SZD-54-2
„Perkoz”
TECHNICAL SERVICE MANUAL
SECTION 17.
SAILPLANE REPAIRS
Issue II
April 2014
Revision
Allstar PZL Glider Sp. z o.o.
Doc No. 542.4.02
page 17.13
corrected
17.3.2.
Solid laminate shell
Fig. 17-13. Solid laminate shell damage
Fig. 17-14. Repair of solid laminate shell
In case of damage to the solid laminate shell (Fig. 17
‒13.), the repair should
be performed as follows:
smooth the edges and make them regular shape,
measure thickness of the damaged structure and make a chamfer with a length of
30 times larger than the measured thickness,
secure the hole by sticking the supporting plate of thin composite or plywood to the
shell on its inner side (Fig. 17
‒14.) and pull it upward with wire or suction cup,
after plate glue joint hardening, laminate the shell in acc. to Fig. 17
‒14., keeping
fabric layout provided in Fig. 17
‒1. ÷ Fig. 17‒6.
17.3.3.
Debonding
After removal of old glue joint in debonding area and its cleaning, the repairing
process comprises on re-gluing of the surfaces with laminating composition
thickened with filling materials listed in item 17.5.
Until hardening process is completed, glued surfaces need to be immobilized
with respect to each other, for instance trailing edges by spring clamps through two
slats, leading edges by bands loaded with weights or rubber strips.
