[[searchwing-fiber]]

After still having major problems with waterproof design, the idea is to start a new fuselage design from scratch in fiber composite technology. This promises the following advantages

  • Waterproof material - foam is not water resistant
  • Possibility to adapt the geometry to our requirements, e.g. camera connection
  • Thin material requires only small holes for camera without obstruction view
  • Fiberwings will pave the way to possible solar cell support for extending range

The big drawback is missing experience with aircraft design and fiber technology.

  • Design a negative lamination mould from Rampf MB-0600 Polyurethan material by milling
  • Mill: Step-Four Xpert 1000 S in the Holzwerkstatt Modellbau
  • CAD: Onshape, CAM: Deskproto, NC: XpertMill (Holzwerkstatt)
  • Glueing of the Rampf MB-0600 for L shape: Rampf EP2306 resin + EH-2904-1 hardener
  • Surface Sealing of the MB-0600 material with Münch Mikon 399 MC sealer
  • Release Agent (Trennmittel): Münch Mikon® Mirror Wax liquid W-99+
  • Alternative Release Agent: RAKU® TOOL AC-9103
  • Laminate 2 layers 160g/m2 GFK (R&G)
  • Epoxyresin from R&G

The Deskproto CAM software needs some RAM depending on the detail level. The Deskproto Software is installed on the breakout.

On 15./19./20.12.2020 we did a first milling test with a small MB-0600 test block

The milling was done aiming at best milling results. So the distance between milling paths and z distance was set to 0.06mm. Schlichten took 2h 50min for the “Z Konstant” strategy and 7h for the “Überkreuz” strategy.

(Friedrich Beckmann, 23.12.2020)

  • searchwing-fiber.txt
  • Last modified: 2020/12/23 13:05
  • by beckmanf