Great warships

Chapter 982 A [-]-ton super aircraft carrier
"Mr. Qin, if our price is too high, will they run away?" Xu Zhengyang was a little worried.

It’s just a generator, and the cost is only about 200 million. The price of the Mingzhou Group’s internal supporting equipment is only 400 million. If it is sold to external parties, 1000 million is already very profitable. Mr. Qin actually quoted 3000 million. He is not a fool, isn’t he? Will you develop it yourself?Why use Mingzhou Group?
"If they don't use our generator, they can only use the generator developed by Alstom Mechanical and Electrical Department for the British Queen-class aircraft carrier." Qin Tao said: "The rated speed of the MT30 power turbine used by the Queen-class aircraft carrier is set to 3600 revolutions per minute, which can meet the goal of directly emitting alternating current with a frequency of 60 Hz from the alternator. As for our UGT40000, the power turbine output speed is more than 5000 revolutions. How can they use the generator of the Queen-class aircraft carrier?"

Qin Tao is very confident: "If they develop their own specialized generators, the research and development cost will probably be 8000 million. Our two generators only cost 6000 million. They are absolutely reliable."

The East uses twelve-phase generators, which then become medium-voltage DC, while the West uses medium-voltage AC. After starting, their generators must have some fixed speed values, otherwise they cannot be connected to the grid to generate electricity. .

The speed of our two gas turbines does not meet the needs.

"What about their own research on reducers?" Xu Zhengyang continued to ask.

Different speeds can be achieved through reducers.

"Reducer?" Qin Tao smiled: "Their power grid has so many generators, and grid connection is definitely a big problem. With our gas turbine, if we add reduction gears, it will be even more difficult to connect to the grid." It’s not easy to adjust. They have no choice. They have fallen into our trap since they started purchasing our gas turbines.”

Zhao Ling on the side said: "Yes, after they buy our generator, they will have to purchase our inverter."

Our own is a twelve-phase generator, and the alternating current generated will be directly converted into direct current through the rectifier. For domestic warships, it is enough to convert it into direct current, because it uses medium voltage direct current, which is very convenient to form a power grid. The step of grid synchronization is omitted.

However, the medium-voltage AC in the West does not work. When they bought the generator, they found that they still could not connect to the grid, so they had to continue purchasing inverters.

It is easy to convert alternating current into direct current. You only need to use high-power silicon rectifier diodes. Through the unidirectional conductivity of this electronic device, alternating current can be converted into direct current, but it is not easy to convert direct current into alternating current.

This requires the participation of advanced high-power semiconductor components, such as IGBT and MOSFET, etc. In this field, Dongfang is the boss!

Why don’t the West use medium-voltage DC instead of AC?It is because the power grid in the West is quite backward. Yes, in recent years, the infrastructure work in the West has almost been at a standstill without any progress, and the power supply system in the West has not developed much either.

In contrast, the East is making great strides.

There is a lot of energy in the east, but it is all in the west, and the main users are in the east. Therefore, the power from the west needs to be transported over. If AC power is used, there will be impedance, capacitive reactance and inductive reactance, but If direct current is used, there are only impedance and capacitive reactance, and inductive reactance is only produced by alternating current.

Specifically, if alternating current is used for transmission, one-fifth of one kilowatt hour of electricity may be wasted in the transmission process. If direct current is used, only one-tenth may be wasted. What is saved is what is earned. Therefore, Dongfang has always Studying how to reduce transmission losses.

Dongfang has high-power transformer equipment, which converts alternating current into direct current at one end of the generator, and then converts direct current into alternating current at the user's end. After all, the user's end still needs to be connected to the grid for power supply.

In this way, Dongfang has studied a large number of such equipment and accumulated rich experience.

These experiences were used on the aircraft carrier, and the aircraft carrier's integrated electric power, electromagnetic ejection, and electromagnetic interception were soon matured.These experiences were used in electric vehicles, and the technology quickly achieved breakthroughs.

Yes, electric vehicles also benefit. After all, batteries use DC power, but motors require AC. Only AC motors do not need brushes. This will cause early wear and tear, and the sparks generated may also pose a fire hazard.

This is the hard power of the East.

Now, Qin Tao has full confidence that even if he kills the French, the French have no other choice but to accept the killing obediently.

Xu Zhengyang did not continue to raise objections. Mr. Qin had already made arrangements, so he didn't have to worry about it.

"Mr. Qin, there is a new situation." Zhao Ling said.

"Say."

"We have contacted Guinea, and they insist on coming. They would rather come seven days in advance and stay in a hotel for seven days."

"Okay, then let them come." Qin Tao nodded: "This is Africa's first super warship with a displacement of [-] tons. We can understand their mood."

In Africa, there are hundreds of tons of missile boats that can dominate, not to mention thousands of tons of frigates and destroyers. Now, for the first time, the African navy has a [-]-ton aircraft carrier. This is definitely a huge leap. From now on, the Guinean Navy can walk sideways in Africa. This guy Americo has always been ambitious. How could he give up such a good opportunity? He must come in person to participate in the launching ceremony of this warship.

