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☆ Chinese scientists want to use lasers to power ultrafast, stealthy submarines. A laser expert says there's a major flaw in their plan.
  + stars: | 2024-04-28 | by ( Polly Thompson | ) www.businessinsider.com   time to read: +6 min
Chinese researchers say they have made a breakthrough in laser propulsion technology that could one day be used on submarines and missiles. A laser propulsion expert at McGill University told Business Insider they see flaws in the claims. Rather than relying on nuclear or battery power, the scientists say they have found a way to use lasers to propel submarines — known as underwater laser propulsion. This technology has already been used in Russian Shkval torpedoes since the 1970s, using rocket exhaust rather than laser power. "The average overall thrust is low and the jet power cannot exceed the power supply of the laser."
Persons: —, Yang Ge, Xulong Yang, Ge Yang, Andrew Higgins, Higgins Organizations: McGill University, Business, Service, Submarines, China's Harbin University, China Morning Post, NASA, Harbin University, China Defense Locations: China, Sinica, torpedos
☆ China's military claims to have found a way to build a laser weapon that can fire indefinitely
  + stars: | 2023-08-14 | by ( Marianne Guenot | ) www.businessinsider.com   time to read: +5 min
Armies around the world are testing high-energy laser weapons to intercept targets. If their claims are true, it would mean that China has leapfrogged ahead of the US in developing high-energy laser weapons that could be used on the battlefield. The capability China's military scientists claim to have developed, however, has not yet been seen in action. Laser beams can heat up gas in the air, which can reduce the quality of the beam and cause damage inside the laser chamber, according to the report. The Marines have tested a Compact Laser Weapons System in the range of 2 to 10 kilowatts, and the Air Force has received high-energy laser pods for its fighter jets.
Persons: Steve Weaver, Lockheed Martin Organizations: Service, China Morning, National University of Defence Technology, Optica Sinica, British, Energy, Lockheed, US Department of Defense's, US Army, Marines, Air Force, Defense Department, Office Locations: China, Wall, Silicon, Hunan, Optica, United States, Portland
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