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DG Flugzeugbau DG-800S Repair Manual

DG Flugzeugbau DG-800S Repair Manual

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DG Flugzeugbau GmbH
Otto-Lilienthal-Weg 2 / Am Flugplatz • • • • D-76646 Bruchsal • • • • Germany
Postbox 1480, D-76604 Bruchsal • • • • Germany
Tel. 07251 3020-100 • • • • Telefax 07251 3020-200 • • • • eMail: dg@dg-flugzeugbau.de
Spare part and material sales: Tel. 07251 3020-270 • • • • lager@dg-flugzeugbau.de
www.dg-flugzeugbau.de
REPAIR MANUAL
FOR THE
SAILPLANE
DG-800S
Model: DG-800S
German Data Sheet No.: 384
Issued: April 1997
Approval of translation has been done by best knowledge and
judgement.
In any case the original text in German language is authoritative
0

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Summary of Contents for DG Flugzeugbau DG-800S

  • Page 1 DG Flugzeugbau GmbH Otto-Lilienthal-Weg 2 / Am Flugplatz • • • • D-76646 Bruchsal • • • • Germany Postbox 1480, D-76604 Bruchsal • • • • Germany Tel. 07251 3020-100 • • • • Telefax 07251 3020-200 • • • • eMail: dg@dg-flugzeugbau.de Spare part and material sales: Tel.
  • Page 2 Repair manual DG-800S Record of revisions No. Page Description Date Signature Issued: April 1997...
  • Page 3: Table Of Contents

    Repair manual DG-800S content page issued Preface April 97 Definition of minor damage April 97 Tools and facilities required April 97 Material list for F R P repairs April 97 " " " " April 97 " " " "...
  • Page 4: Preface

    Repair manual DG-800S Preface The purpose of this repair manual is to provide basic repair instructions for minor damage to GFRP and CFRP gliders. (Glass and Carbon fibre reinforced plastics). Detailed information regarding all the processing of GFRP and CFRP is not given in this manual assuming that all repairwork will only be carried out by people with practical knowledge in the use of these materials.
  • Page 5: Definition Of Minor Damage

    Repair manual DG-800S Definition of minor damage Only the damage listed below can be considered as minor damage repairable by oneself. Any damage limited to gelcoat or filler. Holes in the fuselage underside where the average diameter does not exceed: Forward fuselage 80 mm (3 in.)
  • Page 6: Tools And Facilities Required

    Repair manual DG-800S Tools and facilities required Tools - Accurate scale for the correct mixing of resin and hardener - Containers and wood mixing sticks - Brushes (short hair) to apply the resin - Metal roller to press down the glass cloth and to force the air out to...
  • Page 7: Material List For Frp Repairs

    Repair manual DG-800S Material list for FRP repairs Resinsystems for repairs Resin - Bakelite Rütapox L 20 with Hardener - Bakelite Rütapox SL 50 - mixing ratio 100:30 by weight or resin - MGS L 160 with hardener - H 163...
  • Page 8 Repair manual DG-800S Carbonfibre tape Sigri KDU 1009 7.5 cm (3 in) wide Carbonfibre rovings TOHO or TENAX HTA 24000 Diolenfabric (as core in the flaperons) C. Cramer style 14 K (158 g/m²) Foam Diab Divinycell H 60 colour green Röhm GmbH...
  • Page 9 Repair manual DG-800S Glue for Plexiglas To attach the canopy: glue Casco Nobel 1805 Foss Than 2K hardener Casco Nobel 1821 Curing Agent mixing ratio 3 : 1 by weight 2 : 1 by volume thickened with Aerosil. To repair cracks in the canopy: Röhm Acrifix 92 which hardens by exposure to light.
  • Page 10: Instructions For Frp Repairs

    Repair manual DG-800S Instructions for FRP repairs Only materials listed in sect. 3 should be used. Only damage defined in sect. 2 should be repaired. Repair method for fibre reinforced plastics see sect. 2 and 3 5.3.1 Cut out damaged area, roughen the surrounding area for the overlap required see sect.
  • Page 11 Repair manual DG-800S 5.3.4 Repairing the outer skin of a 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.
  • Page 12 Repair manual DG-800S Repairing small dents in a sandwich panel skin (no cracks in the gelcoat) Small dents can usually be removed by heating up to 60° to 70° C (140° - 158°F). Use a hot air blower to heat the area of the dent. The crushed foam will then spring back to its original form, so that the dent will hardly be seen.
  • Page 13: Dimensions

    Repair manual DG-800S Types of materials and overlap dimensions The following overlap dimensions are to be maintained. Use the materials given, see also pages 6 and 7.(Smaller reinforcements on high stressed areas are not given in the table below). Part overlap fabric type, etc.
  • Page 14 Repair manual DG-800S Part overlap fabric type, etc. (cm) (in.) d = + 45° l = + 90° _______________________________________________________________ Rudder outside 1 x 90070 d core H 60 - 3 mm thick Inside 1 x 90070 d _______________________________________________________________ Fuselage boom...