How can watching it on the Internet have the same feeling as being there in person?

Just come, it's just seven more days of food money.

"Also, the relevant leaders of the Navy can no longer wait and decided to invite us to the capital for a meeting. They hope that we will wear masks throughout the whole process and take a special plane and car there."

Thinking about it, the Navy has been waiting for the aircraft carrier project for a long time, but because of the masks, it has to wait for an extra six months. They must be suffering enough.

"Okay, then let's go to Huating first, pick up the staff from the Second Design Office, and go to the capital together to report the specific project to the leaders. As long as the project is approved, we can start construction on 075 immediately after 003 is launched. The dock can continue Use it.”

"Ah."

The capital seems to have been shut down for a while and has not recovered yet. There are no people on the streets, only people wearing isolation suits doing various jobs. Looking at these scenes, Qin Tao seems to have returned to Before traveling by yourself.

No difficulty can stop our motherland and people!
In the Huanglou conference room, everyone was wearing masks. They looked very unique, and their voices also changed a bit.

"Our meeting should have been held a month or two ago, but there is no way. It has been postponed until now." Wu Shengli said: "We can't delay it any longer. We need to start construction as soon as possible. I heard that Mingzhou Group's shipyard will soon be will be freed up, so we hope that after the last one is launched, the construction of our 003 aircraft carrier can start. The relevant funds have been approved by superiors and will soon be allocated to the Mingzhou Group's account. Our current best The important thing is to review the design.”

"Yes, our Mingzhou Group is also looking forward to passing the approval plan and then starting construction." Qin Tao said: "Now, please let our Mr. Mao Gengxin introduce our design plan to everyone."

Babbage walked up to the rostrum with vigorous steps, stood at the side where he was speaking, and connected his notebook to the projector screen.

"Let's first introduce the main parameters of our 003 aircraft carrier. Its length is 338 meters, its width is 81 meters, its standard displacement is [-] tons, and its full load displacement is [-] tons."

Although they were always talking about [-] tons, [-] tons, there was no regulation on the displacement. Now that they are all nuclear-powered, of course they cannot be small in size, and they have to be aimed at the latest aircraft carrier of the US military.

002 is already 003 tons, and [-] will of course transition to [-] tons.

"With a full load of [-] tons? Is our power system sufficient?" Navy leaders first thought of this question.

"Our Linglong No. 700 nuclear reactor has a core power of 120 megawatts and a power generation of 240 megawatts. In this way, the main engine alone can provide [-] megawatts of power supply." Babbage continued to introduce, although these data were not updated in the previous meeting. Qin Tao had already said it before, but after all, this was the last and most important decision-making meeting, and some leaders still didn't know.

"At the same time, we also plan to use two 160-megawatt gas turbines as auxiliary engines. When needed, we can add an additional [-]-megawatt power supply. There will be no problem in propelling a [-]-ton warship with this power. After all, Our tail drive motor is [-] megawatts, and four of them only require [-] megawatts of power."

"Have you decided to use all-electric propulsion?"

These are topics that I have been hesitating about for a long time, but now I can finally make a decision.

"Yes, our nuclear reactors and steam turbines will be installed at the rear of the warship. If the defects of all-electric drive are exposed during sea trials, we will also change to a transmission shaft, and the cost will be borne by our Mingzhou Group. It won’t cost the Navy a penny more.”

Since such a commitment has been made, of course, there is enough confidence. These systems have long been mature. The Navy should not be conservative and make strides forward.

160 megawatts of power can already propel the aircraft carrier to a speed of thirty knots. The remaining power is of course used to power other systems, especially electromagnetic catapults, which are large power consumers.

"You also added two [-]-megawatt gas turbines. Isn't this too much?"

Do you need so much power?The British Queen class, which is [-] tons, only uses two [-]-megawatt gas turbines.

"We have considered future development and backup." Babbage said: "If there is a problem with the nuclear power system, these two gas turbines can also allow the warship to return at low speed instead of lying down." This is the same as Lao Maozi, even if Even with nuclear reactors, we still have to burn boilers, just in case the nuclear reactor doesn't work, we can still rely on burning boilers to move forward.In fact, Lao Maozi's worries are justified. In the 90s, a Kirov-class ship had a nuclear reactor problem and ended up relying on a boiler to get home.

As for yourself?That kind of accident should not happen. These two gas turbines are only used to temporarily provide power. After all, if projects such as electromagnetic guns are installed in the future, power consumption will definitely soar.

"In order to better utilize the energy on the aircraft carrier, these two gas turbines will use aviation kerosene."

Ordinary battleship gas turbines use diesel, which is cheap after all. When the diesel fuel is alternated, it can share the same fuel with the diesel engine, but the aircraft carrier is different.

The aircraft carrier that burns the boiler uses heavy oil. The nuclear-powered aircraft carrier does not need to burn fuel. The aircraft carrier only needs to store aviation fuel. Although there are some vehicles on the aircraft carrier that burn diesel, such as deck tractors, etc., the diesel fuel tank on the aircraft carrier is very small. It is too small to be used by the gas turbine, and it will be sucked out in a few minutes.

