Quickie Q2 Lite, Construction Manual

Page: 82 / 299

repaired. The leading and trailing edges of flying surfaces (wing,
canard, vertical fin) should be free of delamination.
3.9 MULTIPLE DEFECTS
..... Where multiple types of small defects occur in a laminate
(voids, fiber dislocations, and lean areas for example), they should
not exceed a total of 10% of the surface area of the laminate, or 20%
of the wing chord at any one spanwise position.
4.0 REPAIRS
..... There are seldom single defects so massive that a major
component must be scrapped. The repair procedures described here may
be applied throughout the QUICKIE and Q2 composite sandwich
structures.
4.1 SMALL VOID REPAIRS
..... Voids up to 2 inches in diameter may be repaired by drilling a
small hole into the void and injecting the void full of epoxy. A vent
hole opposite the injection point is required to allow air to escape.
4.2 LARGE DEFECTS
..... Excessively large voids, lean areas, finishing damage, fiber
disruptions, major fiber wrinkles, or service damage may be repaired
using this procedure. Remove the rejected or damaged area by sanding
or grinding the taper the glass laminate on a slope of approximately
1 inch per ply in all directions. The plies are visible as the
sanding is done. The tapered glass edges and surrounding two inches
of glass surface must be sanded completely dull. Damaged underlying
foam should be removed and the void filled with a dry
microsphere/epoxy mixture or a replacement foam piece. The damaged
area is then laminated over using the same type and orientation of
glass plies removed, each ply lapping onto the undamaged glass at
least one inch. The whole repair area is covered with an additional
bi-directional glass ply.
4.3 DELAMINATIONS
..... A delaminated joint should be spread_ the mating surfaces
sanded dull, gap filled with flox (epoxy/flocked cotton mixture)_
then clamped shut while it cures.
5.0 MATERIALS
..... Since a wide range of similar appearing materials exists which
exhibit substantial differences in physical (structural) properties,
Quickie Aircraft Corporation has established a distribution system to
provide the amateur builder with proven acceptable materials. Quickie
Aircraft Corporation strongly discourages the substitution of
materials. Homebuilder substitutions for the basic structural
materials constitutes major structural modification to the Q2 design,
and could adversely effect flight safety.
6.0 APPLICABILITY
..... These acceptance criteria are different from and, in some
cases, much looser than for similar structures found in sailplanes
and other contemporary composite structures. These criteria apply