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View Full Version : I'm confused, which is nothing new. Wing Twist



southwind32
10-22-2017, 09:46 PM
14379

Per the drawing, a 1/2 block is inserted under the rear spar, which would put a twist resulting in a lower angle of incidence at the tip (washout) which is the way it should be.........right? The trouble is, a page or two later, it says we're building the wing upside down, and reference the above drawing. If that's the case, and the above drawing is showing the wing upside down, then the incidence at the tip would be greater instead of less then the root..............or am I missing something here...........been working all day, so maybe I'm not catching something that is obvious........been there, done that before.
Thanks
Brian
PS, I'm having to build the wing, right side up, due to the top stringer being in the way to lay the outboard spars level on the saw horse.

jrevens
10-23-2017, 12:56 AM
Hi Brian,

Despite the statement about building the wing upside down and the reference to that drawing, the drawing is identified as showing a right wing, and also identifies the rear spar and the root end, so it (the drawing) is obviously showing the structure right side up, and it is correct.

southwind32
10-23-2017, 07:21 AM
Hi Brian,

Despite the statement about building the wing upside down and the reference to that drawing, the drawing is identified as showing a right wing, and also identifies the rear spar and the root end, so it (the drawing) is obviously showing the structure right side up, and it is correct.

Thanks, about midnight last night, I finally saw the "Right Wing Shown" in the lower right hand corner. I was aware of the rear spar ident...........makes sense now. Thanks again.........I'm un-confused for the moment.
Brian