Chapter 855 Patent Technology Cooperation

"New medium-range missile..."

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

That is, the model after the technological introduction and upgrade of the modern-level 9M38 anti-aircraft missile——

It is different from the expectations of many melon-eating 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 150 kilometers cannot pose any threat to the enemy fleet unless they are in special terrain.

Instead, it focuses on the air defense system it carries.

Although the 9K37 air defense system is a mid-to-low-end model in the Red Navy series, for the Chinese Navy from the late 1990s to the early 21st century, an air defense system with sufficient ammunition, a range beyond visual range, and the ability to deal with multiple targets at a time Missiles are already the "mainstay of fleet air defense".

However, if you count the time.

In February this year, the first modern-class ship introduced by China officially returned to China and entered the fleet.

The design plan of 054 had been frozen half a year before that.

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

Of course, Lin Qing next to him didn't know what Chang Haonan was thinking about. He just saw the latter lowering his head and looking confused. Naturally, he thought that as an aviation technology expert, he had never heard of medium-range anti-aircraft missiles, so he took a step forward. explained:

"A few years ago, when we went to negotiate with Russia about the introduction of Type 956 destroyers, the Northern Design Bureau probably also wanted to refer to the cooperation between your... uh... their aviation industry and the Sukhoi Group, and came up with an upgraded version. The 956U plan replaces the AK130 naval gun at the back with three groups of 3S14 vertical launchers.”

“The delegation’s judgment at that time was that the new Russian-made ships might not be reliable, and the plan had to be changed a lot and would require extra time to be perfected. We simply couldn’t afford to wait, so we didn’t agree in the end and just purchased two ships. The 956 is a semi-finished product, and the purchase rights for the other two are reserved.”

"But later we felt that although the warship itself was not very good, the vertically launched 9M38 anti-aircraft missile solution was quite good, so after returning to China, on the one hand, we advanced the timetable for the introduction of the 9M38 missile, and on the other hand, we also began to plan new types of hot and cold missiles. The total depth of the vertical launch system is about 6 meters. For this purpose, the 054 also made a modification to the deck structure of the bow, leaving a total space of about 6.5 meters on the three decks.

Having said this, Lin Qing raised his finger and pointed at the launch boxes of those 3K95s:

"Otherwise, just to install such a small thing, there is no need to open up the second deck, or even move the entire hanging hair to the deck..."

Chang Haonan probably compared the hanging hair in front of him with the frigate he just saw.

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 quite suitable to be installed in the corners of some large ships wherever possible, serving as an ecological niche similar to the future sea sparrow.

That is, it is between a serious 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 a close-range anti-aircraft gun upgrade.

"So... after the new air defense system is finalized, the 054 can replace the 3K95 with new vertical hair without touching the hull at all?"

Chang Haonan thought to himself: Doesn't this realize the modular function of warships that Americans still draw on PPT ahead of schedule?

However, Lin Qing still shook his head:

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

"But if the new ship is upgraded, there is basically no need to go through the design process again."

"It's just that we haven't decided yet. We will dismantle all six groups of 3K95 and keep two groups for short-range point air defense..."

Regarding the matter of hanging hair, Chang Haonan did not ask any more questions.

On the one hand, the vertical hair thing is more important than the specific technical research, but the route selection.

In principle, there is no distinction between high and low haircuts of different types and sizes. As long as they can adapt to the development route of the country's navy's shipborne weapons, it is good.

On the other hand, China's vertical launch system developed relatively smoothly in the last generation, and now that the Russian-made revolver launch system has been replaced by a launch box, the one on the 052C that was greatly affected by the S300F is obviously not The H/AJK03 vertical hair, which has a revolver structure but is still designed with a circular platoon, should also go in a relatively "normal" direction.

In this case, there is no need for him to allocate his already stretched 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.

But these parts are purely routine for welcoming guests.

It's really not very attractive.

Of course Wu Wentao also knows this.

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

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

In the auditorium of Hudong Shipyard.

In addition to representatives of the aerospace power group and the shipbuilding industry, also attending the ceremony was Karim Chapo, a technical representative sent by the French GTT Group.

At the beginning, Hudong Shipyard had actually prepared the idea of ​​loading Gas-Transport tanks on board alone.

However, if it really came to this, it would basically be a lose-lose situation for Hudong and GTT.

So when it was time to get started, GTT chose to join the project and provide relevant technologies for 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 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 the economic efficiency is a little worse, China's own oil and gas company will take over.

Even if it doesn't make money, it is unlikely to lose money.

The ceremony itself was quite brief.

First, the three companies sent people to speak separately. Among them, only Karim Shapo took a little longer because he specifically reviewed the development history of the GTT Group and promoted the huge advantages of membrane tanks compared to other technical routes. The rest of the two sides were done within five minutes.

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

Then, the three shook hands and drank champagne.

"Although from a business perspective, our GTT Group is not very optimistic about the prospects of Gas-Transport cargo tanks, but we still hope that our project will go well."

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

"Moreover, from my standpoint as an engineer, it is indeed more appropriate for you to choose a relatively conservative technical route for your first contact with the complete construction process of LNG ships."

"Believe me, Mr. Shapo."

Chang Haonan replied:

"Technological conservatism does not necessarily mean backwardness."

"My colleagues have calculated that as long as the efficiency of the boil-off gas reliquefaction system is high enough, the cost of the Gas-Transport cargo tank in terms of volume and weight can be compensated, and it will have additional advantages in terms of safety."

"Well..."

Karim Shapo pondered for a moment, obviously with reservations about Chang Haonan's opinion.

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

"But I have seen the boil-off gas reliquefaction scheme you proposed, which will itself have an impact on the hull structure, and in order to truly offset the economic disadvantages of the Gas-Transport cargo tank, at least a system with an 85% reliquefaction level is required."

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

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

But so far, the main idea of ​​GTT is still to play to its own strengths, start from the source, and minimize the leakage as much as possible.

But this idea has its limits after all.

When it comes to the generation of Gas-Transport and Technigaz technology, it is difficult to continue to advance.

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

This is another reason why GTT chose to join this project in the end-whether the Hudong plant can succeed or not, it is a beneficial attempt.

"In any case, at least there is a direction to move forward, isn't it?"

Chang Haonan just smiled and didn't explain more.

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

Then... Chang Haonan thinks that it is better to let the other party know later.

First, it can give the other party a huge surprise (scare) at that time.

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

So it is necessary to be on guard against others.

Especially.

According to his experience before rebirth, Koreans have a bad record in this regard.

"That's true..."

Karim certainly didn't know that he was still kept in the dark, but just clinked glasses with Chang Haonan again.

Then he drank the champagne in it.