外文标题：China moves closer to developing supersonic submarine: Report
BEIJING: China has moved a step closer to creating a supersonic submarine that could travel from Shanghai to San Francisco covering nearly 9,900km in less than two hours, a Chinese scientist has said.
New technology being developed by a team of scientists at Harbin Institute of Technology's Complex Flow and Heat Transfer Lab could make it easier for a submarine or torpedo, to travel at extremely high speeds underwater, the Hong Kong based South China Morning Post reported on Sunday.
The distance from Shanghai in eastern China to San Francisco in western US is about 9,873km. Li Fengchen, professor of fluid machinery and engineering, said the team's innovative approach meant they could now create the complicated air "bubble" required for rapid underwater travel.
"We are very excited by its potential," he said. During the Cold War, the Soviet military developed a technology called supercavitation, which involves enveloping a submerged vessel inside an air bubble to avoid problems caused by water drag. The supercavitation, torpedo called Shakval was able to reach a speed of 370km or more — much faster than any other conventional torpedoes. Li said the team of Chinese scientists had found an innovative means to address problems like designing a submerged vessel to travel at high speeds to generate and maintain the air bubble with a rudder placed within it to avoid direct contact with water.
Its application so far limited to unmanned vessels, such as torpedoes, but nearly all of these torpedoes were fired in a straight line because they had limited ability to turn. Once in the water, the team's supercavitation vessel would constantly "shower" a special liquid membrane on its own surface.
Although this membrane would be worn off by water, in the meantime it could significantly reduce the water drag on the vessel at low speed, Li said. After its speed had reached 75kmph or more the vessel would enter the supercavitation state. The man-made liquid membrane on the vessel surface could help with steering because, with precise control, different levels of friction could be created. "Our method is different from any other approach, such as vector propulsio," Li said.
"By combining liquid-membrane technology with supercavitation, we can reduce the launch challenges and make cruising control easier," he said. However, Li said many problems still needed to be solved before supersonic submarine travel became feasible.
What is the highest underwater speed of any submarine or torpedo at present? Seem unrealistic currently to make supersonic submarine
Indian IIT and IIM students cannot even build a silencer for the loud autorickshaw noise that the whole country suffers. Thus us the state of indian education... Look at Chinese universities who are developing supersonic submarines and will have a prototype in a year or less... Who cares, indian it guys hknow how to pass Agarwal classes and they think they are theoretical genius. You should see every IIT and IIM guy walk on the street. They think they are some sort of genius.. Frog in well mentality... It's such a shame that these universities are fooling the whole country
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The Common Man (Unknown)
n0t g00d f0r India as well..
Devanatha Jagannathan (Unknown)
Seems to be dream of traveling 9,900km in less than two hours by a sub. Let us wait and watch how they achieve it.
We need not bother , it is USA which has to worry .
Whatever speed they actually attain, I think these submarines will create a huge swathe of destruction in the marine environment as they race around, because of their powerful shock waves. Also, I wonder what chemicals they will be using as their so-called "liquid membrane". No doubt it will be highly toxic to marine life. But what do the Chinese care about environmnent? They are conditioned from birth to respect nothing but money and power at any cost.
Bhoothnath (@ mumbai)
Bull sh*t as usual.
Stop talking about it, this is a new faked up by a Sounth Korean news agency, But this new tech is used in the one of the China newest missile
mcspon07 (Right Here)
If China already had that kind of technology it wouldn't be relying on the rest of the world and its slave labor to make money from selling cheap D1ld0s.
@Daniel that's untrue that we Indians are lagging. .. it's a democracy and things gets delayed.. our gov will do all that is good for the country and man kind unlike china who are of destructive nature. doesn't mean that china has taken over india in all aspects. china growth is not sustainable and gov policies are not people friendly.. though we are developing slower than these chinese basterds but we have solod base.wait and watch.. I am positive.
red hunt (Unknown)
at least they (chinkies) are trying something ..
armando dias (Unknown)
Looks like professor Li is from DRDO..talks nonsense
Very hard to actually implement this. Long and perhaps not feasible to develop such a submarine.
AJIT VADAKAYIL (calicut)
SUBJECT : China moves closer to developing supersonic submarine: Report . ###################################### I CHALLENGE CHINA TO MAKE THIS " SUPER CAVITATING VEHICLE " OF THE SPEED QUOTED UNDERWATER , IN THE NEXT 500 YEARS . capt ajit vadakayil ..
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HINDU WARRIOR (KALYUG) replies to AJIT VADAKAYIL
Y wud china accept ur stupid challange.....,...go b!tch about it in ur dumb blog lol
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Ramesh K (Unknown)
I'm a bit suspicious here whether this can be really achieved or not. Supersonic means more than 12k km per hour. If Chinese scientist can do this then this will be a miraculous invention and will definitely help man kind.
We are fastest earners in the field of corruption and nobody can beat us now or never.
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Now Walmart USA customers will get goods from China faster. What else can China use this technology for?