Thanks a lot for the document
The wing+cover vs aeroshell reminds me my car
with/without her plastic back 
Simple dumb tuft testing showed me that the plastic back makes the air flow more calm with the plastic back than without it, and when the plastic back is straighter. Sadly with heat the plastic lengthen and the tape doesn't stay as solidly on the plastic than on the chloroplast...
Whatever the piece you build, make it strong and fix it strongly.
Have fun,
Denis.
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