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An electromagnetic catapult, also called EMALS ("electromagnetic aircraft launch system") after the specific US system, is a type of aircraft launching system. Currently, only the United States and China have successfully developed it, and it is installed on the Gerald R. Ford-class aircraft carriers and the Chinese aircraft carrier Fujian.
The EMALS uses a linear induction motor (LIM), which uses alternating current (AC) to generate magnetic fields that propel a carriage along a track to launch the aircraft. [5] [6] The EMALS consists of four main elements: [7] The linear induction motor consists of a row of stator coils with the same function as the circular stator coils in a conventional induction motor.
Basic diagram of an onager, a type of catapult. A catapult is a ballistic device used to launch a projectile a great distance without the aid of gunpowder or other propellants – particularly various types of ancient and medieval siege engines. [1]
A catapulta was a Roman machine for throwing arrows and javelins, [1] [2] 12 feet (3.7 m) or 15 feet (4.6 m) long, at the enemy. The name comes from the Greek katapeltes (καταπέλτης), because it could pierce or 'go through' (kata) shields (peltas).
The fresnel lens optical landing system of Charles de Gaulle. An optical landing system (OLS) (nicknamed "meatball" or simply "ball") is used to give glidepath information to pilots in the terminal phase of landing on an aircraft carrier.
The Dassault Rafale (French pronunciation:, literally meaning "gust of wind", [3] or "burst of fire" in a more military sense) [4] is a French twin-engine, canard delta wing, multirole fighter aircraft designed and built by Dassault Aviation.
Advanced Arresting Gear for US Navy Gerald R. Ford-class aircraft carriers. The Advanced Arresting Gear (AAG) is a type of arresting gear developed by General Atomics for the U.S. Navy's newest Gerald R. Ford-class aircraft carriers.
Crossbows and Catapults, also known as Battlegrounds, is a game of physical skill first released in 1983.It has since been published by several different game publishers including Lakeside, Alga (), Base Toys, Tomy and currently Moose Toys (under the name Battlegrounds Crossbows and Catapults).