Lukisegler 3.0 (electrical RC glider)

The Lukisegler 3.0 – Improved Fuselage Concept

The Lukisegler version 3.0 is based on an improved fuselage construction concept.
The 3D-printed parts are made from LW-PLA and printed with infill for a lightweight yet durable structure. It is now much more robust and impact-resistant, even if your landing is a bit on the rough side.

Two fuselage halves are assembled first. These are reinforced with fiberglass or carbon fiber rovings, then glued together to form the basic fuselage shell.

The raw fuselage is then filled with lightweight filler and covered with tissue paper.
This results in a smooth surface and a silky finish - once it's painted, you'd never guess it came out of a 3D printer.

Advantages and Improvements:

• white glue (wood glue) is used for most bonding surfaces
• Increased strength and rigidity of the fuselage
• All-moving elevator placed in a elevated position in the frame (less likely to snag in tall grass)
• Spacious fuselage for easy component placement
• Easy servo installation thanks to a removable servo tray
• Motor mount is easily adaptable to different motor sizes and setups

However, the new fuselage is still compatible with the old wing (https://www.printables.com/de/model/76098-lukisegler-electric-rc-glider) and also with the 2.6 m thermal wing (https://www.printables.com/de/model/260412-lukisegler-swappable-thermal-wing-2650mm-wingspan), as these have proven to be quite robust (at least for me).

The CArts Lukisegler 3.0 is an electrically powered glider that comes entirely from the 3D printer.

The design is most closely based on a hotliner. 

The building-instructions are added as a pdf.
I also made some instruction videos for the assembly of the fuselage:

The building-instructions for the wings can be downloaded from my website: 
https://c-arts-modelle.de/carts_modelle_web/fluggeraete/carts_lukisegler/carts_lukisegler.html
(It is a german website, but the translator in Chrome or Chromium will do quite a good job!)

I placed more than one part on the printplate but they are printed sequetially one by one. This saves a lot of time and reduces stringing when printing in LW-PLA or TPU!

When designing and printing the parts for my RC flight models, I use PrusaSlicer, which can be downloaded from https://www.prusa3d.de/prusaslicer/, to realize special desired properties for 3D printed parts. These properties (e.g. adhesive surfaces or internal support structures) cannot be achieved at all or only with great difficulty using a CAD program alone. 

Modifiers are used in the print files . These are essential for the stability and for the structure of the individual parts! The surfaces for connecting the individual parts are made by using modifiers .

I do not provide stl-files, but 3mf-files for download. If you still need stl files, I made a short vido on YouTube how stl files can be exported in PrusaSlicer.

The overall printing time of the whole model (fusalage and wings) is about 100 hours.

• Span: approx. 1700 mm
• Body length: approx. 1000 mm
• Take-off weight: approx. 1000-1400 g
• Drive: brushless motor
• Propeller : folding propeller
• Battery: 3S-4S Lipo 1000-2200 mAh
• Controls: elevator / rudder / aileron / motor
• Center of gravity: 70-75 mm behind the profile nose
• Rudder deflections: 15-20 °

Parts for the construction

Carbon rods or fiberglass rods as well as various adhesives are required for the construction.

The 3d-printed parts are printed in PETG or LW-PLA.

Carbon rods

• Carbon rod 1 mm: 2 pieces (1000 mm length)
• Carbon rod 1.5 mm: 5 pieces (1000 mm length)
• Carbon rod 2 mm: 6 pieces (1000 mm length)

Steel wire

• Steel wire 0,8 mm: 2 pieces (1000 mm length)

Screws

• Wood screws 2x10 mm (d x h): 26 pieces
• Wood screws 2x12 mm (d x h): 4 pieces
• Screw M3x20 mm: 1 piece
• Screw M3x30 mm: 1 piece
• Nuts M3: 2 pieces

Electronics

Servos

• Micro servos: 2 pieces (maximum dimensions (L x W x H) 23.5 x 10 x 24 mm)
• 9g Mini-Servos 2 pieces

I use high quality servos with metal gears. These can cope with even greater loads (e.g. in the event of undesired contact with the ground) without damage. The additional costs for this are worthwhile.

Receiver

• Minimum: 5 channels

Engine

• Brushless motor (maximum dimensions (d x H) 28 x 50 mm)

ESC (controller)

• Minimum: 20A (3-4S)
• BEC minimum: 2A