Military Heavy

Chapter 71
Kuang Wei obviously noticed Yang Fan's expression, so he asked with concern: "Director Yang, what's wrong, is there something wrong with our design?"

Yang Fan shook his head lightly.

After hesitating for a while, he finally made a decision in his heart. The matter was so important that he couldn't just watch the 052 ship adopt such a hull design and cause insufficient redundancy in future upgrades, and many new equipment could not be replaced.

If you say that I am lenient, let's talk about it, it doesn't matter, Yang Fan thought in his heart.As a shipman, you can't see that there are obvious design problems and not remind everyone.

Yang Fan said seriously: "Director Kuang, I have read your general plan of the hull design. Although it is only a sketch and has not been officially finalized, I think there is an obvious problem in these sketches."

"Oh?"

Kuang Wei looked at Yang Fan in confusion, and said, "Director Yang, please point it out. If there is a problem, we will accept it humbly."

That being the case, Yang Fan didn't hide it, straight to the point, pointed to the power cabin on the design sketch and said, "I think there is a problem here, the cabin capacity is a little too small, and the cabin capacity must be increased."

Kuang Wei took a serious look at the power cabin, especially its main dimensions, and said after a while: "It's not wrong, it won't be small, we can fit two LM2500 gas turbines and two MTU-20 V956 The power compartment designed by the TB92 diesel engine can’t be wrong.”

Here lies the problem, the design of the power cabin has been tailor-made.

This has been the case in history. There is no room for the power cabin. After the United States cut off the supply of LM2500 gas turbines, we wanted to use Ukrainian UGT-25000/DA-80 gas turbines to replace the LM2500 gas turbines, but the cabin capacity was too small. No replacement gas turbines.

If the cabin capacity is designed to be slightly larger at the beginning, it does not need to be much larger, as long as it can accommodate the replacement UGT-25000/DA-80 gas turbine.

The size of the UGT-25000/DA-80 gas turbine is larger than that of the LM2500 gas turbine, and the weight is also several tons heavier.

It's just that there is no UGT-25000/DA-80 gas turbine yet. It needs to be designed and finalized in the 90s, and this gas turbine can only be purchased from Ukraine in the middle and late 90s at the earliest.

Considering that the LM25000 gas turbine will be replaced by the UGT-80/DA-2500 gas turbine in the future, Yang Fan suggested, "Director Kuang, can the power cabin be designed bigger?"

Increase the size of the power cabin and expand the cabin capacity?

Kuang Wei said puzzledly: "It's not necessary. The power system of the 052 ship is very clear. It adopts diesel-fuel combined power, using two LM2500 gas turbines and two MTU-20 V956 TB92 diesel engines as power. We have calculated it many times. After that, the current cabin capacity can completely accommodate two gas turbines and two diesel engines."

Hearing this, Yang Fan felt bitter in his heart.

It is precisely because of this that everyone thinks that the power scheme has been finalized, so a power cabin is tailored for the power system of the 052 ship. There is no redundancy, which makes it impossible to replace the LM25000 gas turbine with the UGT-80/DA-2500 gas turbine in the future. .

How to persuade Kuang Wei?

After thinking for a while, Yang Fan said: "Director Kuang, we need to take a long-term perspective. What if, I mean, what should we do if the Americans stop supplying LM2500 gas turbines in the future?"

Kuang Wei was stunned, and then said: "This should be impossible, even if they really cut off the supply, haven't we already signed a formal contract with General Electric to import 8 sets of LM2500 gas turbines in the first batch, that is, we will have at least 8 a gas turbine."

His meaning is obvious, we will have 8 LM2500 gas turbines, even if the supply is cut off, 8 gas turbines are enough to support for a long time, at least there will be no shortage of gas turbines in the next ten years, as for the longer-term things, who can say for sure Woolen cloth.

Yang Fan felt that he was a little bit too big, and almost wanted to give up, but he couldn't help but know that there was a problem, and watched our 052 ship design such a power cabin, so that it would be impossible to put a replacement gas turbine in the future.

"Director Kuang, what do you think if we increase the capacity of the power cabin, such as adding 1500 mm to the length, 1200 mm to the width, and 600 mm to the height?"

