Chapter 855 Patent Technology Cooperation

"New medium-range missiles..."

Chang Haonan naturally knew that Lin Qing was referring to Haihongqi 16.

That is, the model after the technical introduction and upgrading of the 9M38 air defense missile on the modern class.

This is different from the expectations of many people at this time.

China's introduction of the 956 destroyer is not, or at least not primarily, for anti-ship capabilities.

Eight anti-ship missiles with a range of less than 8 kilometers cannot pose any threat to the enemy fleet unless in special terrain.

Instead, they were attracted by the air defense system it carries.

Although the 9K37 air defense system is a low-end model in the Red Navy sequence, for the Chinese Navy from the late 90s to the early 21st century, an air defense missile with sufficient ammunition, a range beyond visual range, and the ability to deal with multiple targets at a time has become a veritable "fleet air defense pillar."

However, if you calculate the time.

In February of this year, the first Sovremenny-class ship introduced by China was officially returned to China and commissioned.

The design of 054 should have been frozen half a year before that.

But from what the other party said just now, it seems that they have already considered replacing new missiles?

Lin Qing, who was standing by, certainly didn't know what Chang Haonan was thinking about. He just saw him looking down with a puzzled look on his face. He naturally thought that as an aviation technology expert, he had never heard of medium-range air defense missiles, so he stepped forward and explained:

“前些年我们去跟俄方洽谈引进956型驱逐舰的时候，北方设计局估计是也想参考一下你们……呃……他们航空工业和苏霍伊集团达成的合作，拿出来了一个升级版的956U方案，把后面的那门AK130舰炮给换成了3组3S14垂发。”

"The delegation judged that the new Russian-made ship might not be very reliable, and the plan required a lot of changes and would take extra time to perfect. We simply couldn't wait, so we didn't agree in the end. We only bought two semi-finished 956s and reserved the right to buy the other two."

"But later we thought that although the warship itself was not good, the vertical launch 9M38 air defense missile solution was quite good. So after returning to China, we advanced the timetable for the introduction of 9M38 missiles, and on the other hand, we began to plan a new type of cold and hot co-mounted vertical launch system with a depth of about 6 meters. The 054 also modified the deck structure of the bow part for this purpose, leaving a total of about 3 meters of space on three decks."

At this point, Lin Qing raised his hand and pointed at the 3K95 launch boxes:

"Otherwise, just to install such a small thing, there is no need to open up the second deck. It would even be fine to move the entire vertical launch onto the deck..."

Chang Haonan roughly compared the hanging hair in front of him with the frigate he had just seen.

It was found that the size of 3K95 can indeed penetrate only the first deck without affecting the space inside the ship below.

It is very suitable to be installed in the corners of some large ships, serving as an ecological niche similar to the future vertical-launch sea sparrow.

That is, it is between a proper medium-range air defense missile and a single-channel light air defense missile that can only be used for terminal close defense and is essentially equivalent to an upgraded close-in defense gun.

"So... after the new air defense system is finalized, the Type 054 can replace the 3K95 with the new vertical launch system without having to touch the hull at all?"

Chang Haonan thought to himself, doesn't this mean that the modular function of warships that the Americans had drawn on the PPT was realized in advance?

But Lin Qing still shook his head:

"If you want to replace the already built 054, you still have to move it around, at least remove the counterweight left underneath."

“But if a new ship is upgraded, there is basically no need to go through the design process all over again.”

"But we haven't decided yet. We're going to dismantle all six 6K3s and keep two for short-range air defense..."

Chang Haonan did not ask any more questions about the vertical hair.

On the one hand, when it comes to vertical launch, compared to the specific technical challenges, the more important thing is the route selection.

In principle, there is no distinction between different types and sizes of vertical launch systems. As long as they can adapt to the development path of their own naval shipborne weapons, they are good.

On the other hand, China's vertical launch system developed relatively smoothly in the previous life. Now that China has the leisure to replace the Russian-made revolver launch system with a launch box, the H/AJK052 vertical launch on the 300C, which is greatly influenced by the S03F and is obviously not a revolver structure but is still designed with a ring-shaped row, should also move in a relatively more "normal" direction.

In this case, there is no need for him to allocate his already limited time and energy to this.

……

After visiting the frigate, Wu Wentao took Chang Haonan and his party to visit other areas of the Hudong Shipyard and the factory history museum.

