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Onager with a bowl bucket Sketch of an onager with a sling, a later improvement that increased the length of the throwing arm, from Antique technology by Diels.. The onager (UK: / ˈ ɒ n ə dʒ ə /, / ˈ ɒ n ə ɡ ə /; US: / ˈ ɑː n ə dʒ ə r /) [1] was a Roman torsion-powered siege engine.
Onager: 353 BC Rome: The Onager was a Roman torsion powered siege engine. It is commonly depicted as a catapult with a bowl, bucket, or sling at the end of its throwing arm. Trebuchet: 4th Century BC China: Similar to the catapult, but uses a swinging arm to launch projectiles. It is usually considered to be stronger than the catapult. [4 ...
The torsion mangonel myth began in the 18th century when Francis Grose claimed that the onager was the dominant medieval artillery until the arrival of gunpowder. In the mid-19th century, Guillaume Henri Dufour adjusted this framework by arguing that onagers went out of use in medieval times, but were directly replaced by the counterweight trebuchet.
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Onager Mangonels are also sometimes referred to as Onagers. Onager catapults initially launched projectiles from a sling, which was later changed to a "bowl-shaped bucket". The word Onager is derived from the Greek word onagros for "wild ass", referring to the "kicking motion and force" [46] that were recreated in the Mangonel's design ...
Mangonel was a general term for medieval stone-throwing artillery and was used more specifically to refer to manually (traction--) powered weapons. It is sometimes wrongly used to refer to the onager. [10] Modern military historians came up with the term "traction trebuchet" to distinguish it from previous torsion machines such as the onager. [11]