The Type 055A will displace more than 18000 tons

[ChineseTiger1986]

Here is China's new GT25000IC (QC-280IC) gas turbine.

One single gas turbine can output 40MW, so four engines can output around 160MW, so it is enough to run a 18000 tons destroyer which can outputs nearly twice as much as a Burke (80MW in four LM2500).

The Type 052D uses QC-280A, which can output 2 * 33MW to run a 7500 tons destroyer.

So the future Type 055A will be large enough to ensure enough room for the laser weapons and the rail gun.

5万马力的GT25000IC间冷循环燃气轮机已完成中试-海军版-超级大本营军事论坛-最具影响力军事论坛 -

 

[TheMatador]

Gas turbine technology now world class

 

[ChineseTiger1986]

Gas turbine technology now world class

Yep, thanks to Ukraine, we have jumped into the world class gas turbine technology.

But unfortunately for Ukraine, they are now using everything.

 

[TimeToScoot]

Yep, thanks to Ukraine, we have jumped into the world class gas turbine technology.

But unfortunately for Ukraine, they are now using everything.

Didn't get this. Why thanks to Ukraine? And what do you mean by 'they are now using everything'?

 

[Manindra]

Didn't get this. Why thanks to Ukraine? And what do you mean by 'they are now using everything'?

Because ToT from Ukraine

 

[TimeToScoot]

Because ToT from Ukraine

Ah. Is building a gas turbine really that difficult considering the Chinese have developed powerful cryogenic engines for space applications?

 

[ChineseTiger1986]

Didn't get this. Why thanks to Ukraine? And what do you mean by 'they are now using everything'?

Ukraine provided the joint development of the GT25000 gas turbine, thanks to them we have fully mastered this technology.

For now the QC-280IC is fully indigenous, and this makes China closing its gap with US/UK.

Ah. Is building a gas turbine really that difficult considering the Chinese have developed powerful cryogenic engines for space applications?

Yeah, it is also very difficulty to develop, even Russia has lost its gas turbine sector after the dissolution of USSR.

 

[TimeToScoot]

@ChineseTiger1986

Interesting. Thanks for responding and congratulations

 

[Penguin]

Here is China's new GT25000IC (QC-280IC) gas turbine.

One single gas turbine can output 40MW, so four engines can output around 160MW, so it is enough to run a 18000 tons destroyer which can outputs nearly twice as much as a Burke (80MW in four LM2500).

The Type 052D uses QC-280A, which can output 2 * 33MW to run a 7500 tons destroyer.

So the future Type 055A will be large enough to ensure enough room for the laser weapons and the rail gun.

5万马力的GT25000IC间冷循环燃气轮机已完成中试-海军版-超级大本营军事论坛-最具影响力军事论坛 -

I'm confused. You seem to be deriving displacement from the power output potential of a single particular GTu. Is it even certain this particular GTu will be part of the propulsion plant driving 055? Or that the plant would us 4 of them?

COGAG with 2 GTu each of 2 GTu types is also possibility?

Or CoDOG with 2 of these GTu and 2 diesels, like 052Ds?


Just for comparison:

The 15k ton DDG-1000 Zumwalts are powered as follows:
Propulsion:2 Rolls-Royce Marine Trent-30 gas turbines plus 2 Rolls-Royce RR4500 gas turbine generator sets, 78 MW
Speed:30.3 knots (56.1 km/h; 34.9 mph)
http://en.wikipedia.org/wiki/USS_Zumwalt_(DDG-1000)

Trent 30 = 36MW flat rated to 38oC and 40MW at 15oC (ISO).
MT30 Marine gas turbine engine - Rolls-Royce


The LM2500 is GE's most widely-applied gas turbine, used by 33 navies worldwide
LM2500 Output=33,600 shp (25,060 kW)

Applications for the LM2500+ include military combatants and amphibious ships.
LM2500+ Output=40,500 shp (30,200 kW)

The LM2500+G4 is for the Italian, French and Moroccan FREMM frigates and other military ships
LM2500+G4 Output=47,370 shp (35,320 kW)

The LM6000 includes military amphibious ships, floating production offloading vessels and LNG carriers as applications.
Output
LM6000PC = 56,900 shp (42,428 kW)
LM6000PG = 70,275 shp (52,403 kW)

Military | Marine Propulsion | Engines | GE Aviation

And

Products & service
Gas turbine engine UGT60000 (UGT 45 000)
UGT60000
Power, kW 63500
UGT45000
Power, kW 47700
Gas turbine engine UGT 25000
Power, kW 28700

 

[Speeder 2]

Ah. Is building a gas turbine really that difficult considering the Chinese have developed powerful cryogenic engines for space applications?

