Military of China, force comment.
Military of China, force comment.

submarines cruising in the ocean

Feng Xiong special correspondent Liu Yingjun

blue waters, the submarine as whales, as in underwater cruising in deterred. What spells they cast can be elusive, quietly, sneak it? Originally, these “underwater ghost” without exception, clever use of high-tech stealth technique. Recently, this reporter made a special trip to visit the Institute of Naval Engineering University, an expert.

make submarines quieter acoustic stealth

“so-called ‘stealth’ is not invisible, but to modern devices can not or difficult to detect.” Research director Professor He Lin said: “The water environment is wonderful, with minimal energy can have a greater voice because of sound waves in the ocean is the only way to find long-distance transmission of energy in the form in today’s three-dimensional naval warfare, submarine operations once the sound, is equivalent to a declaration of his arrival the enemy, so the ‘sound of stealth’ submarine is critical. “

According to reports, the present United States, Russia and other countries after nearly 50 years of sustained development, the submarine’s acoustic stealth performance has reached a high standard. U.S. Navy from the “Nautilus” nuclear submarine development to “Sea Wolf” and “Virginia” class nuclear submarine, the noise level has reached the level of super-quiet type. According to foreign reports, February 2009, a British nuclear submarine and a French nuclear submarines collided in the Atlantic, a good illustration of the hidden performance of modern nuclear submarine has reached what extent.

smart vibration breakthrough “insulation limit”

“hidden submarine voyage, the noise generated by machinery and equipment is the main source of noise,” Zhao Ying-long research associate, said. Reduce the mechanical noise of the submarine, there are two general ways, one is a low-noise machinery and equipment; another is to make the machinery and hull vibration “insulation.” Mechanical vibration isolation device and the hull is to “insulated” the most effective and most widely used technical means. In recent years, the international “smart vibration isolation technology” was a great development, will enable hundreds of tons of floating power to play the role of mechanical stability, ability to close the isolation limits, effectively solve the submarine propulsion plant efficient vibration isolation technical problems.

dynamic life cycle of submarine stealth exist

“not only the mechanical device installed on board will be the most quiet,” which is vibration and noise reduction research in the field of proverb. Mounted on the submarine because of any mechanical device will essentially be a potential source of harmful noise, so are likely to bring the submarine stealth and deadly hazards. Therefore, regardless of how a submarine service when the quiet, the components of the damage, wear, loose or worn so may produce unexpected noise. Professor He Lin with the “dynamic sound stealth” theory tells us that “submarine stealth technology research from the design, construction area extends to the use and maintenance of the dynamic life cycle, require strict conformity with the actual needs of submarine warfare.” From The key dynamic sound States stealth technology perspective, to build a high level of “submarine noise monitoring system” is extremely important. The system can capture real-time monitoring of submarine noise, stealth dynamic situation assessment, fault identification acoustic positioning and management of complex systems and a series of comprehensive integration problems, and thus known as the “never tired of stealth Sentinel.”

wartime protection innovative solution development challenges

today’s world, the level of military power submarine stealth technology than ever before. That, however, stealth submarine noise reduction equipment maintenance and support a new challenge. He Lin said, stealth submarine noise reduction equipment, maintenance and support work is very complicated, in terms of countries there is a common problem that is usually better to cope with, but once the war, the maintenance and support will be caught in a passive position can not keep up . Therefore, all military power in wartime can complete stealth submarine noise reduction equipment for emergency maintenance and support tasks are highly valued. At present, the positive development of versatility, few model specifications, build high-performance long-life maintenance and support emergency response system for national attention.