Gliderwings/plane

thingiverse

Work in Progress: What's Left. 1.) Printing to Check If Jointing Parts Fit or Need More Improvements. The main concern is the joint between Tailrudder and tailbody. 2.) Simulated Dragforce to Approximate Theoretical Speed for Different Power Trains. NoseV2 has the propmount raised. Adding some landing gear will provide more space between the ground and the prop. Drag of the wing simulated with Autodesk Flow Design: 0deg angle of attack Wind Speed Drag Force Wind Speed Drag Force 10m/s 0.665N 30m/s 5.733N 20m/s 2.604N 40m/s 10.007 Drag Coefficient: 0.39 Other Materials: Carbon Fiber Tubes: 7x920mm 7x1180mm 2x240mm (x2) 3.5x155mm(x2) 6x110mm Normal Wood (square) 5x5x180mm(2x) Little Background Story: After buying my first Balsa Airplane kit and crashing it after 8 seconds, I wanted to repair it and make some improvements in the structure due to my inexperience with balsa wood. Unfortunately, the balsa wing was lost, and I came up with the idea to make the wing using my 3D printer. The first problem I encountered was that it would be a heavy wing, especially if you go over a wingspan of 1500mm. After recreating the wing in CAD, the first design was bad and heavy. It was just a shell with support structures inside. The weight was about 850g, and the wingspan was 1900mm. My task was clear: make it lighter. I thought of building the airplane wing using the same techniques used to build it in balsa - leading edges, ribs, and a shrink film for cover. Problem with PLA plastic is that the heat needed for the shrink film to shrink is close to the same temperature as the plastic's modeling point (it's not melting but can be deformed easily). To solve this problem, I used normal packaging tape with a 50mm width. It makes a smooth skin and doesn't need heat to stick, and it's cheaper. During the design process, I even made some special mounts for the servos (Micro Servo 9G SG90) and added space for 2 fiberglass tubes (7mm diameter). The approximate weight of the wing structure is now 450g. To get the right sides of the wing, just use the mirror function in the G-code generator.