Description of the Airplane and its Systems

7.2.
AIRFRAME
DA20-100 ‘Katana’ 4X Manual
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The GFRP-fuselage is of semi-monocoque construction. The fire
protection cover on the fire wall is made from a special fire retarding fleece,
that is covered by a stainless steel plate on the engine side. The main
bulkhead is of CFRP/GFRP construction. The metal instrument panel
permits the installation of instruments up to a maximum weight of 25 kg (55
lbs.).
The GFRP-wings are of semi-monocoque sandwich construction, and
contain a CFRP-spar. The ailerons and flaps are made from CFRP and are
attached to the wings using aluminum hinges. The wing-fuselage
connection is made with three bolts each. The so-called A- and B- bolts are
fixed to the fuselage's root rib. The A-bolt is placed in front of the spar
tunnel, the B-bolt lies near the trailing edge. The two main bolts are placed
in the middle of the spar tunnel (main bulkhead). They are accessible
between the backrests and can be inserted from the front side. A spring
loaded hook locks both bolt handles, thereby securing them.
The rudder and elevator units are of semi-monocoque sandwich
construction. The vertical stabilizer contains a folded-top antenna for the
radio equipment, the horizontal stabilizer contains an antenna for the NAV
equipment (VOR).
DESCRIPTION
7.2.1
FUSELAGE
7.2.2
WINGS
7.2.3
EMPENNAGE