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Wikipedia

A catapult is any one of a number of non-handheld mechanical devices used to throw a projectile a great distance without the aid of an explosive substance—particularly various types of ancient and medieval siege engines.

The name is the Latinized form of the Ancient Greek καταπέλτης - katapeltes, from κατά - kata (downwards, into, against) and πάλλω - pallo (to poise or sway a missile before it is thrown).

The catapult appears to have been invented in 399 BC in the city of Syracuse during the reign of the tyrant Dionysius I. Originally, "catapult" referred to a dart-thrower, while "ballista" referred to a stone-thrower, but the two terms swapped meaning sometime in the fourth century AD.

History

Greek and Roman catapults

In Europe, the first catapults appeared into Greek times around 400 BCE–300 BCE. According to Greek inventor Archimedes the first types derived from by the earlier gastraphetes ("Belly-bow"), consisting in composite bow mounted transversely on a stock, much like the crossbow. A larger version of this was called an oxybeles and is the precursor to the ballista. Biton attributes creation of this catapult to one Zopyrus from Taranto, in southern Italy.

Early adopters of the catapult design were Dionysius of Syracuse (who called it katapeltikon) and Onomarchus of Phocis. Katapaltai are mentioned in the Siegecraft (Poliorkētika) treatise of Aeneas Tacticus, from around 350 BC. It is probable that standard torsion-powered catapults entered in common use in Greek world and Macedon only around 330 BC. Alexander the Great introduced the idea of using them to provide cover on the battlefield in addition to using them during sieges. Projectiles included both arrows and (later) stones. They began launching iron balls in the 5th century AD.

The Romans started to use catapults probably as arms for their wars against Syracuse, Macedon, Sparta and Aetolia (3rd–2nd century BC).

Medieval Catapults

Castles and fortified walled cities were common during this period - and catapults were used as a key siege weapon against them. As well attempting to breach the walls, incendiary missiles could be were thrown inside—or early biological warfare attempted with diseased carcasses catapulted over the walls.

Designs include the torsion-powered mangonel, onager and ballista, and the gravity-powered trebuchet.

Catapults were gradually replaced by cannon in the 14th century.

Later Use

The last large-scale military use of catapults was during the trench warfare of World War I. During the early stages of the war, catapults were used to throw hand grenades across no man's land into enemy trenches. These were eventually replaced by small mortars.

Small catapults, referred to as traps are still widely used to launch Clay targets into the air in the sport of Clay pigeon shooting.

Until recently, in England, catapults were used by thrill-seekers to experience being catapulted through the air. The practice has been discontinued due to fatalities, when the participants failed to land onto the safety net.

Models

Catapults of all types and sizes are being built for school science and history fairs, competitions or as a hobby. Catapult projects can inspire kids to study physics, engineering, math and history. These kits can be purchased from Renaissance Fairs, or from several online stores.