The design report

Empennage fabrication 5.4
Horizontal tail:
Figure 5.4.01 shows the position of the end plat and the servo plate during fabrication process
All parts of the horizontal tail were cut using the laser machine. In order to avoid any
twist in the structure, the following order of fabrication was observed.
The 4mm side ribs and the end plates were made by sticking two 2 mm ply ribs.
The 6 mm thick servo plate was made by sticking two 3mm parts together. The
glue was allowed to dry overnight.
All ribs were first stuck on to the web spar and the front spar. The slots on the
web spar made sure the ribs were straight and aligned perfectly.
The top and bottom spars were then added to the structure. All parts were stuck
on using AB glue and super glue.
The end plates were slotted and stuck in before attaching the end ribs.
The servo plate was then stuck on to the ribs in the middle.
Webs were then added to the structure.
Finally, 1.5 mm balsa sheets of exact measurements were stuck in the front to
make it easier to add skin.
The skin was then added.
Vertical tail:
The 5 mm thick vertical tails were made by sticking one 2 mm ply and one 3 mm
ply together. The glue was allowed to dry overnight.
The ‘L’ shaped support was made by sticking three 6 mm pine rods.
After the skin was introduced, a balsa sheet was glued on to the vertical tail
which was then glued to the fuselage.