Chapter 4 - Horizontal empennage
4.1 - Assembly preparation
Page 31
Cut the elevator ribs from the 3/8prepreg panel using the templates provided. Note
that the bottom of the spar is angled such that each piece should be marked so the spar
can be mounted correctly. Positioning is carried out by the top edge of the spar, this is up
in the assembly. The positioning of the elevator ribs is similar to the horizontal stabilizer
except for the BL-5 L and R ribs. These are positioned with the inner face on the
designated line as follows:
This angle can be accomplished by cutting the outer shell and removing the core
material forming a small angle which makes the rib bendable. To maintain the angle
during gluing, it is advisable to add a small piece of wood with screws going beyond this
one and the rib in the straight and angled region (better seen in the figures below).
This way we have the complete positioning of all the ribs for the assembly.