In July 31st, the famous American think tank "national interest" magazine published an article saying that there was a message that the Chinese Navy had successfully developed a marine propulsion pump propeller, which, in theory, was quieter than the submarine propulsion technology in any western country. If China's pump propeller can be put into practical application, it will be a major advance in Chinese naval equipment. It also means that the Chinese navy has made real progress in the research and development of new submarine technology, and has finally begun to catch up with western countries. However, the article also mentioned that submarines' mute technology is not only dependent on the development of propulsion technology, but also requires a lot of trial and error to eventually let the Chinese submarine technology catch up with the United States.
The article claims that the traditional submarine propeller is driven by a mechanical shaft, while a different design is used in China's pump propeller. The design consists of a protective cover wrapped in an embedded thruster similar to a hub, driving a ring motor in a protective cover by electric energy and pushing the pump blade cavity in the center of a ring engine. The inner blade rotor rotates and produces thrust. Because there is no drive shaft but a ring propeller, the submarine will have a little lift at the quiet level, so it is more difficult to detect it. In addition, the new propeller can also reduce cavitation and further improve the mute performance.
The Chinese Navy's next - generation 095 - nuclear and 096 - nuclear submarines are likely to install the new propulsion system, but it is still unknown which nuclear submarines will take the lead in the system. Some U.S. Navy experts say that if the technology does exist, the U.S. Navy's submarine forces will be under increasing pressure from the Chinese navy.
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