CV-18 Fujian/003 CATOBAR carrier thread

[antiterror13]

There were no indications that it would have IFEP (integrated full electric propulsion), like the QE2 class.

Based on rumors disseminated by other forum members, PLAN is developing a MVDC ship electric architecture, and its operating voltage is expected to fall withing the 3kV-10kV range. It is as of yet unclear how mature this technology is.

From an engineering viewpoint, even the upper range of 10kV may not be sufficient to route 200MW+ of power that the Type 003 may be generating. For example, the QE2 employs a 11kV grid to distribute roughly 120MW of power. The Ford class carriers employ an even higher voltage grid to distribute an undisclosed level of electric power, but estimated slightly above QE2 total produced power.

It might be possible to get by with lower voltage and a less integrated grid architecture. The 1920s US electric propulsion aircraft carriers of Lexington class, generated roughly 150MW of electric power. They used 4 parallel turbo generators providing 5000V DC current at 4620 amps (rated at 35MW), each on its own separate line to the electric motors.

Yeahhh, The cable size would be too big

 

[Anlsvrthng]

Design of electrical systems has many constrain.

The power plant turbogenerators use 20kv because it is in the sweet spot of the acceptable price / sized generators - increase the voltage would eliminate the need for transformers, but increase the insulation requirements in the generator windings, and increase the airgap, that in turn decrease the efficiency of the generator and increase its size.

Hence the reason of the Lexington 5kv distribution system, that was the best insulation that they had for the generators.

 

[Jono]

considering the needs of China in the next 5-10 years:
need to cater for expected political upheavals across the Taiwan Strait,
need to safeguard the interests of the SCS,
need to safeguard the BRI marine routes,
need to train up hundreds of carrier certified naval pilots as quickly as possible,
need to have as many carriers as possible to provide the above essential services and training, etc etc.
so the needs are huge, manifold and urgent, therefore China needs all the carriers that she can muster, and time is rather short.
Focus is on needs, and not pies in the sky. As such I would envision China building more type 003, while retaining the CV 16 and 17 in their present form mainly for training.
I speculate that only after China would feel confident in strength and in numbers, which type 003 can certainly provide, will she move to develop CVN, and converting CV 16/17 to catapult, if the time and expense are worth the efforts.

 

[Deino]

Just in case I missed it ... no new images since about 2 weeks? At least it feels like 2 weeks.

 

[davidau]

considering converting CV 16/17 to catapult needs of China in the next 5-10 years:
need to cater for expected political upheavals across the Taiwan Strait,
need to safeguard the interests of the SCS,
need to safeguard the BRI marine routes,
need to train up hundreds of carrier certified naval pilots as quickly as possible,
need to have as many carriers as possible to provide the above essential services and training, etc etc.
so the needs are huge, manifold and urgent, therefore China needs all the carriers that she can muster, and time is rather short.
Focus is on needs, and not pies in the sky. As such I would envision China building more type 003, while retaining the CV 16 and 17 in their present form mainly for training.
I speculate that only after China would feel confident in strength and in numbers, which type 003 can certainly provide, will she move to develop CVN, and converting CV 16/17 to catapult, if the time and expense are worth the efforts.

 

[davidau]

Converting CV 16, CV17 with EMALS operations would be prohibitively expensive. To say the lease, you have to remodel the angled flgiht deck to flat, extra electric power and space requirements, installation of the EMALS and so on. It will take more structural changes, and a lot more costs. It will probably cost more than anew build. Not cost-effective.

 

[Tyler]

Converting CV 16, CV17 with EMALS operations would be prohibitively expensive. To say the lease, you have to remodel the angled flgiht deck to flat, extra electric power and space requirements, installation of the EMALS and so on. It will take more structural changes, and a lot more costs. It will probably cost more than anew build. Not cost-effective.

It is more cost effective to build more type 076 with catapults.

 

[Sczepan]

China building more type 003

excuse my asking, but as I know,
only Liaoning was called "type 001", and carrier 001
next carrier Shandong is only called carrier 002, suspected to be "type 001 A" because of the modifications at the island
the third is carrier 003, but not type 003 - could be type 002 if Shandong was "001 A", now including cat, a bigger hul and again minor modifications at the island - may be more of this type could be build;
which ship is type 003 - the suspected nuclaear powered next big step?

 

[Intrepid]

We already clarified that two years ago:
Type 001A was an invention of the fan base.

Type 001 = #16 = Liaoning
Type 002 = #17 = Shandong

The official Chinese type designation of the ship currently under construction is not yet known. The fan base calls it Type 003 and expects the penannt number #18.

 

[Atomicfrog]

I don't know the price difference of Type 002 and the new one ''Type 003''.... but to go all the way to build an improved Kuznetsov type design and just build one is a bit sad.