The Electromagnetic Aircraft Launch System (EMALS) is a slingshot on steroids.
Compared to steam catapults, the new launch system is lighter, smaller and requires less maintenance while increasing controllability, reliability, and efficiency, according to the Naval Air Warfare Center. The system is designed to launch up to 25 percent more aircraft – manned or unmanned – with greater precision.
By eliminating the use of steam, the EMALS system may contribute to the quality of life for sailors sleeping below decks. "The water brake has been removed, so from that perspective, the [catapult] will get quieter," said Donnelly in an interview with Defense Media Network. "You'll continue to hear the shuttle noise, jet blast deflectors and hooks hitting the flight deck in the arresting gear area."
The EMALS system is over 15 years in the making. The system was tested from land-based sites, but this video shows the system being tested from the pre-commissioned USS Gerald R. Ford (CVN 78).
Watch how it accelerates from 0-160 in 2 seconds: