Next-gen DDG, large DDG and type 076. This list only refers to gas turbines for industrial use
Chinese Marine Propulsion
- Thread starter jobjed
- Start date
interesting story here about CSSC JN and molten salt reactor proposal.
included not only reactor, but also green fuel production platform, ammonia powered coastal feeder ship and nuclear powered container transfer terminal.
It looks like they are taking this concept of nuclear reactor or MSR reactor on shipping and offshore quite seriously. At minimum, JN shipyard appears to be a major hub of nuclear powered offshore platform going forward. And in light of the newly discovered SSN at JN, it makes sense now for them to be setting up a permanent nuclear support facility there.
That submarine was started building way before February.
I wonder how they're going to arrange these turbines for use in future ship classes
CGT30 is a pretty big step up and using 4 of them COGAG seems pretty excessive for 055 or even a enlarged 055. Using 2 or 3 in IEP format like Zumwalts would be ideal but seems like a gamble. Unless we go way larger to something like 20,000 tons then using 4 makes more sense.
Using 2 CGT30s COGAG/CODOG/CODAG would make sense for a future 052D replacement if it displaces around 9000 tons but again I wonder if they could try to go for something new like IEP or CODLAG/CODLOG with 1 x CGT30 + diesels just like the Constellations or Type 26s
And 1 x CGT30 + diesels CODOG/CODAG seems like the sweet spot for a 5000ish ton frigate, similar to the Italian PPA
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There is also the purported IEP setup with 2*9MW diesels plus 2*33MW gas turbines
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I'm learning my towards a Type-052D successor not being produced, so it would be the following tiers:
6000tonne Type-054B Frigate
12000tonne Type-055 Destroyer
A future 20000? Tonne BMD Cruiser
The specific ASW mission would be covered by something like the 1000tonne high-speed semi-submersible (uncrewed or with a minimal crew of 20?) equipped with a small bow sonar, TAS, VDS and some ASW torpedoes.
I stumbled upon a rather interesting paper by a Dutch guy which gives recommendations for the Dutch ASWF frigate
It mainly talks about CODLAD, which is what was used for the ASWF.
It seems to say that even with CODLAD arrangement of 4 x MAN 16V28/33D (7.28MW each) + 2 x MV 560 (generating 2.6MW each for electric drive) for a total of 34.32 MW, max speed for a 6000 ton ship is only 28.4 knots.
Even if you increase power of the 4 main propulsion engines to MAN 20V28/33D with 9.1MW each for a total of 36.4MW, max speed is only 28.7 knots.
I think this tracks with what we've seen in the past, like Iver Huitfeldt class uses four 8.2MW diesel engines and is also limited to 28 knots. Generally seems like 28 knots is a limit for 4 x diesels, even with electric motors assisting. It also means 054B with 4 x CS16V27 (7.28MW each) is probably close to the size limit if they don't want speed to drop below 28 knots.
I think this is a bit of a headache for a proper 054B successor IF we assume the requirements for it are:
1. quiet enough for ASW
2. able to sustain over 30 knots to keep up with carriers
3. cheap enough to mass produce
To fulfil 1 you ideally want electric motors, so diesel electric + something
To fulfil 2, this paper says that CODLOD / CODLAD are eliminated because they just aren't fast enough. Unless you go with something ridiculous like 6 main diesels. So you're basically forced to go with a gas turbine. So a proper 054B replacement will probably need CGT-30 + diesel electric, which is a rather big change and rather expensive, so it contradicts 3.
It mainly talks about CODLAD, which is what was used for the ASWF.
It seems to say that even with CODLAD arrangement of 4 x MAN 16V28/33D (7.28MW each) + 2 x MV 560 (generating 2.6MW each for electric drive) for a total of 34.32 MW, max speed for a 6000 ton ship is only 28.4 knots.
Even if you increase power of the 4 main propulsion engines to MAN 20V28/33D with 9.1MW each for a total of 36.4MW, max speed is only 28.7 knots.
I think this tracks with what we've seen in the past, like Iver Huitfeldt class uses four 8.2MW diesel engines and is also limited to 28 knots. Generally seems like 28 knots is a limit for 4 x diesels, even with electric motors assisting. It also means 054B with 4 x CS16V27 (7.28MW each) is probably close to the size limit if they don't want speed to drop below 28 knots.
I think this is a bit of a headache for a proper 054B successor IF we assume the requirements for it are:
1. quiet enough for ASW
2. able to sustain over 30 knots to keep up with carriers
3. cheap enough to mass produce
To fulfil 1 you ideally want electric motors, so diesel electric + something
To fulfil 2, this paper says that CODLOD / CODLAD are eliminated because they just aren't fast enough. Unless you go with something ridiculous like 6 main diesels. So you're basically forced to go with a gas turbine. So a proper 054B replacement will probably need CGT-30 + diesel electric, which is a rather big change and rather expensive, so it contradicts 3.
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