"That's right, we can just use a 100mm replica of the French naval gun. Although it is a replica, we have also made improvements and improvements. It will definitely be much better than the prototype gun!"
"Yes, our navy has no other requirements, just firepower. This 100mm naval gun can also carry out shore attacks in the future. I heard that there are also corresponding artillery-launched missiles, and the range can be further improved. The 054 cannot be equipped with a long sword.
Ten, you can also install a few more artillery-launched missiles."
Everyone discussed it for a while and finally decided on this project.
"The project is almost complete." Wu Shengli said: "You come up with a design plan as soon as possible and submit it to the Navy for review. By the way, we can't just have one plan of yours. There must be brother units bidding. You have to do a good job.
Prepare."
Qin Tao nodded: "Okay, we welcome brother units to compete with us."
The Mingzhou Group is now in a state of being overwhelmed, even with the Qiongzhou Third Shipyard. With the collapse of the shipbuilding industry in the South Kimchi Country, they will take on more natural gas ship orders. Their Mingzhou Group
The slipway is still very busy.
In the past, they distributed orders for the 054 frigate to other brother units. Now even if they undertake the modification of the 054, I am afraid they will still have to hand it over to the brother units for production. They will only build a few ships themselves. Therefore, even if there is competition
Don't be afraid either.
"Looking at how confident you are of winning now, in the future, you might really lose the order, so don't cry then." Wu Shengli said with a smile: "Now, someone in the system has already said that you, the Mingzhou Group, are
Duda has lost his enterprising spirit."
"Dad, are you trying to provoke a general? Isn't it too childish?" Qin Tao rolled his eyes at his father-in-law.
"By the way, this frigate must have a new model, right?"
"If we want a new model, wouldn't it be nice to just call it 054B? We have to keep a low profile. If we give it a fancy name, maybe the British will cry."
Everyone laughed.
At this time, Qin Tao still didn’t know the intention of his father-in-law’s words. It was not until a week later, when the bidding meeting for new frigates was officially held in Huanglouli, the capital, that Qin Tao suddenly realized that his father-in-law’s words were
Meaningful!
In addition to the Mingzhou Group, those who came to bid were China Shipbuilding Industry Corporation. The two parties cooperated seamlessly, and even the competition was polite. However, Qin Tao did not know the team that came to bid. They were all in their 20s and 30s.
young people.
"Dear leaders, our China Shipbuilding Industry Corporation 718 Research Institute has designed a brand new ship. We will show it to everyone. Please correct me, especially the leaders of Mingzhou Group." Yang Zhenjun, who was in charge of leading the team, walked up to the stage and looked towards
Everyone: "Now, let's take a look at our overall design drawing."
A CG rendering was printed on the projection screen. The front end of the ship was very pointed, and its layout was no different from that of an ordinary warship. It suddenly widened at the back, creating a huge flight deck. From the looks of it, vertical takeoffs and landings could be made on it.
The J-31A has no problem!
"Trimaran?" Qin Tao was stunned.
"Yes, it is a trimaran. We believe that if warship technology wants to progress, it must take a bold step. When Mingzhou Group started, it also started with a catamaran. We decided to go one step further and build an advanced
trimaran."
Trimarans are not new today. Lao Maozi studied them as early as the 1970s. However, due to the end of the Cold War, countries' military expenditures have continued to decrease, and no country dares to try new things.
It wasn't until 2009 that the U.S. Navy took the first step. They built the USS Independence LCS warship. This warship had a displacement of more than 2,000 tons and a top speed of more than 40 knots. These fierce data were all due to the strength of the hull.
Features bring it, that is the trimaran!
The Americans built the first one, and introduced the second one, the "KRI KLEWANG". This is a 60-meter-long three-body stealth ship that can be turned into a single body. It was launched in 12 years. It is very eye-catching. Unfortunately, it was launched.
It caught on fire within a month and was burned into rubbish. However, the reputation of the trimaran was also spread. Countries began to study this kind of trimaran, especially at various defense exhibitions. Trimaran shapes emerged in endlessly.
