Researchers at Shanghai Jiao Tong University in China have developed a new vibration isolation technology that could significantly enhance submarine stealth.
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The system combines passive and active components, including a steel and rubber ring and 12 piezoelectric actuators that precisely counteract engine micromovements. According to tests, the innovation can reduce noise transmitted through the submarine’s structure by up to 26 decibels, potentially halving the detection range of enemy sonars.
Laboratory tests on a scaled-down prototype showed promising results, with significant noise reduction in frequencies between 10 and 500 Hz — the most common range of engine vibrations. The system is controlled by an intelligent algorithm that coordinates the actuators to prevent common instabilities found in active noise control systems, allowing real-time noise cancellation.
Despite the advancements, researchers acknowledge challenges for practical application, such as rubber stiffness variation under different environmental conditions and the long-term durability of piezoelectric materials.
It is not yet known whether this technology is already being used in Chinese submarines, but the study was supported by the China State Shipbuilding Corporation, one of the country’s leading submarine manufacturers.
Source: South China Morning Post | This content was created with the help of AI and reviewed by the editorial team
