Tuesday, April 9, 2019

Chapter 13 Step 11 Top Cover

I'm deviating from the plans a little here and am shaping the canard cover with the nose cover.

Template for the fuselage top cover made from the M drawings.   

(not per plans) - I'm making the canard cover during the same step as the nose cover to avoid making an exaggerated hump over the canard.


Clark foam is hard shelled with micro.

Door pattern drawn in pencil, then box tape applied over the top.

4 mil plastic was laid over the nose and traced on with a Sharpie.   Two peel ply sheets were cut to go on top and bottom of the lay up.

The glass weighed 4.6 ounces which wetted perfectly between two sheets of 4 mil plastic.

Some epoxy was brushed on the box tape, then the first layer of peel ply was applied.  The layup was applied, top layer of plastic replaced with peel ply and squeegeed.   The pencil pattern can be seen through the translucent glass.   After cure, the door pattern is traced onto the top layer of peel ply.   The top layer of peel ply is left on for the next step.

After cure, the cover is pulled off the box tape.   Bottom layer of peel ply removed.    A fresh layer of peel ply is laid over the box tape.   1" wide BID tapes, 3 layers is applied to the edges of the door.




The cured cover is placed on the wetted 1" tapes and left to cure.  The pencil marked top layer of peel ply helps align the cover and left to cure.
Another blog entry covers more of the nose door task...

I opted to use Camlocs to secure the door and added a lip on the forward edge.  A foam core was added for stiffness.  





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