PLAN Sovremenny DDG 136, 137, 138 & 139 Thread

[lucretius]

If I understand it correctly, the RN won't replace the complete propulsion system but it will apply some fixes to the heat recuperation system of the gas turbines and replace the diesel generators with more powerful versions (which requires cutting open the hull).

Indeed... as this diagram shows replacing the Diesel Gen set's is nearly as involving as replacing the whole system

 

[Twix101]

Indeed... as this diagram shows replacing the Diesel Gen set's is nearly as involving as replacing the whole system

In other words, better start building a new ship. But still, they can bring some improvements to the actual propulsion system. Mainly to improve reliability, efficiency and serviceability.

 

[by78]

Unfortunately it's something the Royal Navy has had to do on it's type-45's, so it's not unprecedented

Type-45s have defects in the propulsion system that require repairs. That's a completely different situation.

And I suppose they they might as well upgrade the diesel generators while they are down there, seeing that they've already gutted the ships just to make them sailable again.

 

[damitch300]

The ship i serve on went from V16 big hard knocking diesels to V14 turbo and about half the size.
We will get an hybrid system aswell soon.
The ship turns 30 this month.

 

[abc123]

No, they won't. It's not worth the time, the trouble, or the cost. Taking out the propulsion system requires gutting the ship, all the way down to the bottom deck, and what about the reduction gears? Those might need modification and replacement too. It's easily a 12-16 month job for a bunch of old ships. This is why ships stay with their propulsion system for life. We are not talking about swapping an engine out of a Chevy here.

OK, but let's take hypothetical sitation of Russian Sovremeney's back in the 90s. Would it pay to replace their steam turbines with some other propulsion ( gas turbines or whatever ), when oldest of these ships were about 10 years old?

 

[delft]

OK, but let's take hypothetical sitation of Russian Sovremeney's back in the 90s. Would it pay to replace their steam turbines with some other propulsion ( gas turbines or whatever ), when oldest of these ships were about 10 years old?

That would mean a massive rebuilding. We do not know what was done to the Liaoning power plant but it was sufficient. What is the basis of the notion that the Sovremenny power plants are bad?

 

[by78]

OK, but let's take hypothetical sitation of Russian Sovremeney's back in the 90s. Would it pay to replace their steam turbines with some other propulsion ( gas turbines or whatever ), when oldest of these ships were about 10 years old?

Why would you import such a big ticket item knowing that you will gut it to replace its propulsion system only 10 years into service?

 

[FORBIN]

Why would you import such a big ticket item knowing that you will gut it to replace its propulsion system only 10 years into service?

Exact, first initialy for Soviet Navy of 1999 and more recent 2005.

 

[weig2000]

OK, but let's take hypothetical sitation of Russian Sovremeney's back in the 90s. Would it pay to replace their steam turbines with some other propulsion ( gas turbines or whatever ), when oldest of these ships were about 10 years old?

Sovremeney's were imported as stop-gap measures in the short-term back then before China's newest-generation of destroyers were commissioned in sufficient numbers, when China was under under tremendous pressure of dealing with what seemed to be an imminent Taiwan contingency. Sovremeny's and the Moskit AshM were billed as China's "carrier-killer" at the time. There was no time to allow for any significant rebuild, even it's feasible.

Yes, that's how desperate the situation was at the time.

 

[abc123]

Sovremeney's were imported as stop-gap measures in the short-term back then before China's newest-generation of destroyers were commissioned in sufficient numbers, when China was under under tremendous pressure of dealing with what seemed to be an imminent Taiwan contingency. Sovremeny's and the Moskit AshM were billed as China's "carrier-killer" at the time. There was no time to allow for any significant rebuild, even it's feasible.

Yes, that's how desperate the situation was at the time.

Yes, but I was speaking about RUSSIAN Navy Sovremeny's, not Chinese Navy Sovremenny's...