US Navy testing electromagnetic catapult on aircraft carrier

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in hardware on (#64A2)
story imageFor almost as long as aircraft carriers have existed, they've been equipped with steam-powered catapults to help fighters and bombers get airborne. That's a remarkably old-fashioned technology when you're launching stealth fighters that cost upwards of $20 million each. Aircraft carriers are gigantic, but the runways simply aren't long enough for most planes to generate sufficient lift under their own power.

The US Navy is now testing a replacement system called the Electromagnetic Aircraft Launch System (EMALS) aboard the new USS Gerald R. Ford. It works by using an electric current to generate magnetic fields that propel a carriage down the track built into the runway, launching planes much more smoothly and efficiently than the old steam catapults with improved reliability. A steam catapult takes up a great deal of space and weigh in excess of 1,300 pounds. These systems take a long time to recharge after each launch, and the launch itself is rather abrupt. There's no smooth acceleration with a steam piston, resulting in increase wear on the body of the aircraft. Steam catapults also use more power than the EMALS system.

Re: false dichotomy (Score: 0)

by Anonymous Coward on 2015-04-14 01:29 (#70A0)

What is so "old" than how power is generated?

"Fire" heats water makes stream that turns a turbine to make electric power.

Replace word "fire" with: Coal, Oil, Gas, Nuclear, Solar Furnace, Geo-Thermal, so 19th century!

So superheated stream driving the plunger is less efferent the electric-o-magnetic.

One conversion of energy, vs two? No loss there!
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