UAV design.

thingiverse

Design an experimental UAV using OpenVSP and OpenSCAD. Import the wings, fuselage, horizontal tail, and vertical tail as separate STL files in OpenVSP. Export these parts as .vsp to .stl and use them in OpenSCAD's parts.scad file for further design modifications. To create a hollow fuselage with significant wall thickness, create a second .vsp file that represents the inside of the fuselage and subtract it from the original using OpenSCAD. This will allow you to add hole for carbon fibre spars in both wings and fuse, as well as structural bracing in wings and separating ailerons, etc. Set the "part number" parameter in parts.scad file to a number between 1 and 30 to render just a single part that can be exported as a .stl file. To make the parts 3D printer-friendly, import all STL files into Netfabb Basic and rotate them to a reprap printable orientation. Export these files as 1r.stl to 32r.stl and use them in Slic3r. The main wing parts are designed to be printed hollow with no infill, while fuselage and tail parts are designed for approximately 10% infill. Ailerons and moving tail surfaces require balsa wood as they are not printable. The wings have outer-half tapering and washout with rounded ends, dihedral is set at 4 degrees, and the airfoil profile is NACA4412 for easy lift characteristics. The overall design aims for simplicity to ensure successful 3D printing in sections. Although most of this has been 3D printed, it hasn't yet been flown.