Kantapultti

Kantapultti is the Finnish term for a category of siege engines designed to launch projectiles by storing energy in twisted cords, stretched fibers, or counterweights. The devices were used in various ancient and medieval warfare to assault fortifications and disrupt enemy formations.

Two main families existed: torsion-powered catapults, such as mangonels and onagers, which store energy in twisted sinews or fibers; and counterweight devices, commonly called trebuchets, which rely on a heavy weight to fling projectiles. The distinction reflects different mechanisms for storing energy and delivering power to the throwing arm.

Construction typically includes a rigid frame, a throwing arm mounted on a pivot, a sling or cup to hold the projectile, and the energy storage and release mechanism. Operational use required a crew to cock the device, load the projectile, and release the arm to launch.

Catapults were valued for their potential range and the ability to breach or soften fortifications, but accuracy was variable and performance depended on design, materials, and maintenance. With the advent of gunpowder artillery, catapults largely disappeared from frontline warfare, though smaller models remain in demonstrations, museums, and educational settings.

See also: Catapult, Mangonel, Onager, Trebuchet, Siege engine.