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Hanoi Kilo submarines quieter than most modern American

zon95

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The advantage of the scheme Kilo 636 is a very low noise level, making the ship almost become "invisible" before the scout weapons acoustics (sonar) enemy.

New Year 2014, good news came with the Vietnam People's Navy: The Kilo improved scheme named first 636 Hanoi, number HQ-182 was about to Cam Ranh Bay. For the first time, Vietnam Navy have in hand a brigade of the most modern submarines in the world, willing to do the task of protecting the sovereignty of the islands of the country.
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Kilo 's first Vietnam - Korea bearing number 182 .The advantage of the scheme Kilo 636 is a very low noise level , making the ship almost become " invisible " before the scout weapons acoustics ( sonar ) enemy . Therefore, the Kilo is the Western military expert nicknamed " Black Holes in the ocean " . So thanks Kilo Where can achieve the same degree of smoothness ?This ability may be , firstly by rounded hull design , rubber coated layer is thick , the sound absorption including infrasound and low-frequency eddies , while reducing drag. Rubber coated layer scheme Kilo Vietnam's 636 simulated leather texture dolphins , including laminated woven into each tooth comb . Outside the rubber layer billion cubic light to reduce sonar signal reflections , inner rubber layer is the larger mass ratio to absorb sound .
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636 Kilo dubbed " black hole in the ocean ."The second is due to the engine . The removal of low frequency infrasound submarine very difficult , but the sound down so far this transmission , and to expose the submarine position . Scheme Kilo 636 diesel and used generators , so it should be possible to completely shutdown , the sea lying in ambush enemy , minimizing the infrasound emitted . Improved Kilo not use actuators with gear noise , which co- designed motor with propeller shaft speed ; the engine applies new techniques to minimize noise .Third, to limit the whirlpool, improved Kilo 7 wing propeller uses large diameter , cupped the fish effigy . Front propeller concentric grooves are sawn , minimizing water swirling .Thanks to the three specifications , Kilo 636 scheme has very low noise level . For comparison , we can provide the representative submarine attack America's most modern Virginia .
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Although very modern , but American submarines Virginia " noisy " than Kilo so many times .Virginia Submarine water displacement of 7,800 tons , twice the amount of water relaxation Kilo is 3950 tons ( submerged ) submarine Virginia but using nuclear reactors with a capacity of up to 30MW , more than 7.5 times the capacity of 4MW Kilo . When running the same speed 20 knots / h , Virginia submarine used 6 times capacity improvement Kilo . Therefore, revealing the level of infrasound , whirlpool and 6 times higher , serious threat to the ship's secrets .In addition, the improved Kilo class submarines can dive up to 300m deep infrasound to reduce reflections , while Virginia submarine can dive 240m deep .When you turn off the engine , Kilo totally quiet , which can lie dormant in the sea ambush the enemy without being detected , while Virginia submarines in any given moment to run nuclear reactors staff , large noise . In turn , improved Kilo class submarines will have periodically surfaced for air , and to expose the ship location . However, this is not so important , because Vietnam used 636 submarines scheme for sovereign duty to protect islands , submarine operations not too far from shore .It can be said , in the hands of the Vietnam People's Navy , 636 Kilo scheme is a weapon , a " black hole " in the sea causing terror to the enemy . Kilo submarines with surface ships and shore missiles will be three main sets of the Vietnam People's Navy in the protection of national sovereignty over islands .

Tàu Kilo Hà Nội êm hơn tàu ngầm hiện đại nhất của Mỹ
 
Kilo is made in Russia.

By the term of the Vietnamese submarine, I think you must mean this.

Can you tell me, any modern weapon China own, not originated from Russia, USA ?
Your Kilo not made in Russia ?
Where is your Liaoning launched ?
 
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Can you tell me, any modern weapon China own, not originated from Russia, USA ?
Your Kilo not made in Russia ?
Where is your Liaoning launched ?

Our nuclear subs are not originated from Russia.

Our missiles are not originated from Russia.

Liaoning is just a test platform, while China's future aircraft carriers will not resemble any Soviet carrier.
 
Vietnamese are really Chinese, they just don't know it yet.

Then you vietnamese shall just bow to the Chinese father :lol:

It is a great blessing Vietnam buys Russian Kilo. Russian has a deal with China, in case of any conflict of China and Vietnam. Russia will give all the source code and secret of those hardware sold to Vietnam.

In terms of priority, Russia rank China higher than Vietnam, Vietnam to Russia has no value :lol:
 
The 'black hole' term originated during the cold war, when Kilo's first appeared and were a marked improvement over earlier classes of soviet conventional subs in terms of noise reductions and the use of anechoic tiles. Those tiles iles are fitted on casings and fins to absorb the sound waves of active sonar, which results in a reduction and distortion of the return signal. These tiles also help attenuate sounds that are emitted from the submarine, thus reducing the range by which the sub may be detected by passive sonar. This caused the subs to apparently disappear from sonar. The first submarine entered service in the Soviet Navy in 1980. Undoubtely, Kilo's are quiet. However, it has been 35 years and both sonar technology and processing capabilities have changed since then ...

Project 877 / Kilo first entered service 1981
Project 636 / Improved Kilo first entered service 1997

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