China is the dream of Supersonic submarine came one step closer. Scientists at the Harbin Institute of Technology's Complex Flow and Heat Transfer Lab have developed a technology with the U-boats and torpedoes under water with extremely high speed could move. A U-boat could be as the distance from Shanghai to San Francisco in less than two hours of travel, reported the South China Morning Post.
The core of the technology is, according to the scientists the possibility of a kind of bubble of air to produce the extreme speeds. Conventional submarines are mainly slowed down, because water is much more friction is created as the air.
The Soviet Union developed the technology in the Cold war
Chinese scientists have for the principle of Superkavitation further developed in the Soviet Union during the Cold war had developed. This is an underwater vehicle of a bubble surrounded, in order to reduce friction. A Torpedo had already at that time speeds of 370 km/h is reached. Theoretically, in this way, even a speed of 5800 km/h are reached, what is the speed of sound under water.
Until now there was, however, the Problem of an underwater vehicle is already at a very high speed needs to start the bubble to create and maintain. Also, it was almost impossible to control the vehicle, because about a rudder no contact with the water could have been. Therefore, the principle in the past exclusively for unmanned vessels such as torpedo applied.
Membrane is to reduce water resistance
The Chinese research team now plans to have found a way to bypass these problems. So you want to move the vehicle as soon as it is in the water is permanent with a special liquid spray and a kind of membrane form. This should Start when the resistance of the water to reduce. As soon as a speed of 75 km/h is reached, would the vehicle is then in the condition of the Superkavitation switch. The protective film should then control will be used, by depending on the needs of certain parts of the surface to be splashed, and so the friction can be influenced.
According to the researchers, however, are more problems to solve, to travel by Supersonic-U-Boot is possible. So, there is as yet no suitable rocket motor, an appropriate distance can be bridged. The Russian Torpedo had a range of 11 to 15 kilometers. Should these obstacles be overcome, is the use of military and civil conceivable, it said. In the future, could also swim suit with the technology.
Glen Johnson
I'm Glen Jonhson. A full time Technology Blogger.
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