052C/052D Class Destroyers

lcloo said:

我问 Copilot：
“是否可以在不加长船体的情况下延长驱逐舰船尾的直升机停机坪的长度？"

AI 聊天机器人回答道：
是的，可以在不增加船体总长度的情况下延长驱逐舰船尾的直升机停机坪。这可以通过设计和添加从现有船尾结构向外伸出的悬臂式延伸部分或平台来实现。以下是此类扩展的一些注意事项：

1. 结构加固：扩建部分需要有坚固的支撑，以承受直升机作产生的重量和应力。这可能涉及加固现有的船尾或集成轻质但坚固的材料。
2. 稳定性：延长直升机停机坪会改变飞船的重量分布，从而可能影响其稳定性。仔细的设计和压载物调整对于保持适当的平衡和适航性是必要的。
3. 流体动力学影响：虽然船体长度保持不变，但增加的结构可能会影响船舶的流体动力学，尤其是在波涛汹涌的海面上。设计人员必须确保对机动性和效率的影响最小。
4. 实用性和可访问性：扩建设计应满足运营需求，包括维护和直升机安全作的通道。

这种改装之前已经在一些海军舰艇上实施过，证明这是一个可行的解决方案。您是否希望获得更详细的示例，了解这种方法如何应用于实际案例？

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我记得 Yankeesama 在 2018 年第一个 052dl 推出后已经讨论过这个问题。他的结论是，吃水线长度不需要改变。

I find it curious that we are going to have 39 in total soon.
Consisting of 13 originals and 26 longer ones.
They are building double the amount of longer ones.

@ACuriousPLAFan didn’t you say the other day that there wouldn’t be any more 052D’s after this batch, but I see you mentioned 40 above?

Andy1974 said:

I find it curious that we are going to have 39 in total soon.
Consisting of 13 originals and 26 longer ones.
They are building double the amount of longer ones.

@ACuriousPLAFan didn’t you say the other day that there wouldn’t be any more 052D’s after this batch, but I see you mentioned 40 above?

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I didn't say that the current (4th) batch and the overall 052D/DG-class will stop at XX ships.

I only said that the current (4th) batch of 052DGs would be the last of the 052D/DG-class, and thus the entire 052-family DDGs, as per @勤劳朴实罗素历 on Weibo.

snake65 said:

Obvious limitation for such MLU is the aft UVLS. You can't move the hangar forward, so the only other option is to chop it shorter (if there is space enough for Z-20) and extend the helipad a bit over stern. Extending the hull with a plug-in will require quite a rebuild of the stern part, don't think it's practical time/money wise.

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you don’t need a plug. You can lengthen the hull by grafting a 4 meter counter to the end of the stern. You may need to adjust the gear for towed sonar or decoys that originally deploys through ports in the old stern.

lcloo said:

Here is my own drawing, it is crude and basic layman's design. The existing hangar can be extended by flexible portion on rollers so that it can be moved outward if needed. The helipad extension may be similar to the extensions on type 075/076 or aircraft carrier but on much smaller scale.
View attachment 148149

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Ahhh, I see what you meant, yes thats should be easy enough and would do the job well. I was thinking too complicated and more for permanent solution by extended the body which is unnecessary for that Z20 issue

antiterror13 said:

I am intrigue to your answer that you mentioned "quite easy" .... I thought it was complicated. I am engineer but obviously not marine engineer. So I asked AI, this is the answer, not sure whether it is accurate
View attachment 148138

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Like this:



There is nothing back there at the stern except some bollards and ropes. No machinery. TAS/VDS that are strung out kilometers long will not be affected by the addition of 4m to the stern and can accommodate this increase without issue.

Edit: now that I think about it, even easier would just be to remove all the metal panels at the back end of the ship and then weld a new section to the end of that. You wouldn't even have to cut through the hull at all.

I am wondering if an ASW variant of Z-15 might be a better bet for early 052D (and 054A) than hull inserts, sponsors, etc?

Maikeru said:

I am wondering if an ASW variant of Z-15 might be a better bet for early 052D (and 054A) than hull inserts, sponsors, etc?

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"ASW variant of Z-15" shouldn't be spoken of as if it is an easy or convenient path lol. Not only in terms of the entire program to develop a militarized ASW variant of Z-15 (which is primarily a civil helicopter as it stands), but also in terms of introducing a whole other logistics/support line for such a variant and the complexities that would involve.


If they're desperate for a modern ASW helicopter for initial length helipad 052Ds and 054As and they don't want to add a hull plug in as part of a MLU, they can either just see if there is a way to operate Z-20Fs from 052Ds and 054As in their existing helipad and hangar format (we know that they've had MH-60s land on them in the past, albeit likely with less clearance than desired) or they can just stick with further iterations of Z-9s.

Phantom Chuck said:

you don’t need a plug. You can lengthen the hull by grafting a 4 meter counter to the end of the stern. You may need to adjust the gear for towed sonar or decoys that originally deploys through ports in the old stern.

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If you just add a block to the stern, it will certainly have effect on the propulsive characteristics, may cause vibration and unexpected sound emission patterns. It's not exactly a LEGO.

snake65 said:

If you just add a block to the stern, it will certainly have effect on the propulsive characteristics, may cause vibration and unexpected sound emission patterns. It's not exactly a LEGO.

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It's a problem but it's not unsurmountable. Cutting a ship up and adding a section is something that's been done before. For example there was a cruise liner, forgot the name, that was upgraded by cutting it in half, then added a new section between the portions.

Modern ships are intentionally designed to be a bit Lego like.