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https://github.com/datawookie/trebuchet.jl

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Host: GitHub
URL: https://github.com/datawookie/trebuchet.jl
Owner: datawookie
License: gpl-2.0
Created: 2015-09-18T10:53:16.000Z (about 9 years ago)
Default Branch: master
Last Pushed: 2024-01-19T05:11:00.000Z (10 months ago)
Last Synced: 2024-10-11T18:29:17.511Z (26 days ago)
Language: HTML
Size: 54.7 KB
Stars: 0
Watchers: 2
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: README.md
- License: LICENSE

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README

# Trebuchet

## Background

This project was inspired by a Trebuchet constructed by Ross Kelly. Check out videos of it in action [here](https://www.youtube.com/watch?v=X1QU1nfKZ8E "Launching view.") and [here](https://www.youtube.com/watch?v=xD6mgKXwC2c "Side view."). The design for his Trebuchet is loosely based on the [Pennypult](https://www.kickstarter.com/projects/apptivus/pennypult-ultimate-office-toy-and-model-trebuchet) Kickstarter project.

## Model

![Trebuchet schematic.](https://rawgit.com/DataWookie/Trebuchet/master/trebuchet-schematic.svg "Schematic of the Trebuchet model with definitions of paremeters.")

### Elementary Analysis

An elementary analysis of a projectile with specific speed launched at an angle ψ above the horizontal will achieve a maximum range if ψ is 45°. Although this is a useful starting point when analysing a trebuchet, it is far from realistic. The problem is that the speed of the projectile is changing with time, so that a launch at 45° inclination might occur before the projectile has achieved maximum possible speed.