Chapter 4 - Horizontal empennage
4.2 - Component lamination
Page 33
4.2
Component lamination
4.2.1
Spar lamination
4.2.1.1
elevator spar
Apply a strip of 4x20 inches of prelam of 3 layers on the rear surface of the spar
from BL-10 L to BL-10 R covering the spar completely and overlapping the liner by at
least one inch of extension in the area of the phenolic insert and overlapping the outer
sections of the spar. Apply some resin to the spar (back face) and to the liner near the
junction of the two (one inch each side on both surfaces). In this area, place a 2-inch wide
by 114-inch long BL-57 L to BL-57 R prelam strip overlapping each surface by one inch
and also over the previously added material. To support the spar in its proper position
during curing, glue temporarily BL-30 L and R rib in place with epoxy brush strokes 5
minutes . Remove any air bubbles with a brush. Cut the corners of the prelam that exceed
the surface of the spar when the resin cure to an elastic state .
4.2.1.2
stabilizer spar
Clean and roughen the bottom surface of the spar if you have not completed this
step previously. Prepare a wet FLOX paste and pass over this surface. Position the spar
in place and allow it to cure.
4.2.2
Rib lamination
Sand the sides of the ribs to make the surfaces rough for gluing and check that the
undercoat is also prepared (description in item 4.1 ).