So i am a member of the club - despite planning not to, i have ended up dimpling the top flange on the innermost wing rib on one side (the rib underneath the wing walk doubler) - just the one rib, then i stopped!
I had planned to do this as per the plans and countersink the 0.032" skins, but since i've made this error i am wondering if it would be better to dimple all of the wingwalk doubler ribs, rather than squeeze out these dimples? (Noting that the innermost rib has nutplates for the wing gap cover, i would replace the K1000 nutplates with K1100 nutplates if i kept the dimples there).
The skin stack up at the 4 inboard ribs is:
0.032" Skin
0.025" Wing Walk Doublers
0.032" Wing Rib (or 0.025" wing rib for ribs 2-4).
Now, where the 2 skins meet in the middle of the wing, the stackup is similar (and these are dimpled):
0.025" Outboard Skin
0.032" Inboard Skin
0.025" Wing Rib
To this end, i made up the first stack as per the above, and one side i countersunk and the other dimpled, then cut them in half. Please excuse the quickly formed (and tipped over!) shop heads.
What does everyone think? I am feeling like there would be no issues with dimpling the skins / doublers / ribs as the image below looks like they nest nicely. (note that i used a Cleveland skin dimple for the top layer, and substructure dimples for the 2 lower layers).
Thanks in advance for any advice (especially if you chose to dimple under your wing walk doublers).
https://photos.app.goo.gl/8RybvooxXuvSBVcAA
https://photos.app.goo.gl/puuvoDx5q6XXPGqt7
I had planned to do this as per the plans and countersink the 0.032" skins, but since i've made this error i am wondering if it would be better to dimple all of the wingwalk doubler ribs, rather than squeeze out these dimples? (Noting that the innermost rib has nutplates for the wing gap cover, i would replace the K1000 nutplates with K1100 nutplates if i kept the dimples there).
The skin stack up at the 4 inboard ribs is:
0.032" Skin
0.025" Wing Walk Doublers
0.032" Wing Rib (or 0.025" wing rib for ribs 2-4).
Now, where the 2 skins meet in the middle of the wing, the stackup is similar (and these are dimpled):
0.025" Outboard Skin
0.032" Inboard Skin
0.025" Wing Rib
To this end, i made up the first stack as per the above, and one side i countersunk and the other dimpled, then cut them in half. Please excuse the quickly formed (and tipped over!) shop heads.
What does everyone think? I am feeling like there would be no issues with dimpling the skins / doublers / ribs as the image below looks like they nest nicely. (note that i used a Cleveland skin dimple for the top layer, and substructure dimples for the 2 lower layers).
Thanks in advance for any advice (especially if you chose to dimple under your wing walk doublers).
https://photos.app.goo.gl/8RybvooxXuvSBVcAA
https://photos.app.goo.gl/puuvoDx5q6XXPGqt7
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