated base plate. Easily undone for A-B-A testing.
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So you mean close of the bottom, underneath the top surface of the spoiler, to prevent air exiting thereby causing a high pressure area that the air stream sees as similar to being a kamm back of 12 degrees?