00:00Imagine standing on a floating city of steel, watching a 30-ton fighter jet accelerate from absolute zero to 160
00:09miles per hour in just two seconds.
00:11That is faster than most sports cars, but it is happening to a massive warplane.
00:17For decades, the United States Navy launched these heavy jets using high-pressure steam.
00:23But steam has a massive hidden flaw.
00:26It loses pressure constantly, and tuning it for different jet weights is an engineering nightmare.
00:32Enter the game-changer, EMALS, which stands for the Electromagnetic Aircraft Launch System.
00:39Instead of pushing planes with hot steam, it grabs them with invisible magnetic fields and hurls them down the deck.
00:46Here is the mind-blowing unknown fact that most people do not realize.
00:51To power this launch, the ship cannot just plug into a standard wall outlet.
00:56The electrical surge required is so massive, it would instantly melt every city power grid in the surrounding area.
01:03Instead, the carrier uses giant spinning metal cylinders called rotor disks tucked deep inside the hull.
01:11These heavy rotors spin at blinding speeds, slowly collecting and storing energy from the ship's nuclear reactors over several minutes.
01:19Magnetic waves propel the heavy aircraft forward at extreme velocity.
01:25That massive pulse of electricity races up through heavy copper cables directly into the flight deck track.
01:32This track is actually a giant linear synchronous motor stretched out flat underneath the jet.
01:37Think of a normal electric motor as a donut shape where magnets spin around in a circle.
01:43Now picture cutting that donut open, flattening it out like a long rug, and laying it down the length of
01:50a football field.
01:51That is a linear motor.
01:53Magnets in the flat track interact with magnets on the launch shuttle holding the plane.
01:58By rapidly switching the electrical currents on and off, the track creates a moving magnetic wave that chases the jet
02:05forward.
02:06The jet is literally surfing on an invisible wave of magnetic force.
02:11There is no physical pushing arm grinding against gears.
02:14It is pure invisible magnetism pulling the aircraft down the runway.
02:18Because computers control the electricity flowing into the track, operators can fine-tune the push with incredible precision.
02:27A lightweight drone gets a gentle ride, while a heavy bomber gets maximum power.
02:32Steam systems could never achieve this smooth control.
02:36They often shook the aircraft frame so violently that structural parts cracked over time.
02:41EMALS treats the airframe like a feather, reducing wear and tear significantly.
02:46This smooth acceleration also means the nose gear of the jet experiences far less stress during launch.
02:53Pilots report that the ride feels much cleaner and far more predictable compared to older steam catapults.
03:00Here is another surprising twist.
03:03When the jet clears the end of the deck, the magnetic track does not just shut off abruptly.
03:08It instantly reverses its magnetic field to break the launch shuttle safely in a fraction of a second.
03:14That sudden stop generates electrical power back into the system through regenerative braking.
03:19The ship actually captures a portion of the energy used during the launch and sends it right back into the
03:24storage rotors.
03:26It is an engineering marvel that turns raw nuclear power into controlled, invisible lightning.
03:32By trading steam pipes for magnetic fields, modern carriers can launch more planes faster and with far less maintenance.
03:39If you love uncovering the hidden physics behind massive modern engineering feats, hit that.
03:46Check out our next video on screen right now to explore how futuristic railguns use these exact same principles to
03:53fire projectiles at hypervelocity speeds.
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