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Supersonic Trebuchet (hackaday.com)

650 points by wyrm · 1753 days ago · 236 comments on HN

Article summary

A trebuchet designed by David Eade has achieved supersonic speeds, launching a projectile at over 450 meters per second. The trebuchet uses a combination of wood, rubber, and metal components to achieve this speed. The project was documented in a YouTube video, which explains the engineering that went into the trebuchet's design. The trebuchet's speed is comparable to that of a small rifle.

Main themes

  • Trebuchet design and engineering
  • Supersonic speeds and projectiles
  • Historical siege engines and technology
  • Materials science and alternative mechanisms
  • Scaling and applications of the trebuchet design

What commenters say

  • The use of rubber bands in the trebuchet's design allows for a more compact and efficient mechanism than traditional weight-based designs.
  • Historical trebuchets were limited by their use of weights, which restricted their acceleration and speed.
  • The design of the trebuchet could be scaled up to launch heavier projectiles at supersonic speeds, potentially making it a formidable siege weapon.
  • The trebuchet's design is not suitable for launching heavy boulders or other large projectiles, limiting its usefulness as a siege weapon.
  • Alternative materials and mechanisms, such as springs or torsion siege engines, could be used to achieve similar speeds and efficiencies.
  • The trebuchet's speed and design make it a potentially useful tool for other applications, such as launching objects into space or for scientific research.