PLA Navy news, pics and videos

gelgoog

Brigadier
Registered Member
IEPS means there will be less transmission losses because the length of the shafts will be shorter. You'll want to go electric anyway, because you need the power to run more advanced weapons systems. With the regards to a gas turbine power frigate, that also makes sense, because otherwise the fleet will move at the speed of the slowest vessel. But it might drive some costs up. Like fuel consumption should be larger.
 

Iron Man

Major
Registered Member
IEPS means there will be less transmission losses because the length of the shafts will be shorter. You'll want to go electric anyway, because you need the power to run more advanced weapons systems. With the regards to a gas turbine power frigate, that also makes sense, because otherwise the fleet will move at the speed of the slowest vessel. But it might drive some costs up. Like fuel consumption should be larger.
I don't think shaft length has much of anything to do with "transmission losses" if by that you mean efficiency losses, the overwhelming majority of which actually comes from the transmission gearing itself.
 

antiterror13

Brigadier
The placement of the electric motors will only (potentially) shorten the length of the shafts, but will not eliminate the need for them.

I think the shafts could potentially be very short, I don't think it matters where the electric motors are, you simply could use power cable from electric motors to the shafts
 

Iron Man

Major
Registered Member
I think the shafts could potentially be very short, I don't think it matters where the electric motors are, you simply could use power cable from electric motors to the shafts
The electric motors have to be directly (mechanically) connected to the shafts. It's the engines that can be located further away from the motors via power cables.
 
didn't know about a Dongdiao-class part:
China Sent Uninvited Spy Ship to Russian Vostok 2018 Exercise Alongside Troops, Tanks
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Russia recently concluded the 2018 edition of the massive Vostok exercise series that included Chinese forces for the first time. At Moscow’s invitation, Beijing sent People’s Liberation Army soldiers, helicopters, tanks – and one uninvited Chinese surveillance ship.

A PLA Navy Dongdiao-class auxiliary general intelligence (AGI) shadowed Russian Navy assets for the length of the at-sea portion of the exercise while Chinese and Mongolian troops exercised ashore, a U.S. official confirmed to USNI News.

The PLA sent about 3,500 troops for the ground portion, but it was unclear if the PLA Navy was invited to send warships to drill with the Russians.

Details from Russia on the exercise have been inconsistent, but Russian state-supported media claimed it was the largest exercise in modern Russian history.

“Taking part in it will be about 300,000 troops, more than 1,000 planes, helicopters and drones, up to 80 combat and logistic ships and up to 36,000 tanks, armored personnel carriers and other vehicles,” Russian defense minister Sergei
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in state-controlled media.

The drills come as Moscow and Beijing have made public declarations of increasing cooperation – including Russian President Vladimir Putin and Chinese officials meeting during the exercise.

“[Vostok 2018’s] main political significance comes from the signaling by both Russia and China about the possible emergence of a strategic partnership, aimed at countering the threat that both countries feel from continued U.S. dominance of the international system,” Dmitry Gorenburg wrote for
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last week.

There is also a practical military technology reason for cooperation, Bryan Clark, a naval analyst at the Center for Strategic and Budgetary Assessments, told USNI News on Monday.

China has a larger military force than Russia, but it is still trailing Russia and the West in terms of the sophistication of its missiles, radar, jet engine and electronic warfare technology. At the same time, Russia has had problems developing modern unmanned aerial vehicle technology, an arena which China has excelled, Clark said. While the military technology cooperation used to be one-way, in terms of UAVs China is “way ahead of the Russians,” he said.

The trade in those technologies has done much to define the new military cooperation between Beijing and Moscow.

But despite the increased military cooperation, Clark said the opportunity to absorb lessons from the more technologically sophisticated Russian Navy’s operations was too good an opportunity for the PLAN to pass up.

“The reality is Russia is very good at radar operation and electronic warfare,” Clark said.
“I wouldn’t be surprised that the Chinese would want to harvest that during the Vostok exercise.”

While monitoring an adversaries’ exercises with ships that can collect signals intelligence has been common practice for decades and is legal under international law, surveilling an ally while training alongside that ally in an exercise is an uncommon practice – uncommon, but this won’t be the first time China has deployed an uninvited surveillance ship to a friendly exercise. China was formally invited to participate in the 2014 Rim of the Pacific exercise, and Beijing sent four invited PLAN warships plus an uninvited Dongdiao AGI to track the exercise
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Lethe

Captain
So 052E should fix that

AFAIK the 9-metre cell is used only for offensive weapons, and it has been understood since WW2 that surface ships are primarily defensive rather than offensive tools. If you need more than 16 cruise missiles then bring an 055, or a carrier battle group (or an SSGN).
 

Tam

Brigadier
Registered Member
AFAIK the 9-metre cell is used only for offensive weapons, and it has been understood since WW2 that surface ships are primarily defensive rather than offensive tools. If you need more than 16 cruise missiles then bring an 055, or a carrier battle group (or an SSGN).

7 meter long cell can also be used for offensive weapons, in particular, cruise missiles. The 9 meter long cell is a particular weapon for now, likely only for the YJ-18 antiship missile.
 
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