Chapter 855 Patent Technology Cooperation
"New medium-range missile..."
Chang Haonan naturally knew that Lin Qing was referring to Haihongqi 16.
That is, it is a model after the technological introduction and upgrade of the 9M38 anti-aircraft missile above the modern level -
It 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 150 kilometers cannot pose any threat to the enemy fleet unless they are in special terrain.
But I am interested in the air defense system it is equipped with.
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, a system with sufficient ammunition, a range beyond visual range, and a single Anti-aircraft missiles that can handle multiple targets are already a proper "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 said just now, it seems that they have already considered replacing new missiles?
Next to me, Lin Qing certainly didn’t know what Chang Haonan was thinking about. She 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 this time. So he stepped forward and explained:
"A few years ago, when we went to negotiate with Russia about the introduction of the Type 956 destroyer, the Northern Design Bureau probably also wanted to refer to your... uh... their aviation industry The cooperation with the Sukhoi Group came up with an upgraded version of the 956U plan, replacing the AK130 naval gun at the back with three sets 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 it would take extra time to perfect. We couldn’t afford to wait, so we didn’t agree in the end and just bought two ships. The 956 was a semi-finished product, and we retained the right to purchase the other two. "
"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, the timetable for the introduction of the 9M38 missile has been advanced. On the other hand, a new hot and cold vertical launch system has been planned. The depth is about 6 meters. 054 has also made a modification to the deck structure of the bow part for this matter. , leaving a total of about 6.5 meters of space on the three decks."
At this point, Lin Qing raised his finger and pointed at the launch boxes of the 3K95s:
"Otherwise it is just for installation. For such a small thing, there is no need to even open the second deck, and it is even possible to move the entire hanging hair to the deck..."
Chang Haonan probably compared the hanging hair in front of him with what he just saw. The frigates were compared.
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 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 lightweight 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, 054 can replace the 3K95 with new vertical hair without touching the hull at all?"
Chang Haonan said in his heart, isn't this ahead of schedule? Have you realized the modular function of warships that Americans still draw on PPT?
However, Lin Qing still shook his head:
“If you want to replace the 054 that has been built, 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 thought about it yet. We will dismantle all 6 sets of 3K95 and keep two sets for short-range point air defense. ..."
Concerning 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. Now that we have the leisure to replace the Russian-made revolver launch system with a launch box, the one above the 052C is affected by the S300F The H/AJK03 vertical hair, which has a huge impact and is obviously not a revolver structure but is still designed as a circular platoon, should also move in a relatively more "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.
Inside 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 very beginning, Hudong Shipyard actually had the idea of loading the Gas-Transport cargo tank separately.
However, if it really comes to this point, it will basically be a lose-lose situation for both Hudong and GTT.
So when it was time to get started, GTT chose to join the project and provide relevant technologies in cargo tank design for the first LNG ship produced by Huaxia.
After all, for GTT, which holds more than 90% of the patents related to membrane cargo tanks, this can be regarded as a supplement and cover 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, you are unlikely to lose.
The ceremony itself was quite brief.
First, the three companies sent people to give speeches respectively. Among them, only Karim Shapo took a little longer because he reviewed the development history of GTT Group and promoted the huge advantages of membrane cargo tanks compared with other technical routes. , the remaining two sides were completed within five minutes.
Immediately afterwards, amid ribbons and cheers, representatives of the three parties signed a cooperation agreement in triplicate.
Then, the three shook hands with each other and drank champagne together.
“Although from a commercial perspective, we at GTT Group are not very optimistic about the prospects of Gas-Transport cargo tanks, we still wish our project to go well.”
Karim· Shabo held the wine glass and clinked it with Wu Wenhao and Chang Haonan respectively:
"Furthermore, from my standpoint as an engineer, it is your first time to come into contact with the complete construction process of an LNG ship, so it is indeed more appropriate to choose a relatively conservative technical route."
"Believe me, Mr. Shabo."
Chang Haonan replied:
"Technology being conservative does not necessarily mean being backward."
"My colleagues have calculated that as long as it evaporates. The efficiency of the gas reliquefaction system is high enough, so the cost of the Gas-Transport cargo tank in terms of size and weight can be compensated, and it will have additional advantages in terms of safety.”
"Well..."
Karim Shapo pondered for a moment, obviously having reservations about Chang Haonan's opinion.
But it was a celebration after all, so he didn’t say it very straightforwardly. He just answered from a technical point of view:
“But I have seen the boil-off gas reliquefaction plan you proposed. It will have an impact on the hull structure, and to truly offset the economic disadvantages of Gas-Transport cargo tanks, a system with a reliquefaction level of at least 85% is required.”
The boil-off gas is LNG during transportation. The main loss, so GTT Company has been conducting research in this area for a long time.
As a core technician, Karim naturally knows these data very well.
But so far, the main idea of GTT is still to play to its own strengths, start from the source, and reduce the amount of leakage as much as possible.
But this kind of thinking has its limits after all.
With the technology of Gas-Transport and Technigaz, it is already difficult to continue to advance.
Therefore, the reliquefaction system will definitely be the next focus of research and development.
This is another reason why GTT chose to join this project in the end - whether the Hudong factory can succeed or not, it can be regarded as a useful attempt.
"No matter what, at least there is a way forward, right?"
Chang Haonan just smiled and did not explain more.
Karim currently only knows that China plans to apply a reliquefaction system on this LNG ship, but he still knows nothing about the equipment status monitoring and automatic fault diagnosis technology provided by Torch Group.
Then... Chang Haonan thought it would be better to let the other party know later.
First, you can give the other party a huge surprise (scare) when the time comes.
Secondly, the relationship between GTT Company and Japanese and Korean companies such as Samsung Offshore Engineering and Oshima Shipbuilding is quite close. Even if Karim had no subjective intention, it would be difficult to keep complete confidentiality from his colleagues.
So it is essential to be on guard against others.
Especially.
According to his experience before his rebirth, Koreans are notorious in this regard.
"That's true..."
Of course Karim didn't know that he was still in the dark, so he just clinked glasses with Chang Haonan again.
Then drink the champagne inside.
(End of this chapter)