A steam cannon is a cannon that launches a projectile using only heat and water. The first steam cannon was designed by Archimedes during the Siege of Syracuse. Leonardo da Vinci was also known to have designed one (the Architonnerre).
The device would consist of a large metal tube, preferably copper due to its high thermal conductivity, which would be placed in a furnace. One end of the tube would be capped and the other loaded with a projectile. Once the tube reached a high enough temperature, a small amount of water would be injected in behind the projectile. In theory, Leonardo da Vinci believed, the water would rapidly expand into vapour, blasting the projectile out the front of the barrel.
Age of Steam
Various unsuccessful efforts were made during the age of steam to create working steam machine guns and cannons during the 19th century using methods and technology derived from steam locomotives. A World War II steam cannon was the Holman Projector.
- William Murdoch – invented a steam cannon
- Hilton Head Island, South Carolina – site of experimental steam cannon
- Winans Steam Gun
- MythBusters - MythBusters Steam Cannon episode
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- Mr Perkins extraordinary steam gun of 1824 article about an attempt by steam pioneer Jacob Perkins to produce a working steam weapon
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