Yuan Class AIP & Kilo Submarine Thread

[antiterror13]

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China’s submarine fleet may soon be powered by lithium batteries​

• Technical solutions have been found through extensive development and testing in booming electric car market, according to navy study
• Researchers say that replacing problematic lead-acid batteries with lithium could significantly boost subs’ survival and combat abilities

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in Beijing

Published: 12:00pm, 29 Oct, 2022 Updated: 12:00pm, 29 Oct, 2022

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China’s military has been planning to replace lead-acid batteries with lithium in its conventional submarines for more than a decade. Photo: Twitter

China’s large fleet of conventional submarines could soon be powered by lithium-ion batteries as a result of advances in the country’s world-leading

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, according to a Chinese navy study.

A lithium power source – instead of lead-acid batteries – could more than double the time a submarine can spend under water, give it Tesla-style acceleration and create more room for weapons, said researchers with the Naval Submarine Academy in Qingdao, Shandong province.

The changes could significantly boost a submarine’s survival and combat abilities, they said in a paper published in peer-reviewed Chinese journal Marine Electric and Electronic Engineering on October 15.

Surely China has managed to overcome safety issue with Li-Ion ... perhaps like BYD blade battery but with much more advanced version

Interesting what other bans will be impose to Chinese companies? perhaps ban all Chinese EV and CATL and BYD, as it is in a way helping Chinese military according to the idiots there

 

[tphuang]

Are they trying to say that 039C is not already using LIB? I would be very surprised if that's the case. It would make little sense to wait 4 years to start 039C unless they are using a host of new technology like LIB (most likely LFP), permanent magnet motor and the latest high efficiency power chips. I would say this is the best time to do quick iterations of this technology. LIB energy density, power chip efficiency and electric motor technology in general have increased so much in the past 2 years even.

 

[FairAndUnbiased]

Are they trying to say that 039C is not already using LIB? I would be very surprised if that's the case. It would make little sense to wait 4 years to start 039C unless they are using a host of new technology like LIB (most likely LFP), permanent magnet motor and the latest high efficiency power chips. I would say this is the best time to do quick iterations of this technology. LIB energy density, power chip efficiency and electric motor technology in general have increased so much in the past 2 years even.

if they say they're going to use LIB, that means LIB is already deployed.

 

[by78]

A Yuan on the cover of Naval & Merchant Ships magazine.

 

[by78]

Another nice magazine scan of Yuan.

 

[by78]

One more magazine scan of Yuan.

 

[antiterror13]

Is it 039C ?

 

[by78]

A Yuan in the snow.

 

[by78]

Five more.

 

[kurutoga]

虽然潜艇在水下活动，但太空中的卫星可以通过广域检测实现太空对潜追踪，比如核潜艇需要使用外部海水冷却内部反应堆，因此航行时会排放出温度较高的废水，导致周边海水温度上升，卫星可以使用热成像系统对海洋温度进行广域监视，一旦发现某片海域出现不明原因的升温就可以提醒反潜平台前往侦察。此外潜艇在水下航行时，螺旋桨搅动海水也可能产生足以在海面上观测的波动，SAR（合成孔径雷达）侦察卫星拥有探测海洋表面细微波纹的能力，搭配合适的算法和观测手段可以直接从太空中观测潜艇搅动海水产生的大范围细微波纹，从而反推出潜艇的精确位置；

How true is it? It says satellites can detect warm water dispatches from nuclear subs, and tiny waves at the sea surface to calculate the position of the subs.