A torsion siege engine is a type of siege engine that utilizes torsion to launch projectiles. They were initially developed by the ancient Macedonians...

the projectiles, which had extended to include stones also. Later torsion siege engines appeared, based on sinew springs. The onager was the main Roman...

The torsion mangonel myth, or simply the myth of the mangonel, is the belief that mangonels were torsion siege engines such as the ballista or onager which...

The scorpio or scorpion was a type of Roman torsion siege engine and field artillery piece. It was described in detail by the early-imperial Roman architect...

onager (UK: /ˈɒnədʒə/, /ˈɒnəɡə/; US: /ˈɑːnədʒər/) was a Roman torsion powered siege engine. It is commonly depicted as a catapult with a bowl, bucket, or...

trebuchet. A common misconception about the mangonel is that it was a torsion siege engine. The word mangonel was first attested in English in the 13th century...

This is a list of siege engines invented through history. A siege engine is a weapon used to destroy fortifications such as defensive walls, castles, bunkers...

rigidity Torque tester Torsion siege engine Torsion spring or -bar Torsional vibration Seaburg, Paul; Carter, Charles (1997). Torsional Analysis of Structural...

of these names derived from the word ballista, an ancient Greek torsion siege engine similar in appearance but different in design principle. In modern...

Roman siege engines were, for the most part, adapted from Hellenistic siege technology. Relatively small efforts were made to develop the technology;...

Catapult Design, Construction and Competition with the Projectile Throwing Engines of the Ancients. This type of catapult uses a swinging arm to hurl a projectile...

provide a name for weapons. In the Roman army, the scorpio was a torsion siege engine used to shoot a projectile. The British Army's FV101 Scorpion was...

now be called a thesaurus. Torsion siege engine: Preceding the development of torsion siege engines were tension siege engines that had existed since at...

Roman name arcuballista (from arcus 'bow' + ballista 'missile-throwing engine'), which was then used for crossbows, although originally used for types...

medieval siege engines. A catapult uses the sudden release of stored potential energy to propel its payload. Most convert tension or torsion energy that...

following: bronze casting techniques, water organ (hydraulis), and torsion siege engine. Many of these inventions occurred late in the Hellenistic period...

tripod. It had a lower rate of fire and was used as a siege engine. With the invention of the torsion spring bundle, the first ballistae could now be built...

where it replaced torsion powered siege engines such as the ballista and onager. The rapid displacement of torsion siege engines was probably due to...

describes the impression new weapons made during the siege of Motya by Dionysius. Torsion siege engine pieces were probably invented in Macedonia, shortly...

Italy's Abarth racing cars. In the Roman army, the scorpio was a torsion siege engine used to shoot a projectile. The British Army's FV101 Scorpion was...

flex and potential breakage at high engine speeds. Any torsional flex in the crankshaft is compounded by the torsional flex of the camshafts for the rear...

typically coupled with attempts to reduce the fortifications by means of siege engines, artillery bombardment, mining (also known as sapping), or the use of...

warfare. Typically this referred to engines that propel a stone along a flat track with two rigid bow arms powered by torsion (twisted cord), in particular...

finance the development and proliferation of ever more powerful torsion siege engines, naval ships, and standardized designs for arms and armor. Under...

examples or illustrations, but the Oyumi is thought to have been a type of siege crossbow. According to Japanese records, the Oyumi was different from the...

by "raising" the continuous track units' roadwheels by rotating their torsion-bar-sprung suspension arms to drop the chassis close to the ground to distribute...

12th century CE, many torsion powered catapults became largely obsolete and cannons became commonplace medieval siege engines by the 15th century. While...

chassis (which featured stronger torsion bar) using the more powerful Renault-Mack E9 diesel engine. As this new engine was taller, a new 12 cm turret ring...

text should date to 156–55. Biton describes the construction of four non-torsion catapults. The two built by Charon of Magnesia and by Isidoros of Abydos...

the siege. Explosive shells had been in use in China for centuries but what was new was the counterweight type of trebuchet as opposed to the torsion type...