However, most of them are PPT and no country’s navy actually uses them.
Qin Tao has always had the inertia of his thinking, and just build it according to the original 054B. He only showed the trimaran on the show Zhang Zhong said, but it was a lie and he never intended to build it.
If colleagues want to defeat the Mingzhou Group, they can only use strange tactics.
As a result, Institute 718 created this monster. Of course, this is also because young technicians have entered the workplace and are more open-minded.
"Everyone has seen that the biggest advantage of our trimaran is the large deck area. The trimaran stealth frigate we are currently designing has a length of 162 meters, a width of 38 meters, and a full load displacement of 4,500 tons."
38 meters!
The 10,000-ton large-scale drive 055 is only about 20 meters wide. The width of a warship of more than 4,000 tons can reach 38 meters. This is the advantage brought by the trimaran!
How many helicopters can be accommodated in such a wide space? It is more than enough to serve as a helicopter carrier!
"As for the power system, we plan to still use the four previous sturdy and durable diesel engines, which can allow the top speed to exceed 30 knots."
If the original diesel engine is still used, if it is still a monohull, the top speed is only 25 knots, but if it is replaced with a trimaran, the speed can be increased to 30 knots!
Why?
Of course it’s because of the low resistance!
In the movies from the Sino-Japanese War of 1898-1894, those warships were all slender. Only in this way can they achieve high enough speeds. Now, the aspect ratio of warships is less than 10. The main engines are powerful, which can offset the resistance, and at the same time provide sailors with
A more comfortable space.
This chapter is not over yet, please click on the next page to continue reading! If you look at the data alone, the length-to-width ratio of the trimaran frigate has reached the level of 5. It seems that the resistance is greater, but in fact, you can see it just by looking at it.
, there are not many parts that go deep into the water, and they are all long and slender!
The main hull in the middle has an aspect ratio of more than 12, and generally reaches the level of 14!
This kind of slender hull has relatively low wave resistance, but serious rolling will occur during navigation. If there is only the middle hull, it will definitely not be stable, and whoever sits on it will get seasick.
However, if you add the pieces on both sides, it will be different.
The pieces on both sides are inserted into the water, making the boat as stable as a dog. Due to the low resistance, it can sail as fast as lightning!
In short, the trimaran is a ship type with great potential!
If you want to defeat the Mingzhou Group and win the bid, you have to use a trimaran!
Yang Zhenjun said these words, then raised his head and glanced at the podium. Sure enough, the people above were looking at him with interest, so he became more confident.
"We know that when a ship is sailing, it is divided into six different vibration states, namely heaving, pitching, heaving, rolling, pitching, and heaving. The trimaran we designed can greatly
It can greatly improve the stability of navigation and reduce the occurrence of various shocks. On a ship like ours, even if it is a surgical operation, there will be no problem."
"How does it compare to a catamaran?" a leader asked.
The Navy does not have a trimaran, but it has a large number of 022 catamaran missile boats, so now, leaders will compare catamarans and trimarans.
"Compared with catamarans, our trimaran will be more stable. Although the catamaran is very stable, it has new problems of twisting and jerking. This is caused by the characteristics of the catamaran's ship type.
The trimaran will not have this problem. It is the most advanced ship type and will definitely be used on a large number of ships in the future!"
The catamaran is wider laterally, so the roll of the ship will be greatly reduced. After all, the damping is very large. However, when sailing, the stress on the two hulls will not be exactly the same. As a result, the movement of the ship will be more complicated, which makes people unable to complain.
The problem of "twisting" and "sudden rolling". Under certain sea conditions, catamarans are even more prone to seasickness than monohulls.
Therefore, a catamaran ship can be used to build a missile boat, and there is no larger warship, but a trimaran ship is much more stable. The littoral combat ship built by the United States in later generations is enough to prove that the stability of this trimaran ship is not in vain.