杨帆对UGT-25000/DA-80燃气轮机和LM2500型燃气轮机的尺寸都非常清楚，如果052舰将来能装下两台替代的UGT-25000/DA-80燃气轮机，长、宽必须增加上述这个尺寸数量。

Seeing that Yang Fan didn't seem to be telling a lie, Kuang Wei also said seriously: "The length of the power cabin is increased by 1500mm, the width is increased by 1200mm, and the height is increased by 600mm, so the overall size of our 052 ship will increase. Move your whole body."

Yang Fan nodded, fully understanding this point.

Now that the general hull plan of the 052 ship has been released, although it is only a sketch, the comrades in the general design office must have done a lot of calculations for this sketch. If the power cabin is enlarged and the overall size of the 052 ship is increased, their these Calculations are all in vain.

Kuang Wei thought that Yang Fan didn't understand the serious relationship, and reminded: "The increase in the overall size of the hull will affect more things, such as speed, endurance, maximum range, etc."

Of course, these Yang Fans also know that because these things have to be considered in the design, the hull of the 052 ship should be designed as compact as possible, because the larger the size, the slower the speed under the same power, and the maximum range will also be affected.

Because of this, each cabin is squeezed and squeezed as much as possible, and the pursuit is as small as possible. The equipment of the 052 ship is tens of thousands of units. If the speed and range are not considered, the displacement can be designed at 4000 or [-]. tons, not more than [-] tons.

Yang Fan said slowly: "Of course I know this, but the size we increase is limited, not an exaggeration, and the impact on the speed and range of the ship is still relatively small."

Yang Fan is a person who, once he makes up his mind, can't be pulled back by ten cows. Since he intends to do this, he must persuade Kuang Wei.

Next, Yang Fan talked a lot, such as listing the benefits of expanding the cabin capacity, and even talked about the platformization and modularization of the hull, which is convenient for future upgrades and improvements.

Historically, the 052 ship has been continuously updated, the size of the hull has also been changed again and again, and the size and displacement have also increased and increased.

如舰长也从146米增加到154米，再到155.5米，最后到了157米。标准排水量也从刚开始的4200吨增加到5200吨，再到5900吨，最后到6000吨。

The 052 ship has undergone many major improvements, in which the manpower and material resources consumed are immeasurable, and the time spent is even more impossible to use money.

Of course, this has a lot to do with the weak technical foundation at the beginning, no experience to learn from, everything has to be constantly searched and advanced, so it is helpless to make multiple changes.

But Yang Fan is a time traveler, relying on three to 40 years of foresight than others, to avoid some detours in the development process of the 052 shipboard, which should be what Yang Fan should do.

Convincing Kuang Wei is a must.

Finally, after hearing many things from Yang Fan, Kuang Wei said with emotion: "Director Yang, you really think long-term. Yes, we must consider platformization and modularization to prepare for future upgrades and transformations. Some detours in design."

Yang Fan smiled.

So much saliva was not in vain.

Kuang Wei said: "We will carefully consider your suggestion. At present, we already have a general design of the hull, and we will add another one. Based on this sketch, we will increase the capacity of the power cabin."

Yang Fan felt relieved, "Thank you so much."

The general plan of the hull design of the 052 ship has not been formally finalized. According to the design process, the overall design first, then the partial, and finally the detailed design stage.

There are several schemes in the overall design sketch of the hull, including the design scheme of enlarging the power cabin proposed by Yang Fan just now.

After these plans come out, the general design office will organize a review, and only after the review can the final overall plan of the hull be determined.

After the overall plan of the hull is determined, each cabin is designed, and finally a comprehensive detailed design is carried out. After the detailed design is completed, the overall design work of the 052 ship is completed.

Yang Fan was very satisfied. The overall design office put forward his proposal for review, so he had a chance to pass it, and maybe this proposal would be adopted in the end.

As for Kuang Wei making the decision, it is unrealistic, he is only the director of a design studio, probably at the level of Pan Jinfu.

Maybe Mr. Pan will not make a decision easily, but will also hold a review, brainstorm, and make the final decision after the experts discuss it.

Kuang Wei agreed to adopt Yang Fan's suggestion and would submit it for review in the future. Yang Fan felt much better and chatted with Kuang Wei for about ten minutes before returning to the Combat System Design Institute.

(End of this chapter)