DG Flugzeugbau DG-1000M Посібник з ремонту - Сторінка 11
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Instructions for FRP repairs
5.1 General
See also section 2 and 3.
Only materials listed in section 4 should be used.
Only damage defined in section 2 should be repaired.
Cut out damaged area, roughen the surrounding area for the overlap
required (see section 6).
Repairs should be made such that bonding is wet over dry. Specific details
concerning handling and using fibre reinforced plastics can be obtained
from various publications ie. "Petite Plane Patch Primer."
The use of Carbonfibre is the same as for glasfibre, except that the
Carbonfibres should not be kinked.
All repairs should be postcured for 20 hours at 54°C (129°F) before the
next take off.
5.2 Repairs of a FRP shell
Prepare the repair area as specified above. Scarf the shell so that the
individual layers of fabric can be seen like plywood layers. Remove the
gelcoat for at least 20 mm (.8 in.) around the damaged area.
New lay-up as shown on the sketch.
outside
5.3 Repairing the outer skin of a foam sandwich panel
Cut out the damaged area, remove the gelcoat over the overlap area +10
mm (0.4 in.) around the damaged area. Fill the damaged foam area with
resin thickened with microballoons (microballoons-resin), let harden. Sand
down.
Heat the area around the hole to approx. 60°C (140°F). Then tap the outer
skin with a round headed hammer so that the foam is somewhat
compressed. Apply the new cloth.
Issued December 2010
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
Repair manual DG-1000
5.1