Yang Zhenjun and others believe that they can lead the new shipbuilding trend, just like what Mingzhou Group once did.
Qin Tao was below, listening with interest all the time, with approval in his eyes.
"Wait a minute, is there something missing on this warship?" At this moment, a leader said: "This is not a nuclear-powered warship. Why can't you see the chimney?"
Yang Zhenjun smiled: "Dear leaders, this is another feature we want to introduce to you. Our trimaran uses side exhaust, which eliminates the need for a chimney, and the infrared and optical characteristics will also be greatly reduced.
"
Side exhaust is nothing new. For example, aircraft carriers and nuclear-powered aircraft carriers will also emit smoke, and it comes out from the side, which comes out after the auxiliary engines are ignited. Over time, the sides will be blackened.
.
But for ordinary single-body warships, chimneys are necessary. Of course, chimneys have also undergone a series of evolutions.
Back then, when ship power entered the steam engine era, chimneys for burning coal began to be erected. The higher the chimney, the better the exhaust efficiency, so it is very interesting to see ships with tall chimneys on top.
Then, there is the competition of multiple chimneys. These things are just like the exhaust pipes of cars. The more they are, the more powerful they are. The famous Titanic had four chimneys. Although some ships do not need so many, they still have to.
Install a few fake chimneys for show.
On the battlefield, fake chimneys can even confuse the enemy. For example, in October 1914, the cruiser "Emden" of the German East Asia Fleet made a fake chimney out of canvas and wooden frames, pretending to be the British cruiser Yarmouth, and showed off with great arrogance.
He drove to the side of Lao Maozi's cruiser "Pearl" and fired a torpedo to send Lao Maozi to the bottom of the sea.
As for the first people to use side-side discharge, it was the islanders. During World War II, they built many aircraft carriers, but found that the black smoke from the chimneys would interfere with the take-off and landing of carrier-based aircraft, so they used the Fengxiang aircraft carrier
It was equipped with three short chimneys that could be tilted outboard. Later, the Akagi, Kaga, Shokaku-class aircraft carriers were equipped with large chimneys that exhaust air from the starboard side to the side and rear. It can be regarded as a unique feature of the island nation's aircraft carriers.
son.
However, side exhausts are easily flooded by seawater when sea conditions are bad, so they have not become popular.
In modern times, with the use of gas turbines, a large amount of air is required for intake and exhaust, so you can see that there may be several chimneys on a warship, but generally they are kept as close as possible so as not to interfere with other layouts. Moreover,
You can also see a square arrangement outside the round chimney, with many openings on it, which are the air inlets.
The gas turbine requires a lot of air intake, and the air inlet is very large, and the space around the chimney is also unused, so it can be used like this, and the air sucked in can just cool the hot air in the chimney, which can reduce infrared
feature.
Of course, sometimes this is not enough, then water is forced inside to cool down. This is almost always the case with modern chimneys.
As for the diesel engine, the exhaust pressure is high. You can use an upright chimney or exhaust on the side. The exhaust port of the Saar 5 light stealth frigate of the Kingdom of David is near the waterline on the side. As for the catamaran, it can even be used.
Directly inside, let alone a trimaran, the main engine is placed on the central hull and exhausts directly to both sides. The exhaust gas is blocked by the two sides, making it difficult to detect it with infrared and optical methods.
The absence of a chimney means there is more space on the deck for other equipment.
"As for the weapon system, we still plan to follow the original layout, with a 76mm naval gun in front, followed by a 32-unit vertical launcher, the bridge, two quadruple anti-ship missile launchers behind, and then
Hangar." Yang Zhenjun finished the brief introduction, then looked at the rostrum: "Dear leaders, I will stop here for now. If you don't have any questions, I will leave the time to Mingzhou Group. After all, we are just making soy sauce.
of."
Every time you bid with the Mingzhou Group, you will always say that you are here to make soy sauce. This is like the parents of the students who ranked first in the overall exam. They always say that my children are ordinary and so on. Although they are modest, they are full of pride.
