Trebuchet

pinshape

This project involves designing a Small trebuchet with an adjustable shooting angle. The structure is built around trusses to increase its resistance while using minimal filament. Print Settings Printer Brand: RepRap Printer: Marlin Rafts: No Supports: No Resolution: 0.2 Infill: It depends on the part, but for the counterweight, use a higher infill and for haste use lower infill so it works as expected. How I Designed This I used Blender to model this project. PROJECT: Trebuchet Objectives Through this project, students will learn about energy conservation, tangent angles, angular momentum, ballistics, and Newton's laws of motion in action. Audiences Anyone studying basic physics can participate in this project. Steps Put the base at the bottom and print two trusses from the file "trelica." They should fit perfectly without needing to screw them into the base. Next, print two counterweights, two haste parts, one projectile, two internal locks, two external locks, two side locks, and one support. Screw the support to the base, then put each stem in a counterweight with the hole facing outwards. Before assembling both parts, place something (any object that fits and has reasonable weight) inside them. Then, put the projectile on top of this structure, ensuring it stays in position. Take a metal stick and insert it through the truss hole, positioning the recently assembled structure in the middle with internal locks on each side. Super Glue both side locks outside the trusses and screw external locks onto the internal locks, with one screw passing through a lock on each side. Between the locks, place another metal stick to control the shooting angle of the trebuchet. Make sure the screws are tight enough so that it doesn't move unless you loosen them slightly, allowing for great control over the shot. Results By now, you should have a working trebuchet. I recommend trying out different shooting angles and counterweights to see how they affect the performance. Changing the weight-counterweight ratio alters the momentum, resulting in variations of force magnitude, which can be controlled by adjusting the speed of the stem, producing stronger or weaker shots.