However, these parts are purely routine procedures for welcoming guests.

The attraction is really not great.

Of course Wu Wentao is also aware of this.

So after going through the motions, Chang Haonan and the others were sent back to their residence in the name of "arranging for them to rest."

The signing ceremony was arranged together with the dinner the next day.

Inside the auditorium of Hudong Shipyard.

In addition to representatives from the Aero Engine Group and the Shipbuilding Industry, Karim Chabo, a technical representative from the French GTT Group, also attended the ceremony.

At the very beginning, Hudong Shipyard had actually already planned to load the Gas-Transport liquid cargo tanks separately.

However, if it really comes to this, it will be a lose-lose situation for Hudong and GTT.

So when the time came to get started, GTT chose to join the project and provide relevant technologies in liquid cargo tank design for the first LNG ship produced by China.

After all, for GTT, which holds more than 90% of the patents related to membrane liquid cargo tanks, this can be regarded as a supplement and backup for the more radical Technigaz technology.

Anyway, everyone knows that as long as this ship can be built, even if it is less economical, China's own oil and gas company will take over.

Even if you don't make a profit, it's unlikely to lose money.

The ceremony itself was fairly brief.

First, representatives from the three companies made speeches respectively. Among them, only Karim Shabo took a little longer because he reviewed the development history of the GTT Group and promoted the great advantages of membrane liquid cargo tanks compared with other technical routes. The other two sides finished within five minutes.

Immediately afterwards, amidst streamers and cheers, representatives of the three parties signed the cooperation agreement in triplicate.

Then, the three of them shook hands and drank champagne together.

“Although from a commercial perspective, we at GTT Group are not very optimistic about the prospects of Gas-Transport tanks, we still hope that our project will go well.”

Karim Shapo held up his glass and clinked it with Wu Wenhao and Chang Haonan respectively:

"Moreover, from my perspective as an engineer, since this is your first time to experience the complete construction process of an LNG ship, it is indeed more appropriate to choose a relatively conservative technical route."

"Trust me, Mr. Shapo."

Chang Haonan replied:

“Being conservative in technology does not necessarily mean being backward.”

“My colleagues have calculated that if the boil-off gas reliquefaction system is efficient enough, the cost of the Gas-Transport tank in terms of volume and weight can be offset, and it will have additional advantages in terms of safety.”

"Um……"

Karim Shabo pondered for a moment, obviously having reservations about Chang Haonan's opinion.

However, since it was a celebratory occasion after all, he did not say it very directly, but only answered from a technical perspective:

“But I have read your proposed boil-off gas reliquefaction solution, which will itself have an impact on the hull structure. In addition, to truly offset the economic disadvantages of the Gas-Transport cargo tank, a system with a reliquefaction level of at least 85% is required.”

Boil-off gas is the main loss of LNG during transportation, so GTT has been conducting research in this area for a long time.

As a core technical personnel, Karim is naturally familiar with these data.

However, up to now, GTT’s main idea is still to give full play to its own strengths, start from the source, and reduce the leakage as much as possible.

But this kind of thinking has its limits after all.

By the time of the Gas-Transport and Technigaz generation of technology, it was already difficult to move forward.

Therefore, the reliquefaction system will definitely be the next research and development focus.

This is another reason why GTT finally chose to join this project - regardless of whether the Hudong factory can succeed, it is a beneficial attempt.

"At least there's a direction to move forward, right?"

Chang Haonan just smiled and didn't explain any further.

Karim currently only knows that Huaxia plans to use a reliquefaction system on this LNG ship, but still knows nothing about the equipment status monitoring and automatic fault diagnosis technology provided by Torch Group.

Well... Chang Haonan thought, it would be better to let the other party know later.

Firstly, you can give the other person a huge surprise (scare).

Secondly, the relationship between GTT and Japanese and Korean companies such as Samsung Marine and Oshima Shipbuilding is quite close. Even if Karim has no subjective intention, it is difficult to keep it completely secret from his colleagues.

Therefore, we must always be on guard against others.

especially.

Based on his experience before his rebirth, Koreans have a terrible record in this regard.

"That's true..."

Of course Karim didn't know that he was still kept in the dark, and he just clinked his glasses with Chang Haonan again.

Then drink up the champagne in it.