The technology was first developed by R&R of the UK about a decade ago, followed by the US and France (due to direct UK involvement?), while Germany and Japan developed their own (without the involvement of the UK?) even since.

I don´t know the current levels of Russia and Ukraine though.

Why is difficult?

It's because there're over 800 small pieces inside this turbine intercooler, including hundreds of welding surfaces which require advanced one-time welding technique to ensure the sealing performance and sufficient bonding strength. When put to work, they need to withstand the movement of 10,000 cycles at pressure level of 0.5MPa without any distortion of the pieces involved and with no leakage whatsoever.

It tests the sophistication of the corresponding industrial processing techniques, materials science level and advanced manufactoring capability of a country. Achieving this is a huge milestone, meaning that China is almost catching up with the most advanced industrial countries on this key gas turbine technology.

 

[ChineseTiger1986]

I'm confused. You seem to be deriving displacement from the power output potential of a single particular GTu. Is it even certain this particular GTu will be part of the propulsion plant driving 055? Or that the plant would us 4 of them?
View attachment 105065

COGAG with 2 GTu each of 2 GTu types is also possibility?

View attachment 105066​

Or CoDOG with 2 of these GTu and 2 diesels, like 052Ds?


Just for comparison:

The 15k ton DDG-1000 Zumwalts are powered as follows:
Propulsion:2 Rolls-Royce Marine Trent-30 gas turbines plus 2 Rolls-Royce RR4500 gas turbine generator sets, 78 MW
Speed:30.3 knots (56.1 km/h; 34.9 mph)
http://en.wikipedia.org/wiki/USS_Zumwalt_(DDG-1000)

Trent 30 = 36MW flat rated to 38oC and 40MW at 15oC (ISO).
MT30 Marine gas turbine engine - Rolls-Royce


The LM2500 is GE's most widely-applied gas turbine, used by 33 navies worldwide
LM2500 Output=33,600 shp (25,060 kW)

Applications for the LM2500+ include military combatants and amphibious ships.
LM2500+ Output=40,500 shp (30,200 kW)

The LM2500+G4 is for the Italian, French and Moroccan FREMM frigates and other military ships
LM2500+G4 Output=47,370 shp (35,320 kW)

The LM6000 includes military amphibious ships, floating production offloading vessels and LNG carriers as applications.
Output
LM6000PC = 56,900 shp (42,428 kW)
LM6000PG = 70,275 shp (52,403 kW)

Military | Marine Propulsion | Engines | GE Aviation

And

Products & service
Gas turbine engine UGT60000 (UGT 45 000)
UGT60000
Power, kW 63500
UGT45000
Power, kW 47700
Gas turbine engine UGT 25000
Power, kW 28700

The Type 055 is COGAG, while the Type 052D is CODOG.

The early Type 052C: 2 x 24MW = 48MW (GT25000)
The late Type 052C: 2 x 28MW = 56MW (QC-280)
The Type 052D: 2 x 33MW = 66MW (QC-280A)
The Type 055: 4 x 33MW = 132MW (QC-280A)
The Type 055A: 4 x 40MW = 160MW (QC-280IC)

 

[cirr]

What's this gas turbine using S-S Cycle？

 

[rendong]

 

[Penguin]

The Type 055 is COGAG, while the Type 052D is CODOG.

The early Type 052C: 2 x 24MW = 48MW (GT25000)
The late Type 052C: 2 x 28MW = 56MW (QC-280)
The Type 052D: 2 x 33MW = 66MW (QC-280A)
The Type 055: 4 x 33MW = 132MW (QC-280A)
The Type 055A: 4 x 40MW = 160MW (QC-280IC)

What is the source for that (i.e. is that official or speculation)?

Aside: if that is the propulsion plant indeed, it still does not make sense to derive displacement from that.

 

[qwerrty]

View attachment 106501