CHINA STARTED TO DEVELOP A SUPERSONIC SUBMARINE

Scientists from the Harbin Institute of Technology have created a technology that will help China develop submarines and torpedoes, capable of traveling under water with or even near-supersonic speed. According to The South China Morning Post, it comes to technology sverhkavitatsii creating around the moving underwater object cavitation bubble. Equipped with this technology will be able to get the submarine from Shanghai to San Francisco in about one minute.

 

• Chinese scientists proposed technology is a multi-component. In the first stage of acceleration of the underwater ship its surface will envelop a special liquid that reduces friction of water against the hull. After reaching a speed of 75 kilometers per hour or more will be used sverhkavitatsii technology. Technical details about the implementation of this technology, the Chinese are not specified, but we know that when it is used the ship will be able to keep control.
  
  
  
• In general, Chinese technology sverhkavitatsii represents cavitator (special device located in the bow of the underwater object) and a set of nozzles therein, which gas is supplied into the cavitation bubble. The very same submarine supposedly can get the rocket engines, enabling the movement of a high speed under water.Theoretically, sverhkavitiruyuschaya submarine will be able to develop underwater speeds of up to 5,8 thousand kilometers per hour.
  
  The speed of sound in water is about 1.5 thousand meters per second, 5.5 thousand kilometers per hour, at a temperature of 24 ° C and salinity of 35 ppt. According to Professor Li Fengcheng, before the technology supercavitation will actually be implemented, scientists have to solve several difficulties. One of them is the instability of the cavitation bubble, inside of which is to "fly" the submarine.
  
  
  
• Cavitator torpedoes "Squall"
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  Cavitation technology was first used in the USSR in the first half of the 1970s, when it was designed speed underwater missile-torpedo "Squall". This ammunition equipped with underwater gidroreagiruyuschim jet fuel capable of moving under the water in the cavitation chamber with a speed from 370 to 500 kilometers per hour. The change in the trajectory of motion torpedo possible within narrow limits, and its range is only 13 miles away.
  
  
  

   
• Cavitation - a natural phenomenon in which water behind a fast moving object formed tiny bubbles filled with vapor. This is due to the sharp decrease in the fluid pressure behind the propeller blades. Soon after the formation of bubbles collapse and a shock wave. Sailors face cavitation very often. In particular, because this phenomenon is the destruction of the blades of the propeller.