How are nuclear subs powered?
Nuclear submarines and aircraft carriers are powered by onboard nuclear reactors.
Atoms in the nuclear reactor split, which releases energy as heat.
This heat is used to create high-pressured steam.
The steam turns propulsion turbines that provide the power to turn the propeller..
How do diesel subs run underwater?
The sub must surface (or cruise just below the surface using a snorkel) to run the diesel engines. Once the batteries are fully charged, the sub can head underwater. The batteries power electric motors that drive the propellers. Battery operation is the only way a diesel sub can actually submerge.
What kind of engine does a submarine have?
diesel engineMost submarines except nuclear ones have diesel-electric engines. The diesel engine operates normally when the sub is near the surface but it doesn’t drive the sub’s propellers directly. Instead, it powers an electricity generator that charges up huge batteries.
Why are nuclear submarines better than diesel?
The nuclear reactor on board a submarine allows it to operate at high speed for long periods of time with unlimited range. … Nuclear power provides attack submarines with a sustained submerged speed of more than 30 knots, considerably greater than any contemporary diesel submarine.