A breakthrough in laser propeller efficiency by Chinese scientists could transform underwater watercraft propulsion.
SCMP reported that the experts have improved laser propeller efficiency, which might drive underwater vehicles at unprecedented speeds. In "underwater fiber laser-induced plasma detonation wave propulsion," laser pulses emitted via the submarine's optical fibers, thinner than a human hair, generate roughly 70,000 newtons of thrust, similar to a commercial jet engine.
Laser pulses provide propulsion and cause "supercavitation," which vaporizes saltwater and creates undersea bubbles. This method greatly decreases water resistance and might allow submarines to travel faster than sound without creating mechanical noise vibrations that indicate their position.
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