PLAN Aircraft Carrier programme...(Closed)

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joshuatree said:
Using steam boilers is rather archaic now.
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That's a common misconception.

joshuatree said:
It would make sense to switch over to gas turbines.
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Actually, it will not, especially if China's long term goal is to build nuclear powered super carriers. That's because a nuclear reactor is just a glorified steam boiler.

joshuatree said:
Whether this helps reduce the size of the smokestack will also be a factor with island size.
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It won't help. One reason why the Queen Elizabeth class has two islands is because the two gas turbines each needs an island to house the enormous exhaust. On American conventional carriers, the island is small but is sufficient to houses both intakes and exhausts require for all boilers.

joshuatree said:
The island itself should be relocated further aft to improve deck ops.
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This isn't an option unless the carrier is nuclear powered. The island houses the exhaust, and the exhaust must sit on top of the boilers. The boiler room is placed amid ship, with turbines placed immediately in front and aft of the boiler room, so as to reduce the amount of plumbings. So, there is no choice but to place the island amid ship as well.
 
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Bltizo said:
The pics from yesterday definitely does look like a carrier under construction.

Compare to Gerald R Ford construction a few years back, what we're seeing at DL seems at an earlier stage compared to this photo

uss_gerald_r_ford_cvn_78_under_cons_1056002602.1680x0.jpg
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I think this is a better comparison.
ygOBKPT.jpg
 
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joshuatree

Captain
Engineer said:
That's a common misconception.


Actually, it will not, especially if China's long term goal is to build nuclear powered super carriers. That's because a nuclear reactor is just a glorified steam boiler.
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Well one doesn't really see any new non-nuclear naval vessels being commissioned these days that are steam powered.

A non-nuclear steam powered vessel requires much more time to get underway, not unless the boilers are constantly fired up. A nuclear reactor doesn't shut down once activated till decommission. So yes, related, but not the same.


Engineer said:
It won't help. One reason why the Queen Elizabeth class has two islands is because the two gas turbines each needs an island to house the enormous exhaust. On American conventional carriers, the island is small but is sufficient to houses both intakes and exhausts require for all boilers.

This isn't an option unless the carrier is nuclear powered. The island houses the exhaust, and the exhaust must sit on top of the boilers. The boiler room is placed amid ship, with turbines placed immediately in front and aft of the boiler room, so as to reduce the amount of plumbings. So, there is no choice but to place the island amid ship as well.
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Good point.
 
N

no_name

Colonel
wvwsvr.jpg


Comparison with Ford, assuming both has bow facing out the dock (to the right of pic).

Intrepid said:
I recognize a torpedo-protection system consisting of three chambers. This is more common in aircraft carriers than in helicopter carriers.
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Is that the three layers of blue looking feature near the side hull in the first pic? Can you tell us what does it do? Can we use those layers to judge where the waterline extends to?
 
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