.
Yang Zhenjun knows that leaders must have many questions to ask.
"Wait a minute, Mr. Yang, your deck at the back is so big and the hangar is not small. How many carrier-based aircraft can it accommodate?"
"Our current most advanced Z-20 can park three aircraft. If it is a J-31A, it can park one aircraft. However, the requirements for takeoff and landing are very high." Yang Zhenjun said.
Taking off and landing are not their responsibility, that is something that aircraft builders should consider. At least they have provided enough spacious space, and the J-31A will have no problem landing if it wants to.
"Three aircraft. If this is an anti-submarine mission, it will be a huge advantage!"
"Yes, when needed, it can also carry the J-31A. That's awesome."
Everyone was filled with emotion.
"Under the premise of the same displacement, the resistance is small, the speed is high, and the deck area is large." Wu Shengli concluded above: "Stability, seaworthiness, self-sustainability, and anti-attack capabilities are all far ahead. Mr. Qin, what do you think?
"
Yang Zhenjun did not introduce the anti-attack capability. This is also obvious. If a missile comes, it will be blocked by the outer body, and the main engine inside should be well protected and will not be affected. Generally speaking, the performance of this kind of warship is advanced.
There is no doubt about it.
In the past, Wu Shengli would quietly reveal the bidding unit's projects to Qin Tao and let him prepare. But now, the Mingzhou Group is so powerful, and it is good to be hit occasionally. Wu Shengli's eyes are meaningful,
Look at Qin Tao.
"Yes, these are all advantages, but there are also many disadvantages of the trimaran. For example, although the deck area is large, the internal space is not high. Leaders, our 054 improvement plan is all about improving the internal space.
, to improve the self-sustainability and comfort of ocean voyages, do you all still remember?"
Under the premise of the same displacement, the use space of the trimaran is small!
Looking at the design drawing, many leaders were a little disapproving because it looked so big!
"The lower part of the trimaran is three slender hulls. The two sides are too narrow, so we won't talk about it. The length-to-width ratio of the middle hull is also about 14:1, and its length is 160
The maximum width of the hull in the middle is only a dozen meters. Note that this is still the largest area. In fact, the internal space is very narrow. Only the main engine, ballast water tank and fuel tank can be arranged. There is no way to arrange the crew's life.
cabin."
Yang Zhenjun opened his eyes wide. Mr. Qin was really powerful. He did not introduce these in detail. Unexpectedly, Mr. Qin could see it at a glance! Mr. Qin once introduced this kind of trimaran on the Zhang Zhongshuo program. Now it seems,
There are mostly elements of deception.
"In this way, the crew can only live in the upper space, but radar and other equipment must be placed on it. Therefore, the most suitable upper floor layout of the trimaran is to make it the same as the DDG-1000 in the United States. From the outside
The place where the two pieces are parallel is used as the superstructure, so as to create a living space for more than 100 people to eat, drink and relax. With this design, there are not many superstructures in the first place. You also compressed the space behind to expand the deck.
Due to its size, I think it’s only suitable for about fifty people for ocean sailing.”
Don’t forget the original intention! The original intention to upgrade the 054 was to improve comfort and adapt to ocean navigation. Although the trimaran has many advantages, the usable space is not as large as that of a single-hull warship of the same displacement! Because below the waterline
Part of it is almost impossible to use effectively!
Wu Shengli looked at Yang Zhenjun: "Gong Yang, is Mr. Qin right?"
"It's like this. We plan to use the most advanced electronic technology to greatly reduce the number of crew members required. We have designed a living space for about seventy people. It is relatively compact inside and most of them are three-person berths." After Yang Zhenjun finished speaking, he took a look.
Qin Tao.
"Mr. Qin, you are really amazing. You can see the flaws of warships like ours at a glance. I, Yang Zhen, am in uniform!"
The Mingzhou Group has been able to survive to this day, and they have real skills! Their research on warships is even more thorough than ours!