However, aircraft carriers need to operate a large number of carrier-based aircraft and require a large amount of aviation kerosene as fuel. Generally speaking, as long as one-third is burned, it must be replenished to avoid the problem of shortage. Therefore, using gas turbines on aircraft carriers, It is more suitable to burn aviation kerosene. Even if it goes tens of thousands of miles, it can still be driven back.

Of course, if an aircraft carrier relies only on gas turbines for power, it will still need to add an additional diesel tank. After all, aviation fuel only needs to be burned once in a while. If it is burned frequently, even the big dogs cannot afford it.

Occasionally when you need intensive ejection, open it and then it will be an emergency.

"Does such a large power host need a special chimney?"

The chimney of an aircraft carrier also occupies a large deck area. We have already built a nuclear-powered aircraft carrier with the intention of saving money. But now that it is nuclear-powered, we actually have to erect a large chimney. What are we trying to do?
"No, our gas turbine is placed slightly higher and is directly discharged from the side."

Some auxiliary engines used by aircraft carriers can have side exhaust. Now, it is definitely not mainstream to use two gas turbines with side exhaust. If they are used every day, this will definitely not work. Only auxiliary engines that are used occasionally can do this. arrange.

Two [-]-megawatt gas turbines are used as auxiliary engines and are only used occasionally. If this news gets out, I don’t know what others will think, especially the French.

The experts present discussed for a while, and then nodded: "Okay, this plan is acceptable."

"Then let's move on to the layout. According to the Navy's choice, there is a center-mounted island, four catapults, and three side elevators. Let's look at the deck layout."

For these layouts, there was a long debate in the Second Design Department, but no decision was made. In the end, we could only ask Qin Tao. Qin Tao cut the mess quickly and solved it directly: ask the navy.

Whatever the navy wants, we will design it.

Difficulty choosing?Then leave it to others to choose.

The Navy didn't know how long they debated it before finally making this choice.

Except for the Ford-class aircraft carriers in the United States that use rear-mounted islands, we have not seen any aircraft carrier do this. And the Ford-class aircraft carriers are not yet available. There is no precedent. Therefore, the navy has no choice. The center-mounted island is the most reliable. .

As for the catapults, after considering the quotation of the catapults, the Navy resolutely chose four units. One more unit would provide a backup insurance.

In terms of elevators, since the displacement has further increased, it should be expanded to three elevators, so that it will be more convenient to transport fighters.

At this time, the deck layout was printed on the projection screen.

"Let's take a look first. Since our deck is 81 meters wide, our deck layout is more scientific. For example, the flame deflector of our No. 2 ejection will not interfere with the landing area, and it will not interfere with takeoff and landing. any hindrance.”

In fact, on No. 002, the No. [-] catapult takeoff point at the bow of the ship will not invade the landing area, but it is almost adjacent to it. This way, if a landed aircraft does not hook the blocking request and wants to go around, and there is also a left The influence of cross wind is likely to collide with this flame deflector.

Once we get to the aircraft carrier in front of us, there will be no problems.

"At the same time, on the angled deck, the No. [-] catapult at the edge will not interfere with the landing area at all. Only the No. [-] catapult is within the landing area."

The No. [-] catapult is next to the port side of the deck, and the take-off point is also extended to the left, so it will not have any impact on the ship area at all.

Only the additional catapult is destined to be inside the landing zone. Whether it is useless or not can only be concluded after the Navy's operation.

"The area of ​​the entire deck has increased to 20127 square meters. According to the normal layout, it can carry twenty J-32s, twenty J-600s, plus two KJ-44s and two helicopters. The ships on the deck can operate normally. The number of carrier aircraft reaches 32, and if all are equipped with J-[-]s, the number will be even more."

The Yankees' USS Ford aircraft carrier has a deck area of ​​19827 square meters. The deck can normally operate 44 carrier-based aircraft of the size of the Super Hornet. Our own deck is larger, and of course it can accommodate more carrier-based aircraft. Normal operations can achieve this. 44, of which twenty are heavy-duty aircraft. This efficiency is already quite high. Coupled with the hangar below, such an aircraft carrier can normally operate more than eighty carrier-based aircraft.If you want to show off your muscles, you can also carry hundreds of them.

"Yes, the design of this deck is okay. The larger the displacement of this aircraft carrier, the easier it will be to operate." The leaders present looked at the layout of the carrier-based aircraft and were very satisfied.

"Okay, let's move on to the ship island. In order to free up more area for the deck, our ship island has been further reduced and developed to a higher place. On the ship island, we will use the technology pre-developed on the 055 destroyer , fully equipped with phased array antennas, the ship island has a smooth appearance and no other antennas will be visible.”

Over the years, Dongfang's electronic technology has developed rapidly, and it can finally provide the navy with such advanced equipment. All of them are shields, which look very grand.

The slide continued to switch, and the ship island appeared.

The area of ​​this ship island is only half of the previous 002 ship island!The previous ship islands were all in the shape of a long strip. This ship island looks almost square, smaller and more refined. This layout also frees up a huge deck area, which can accommodate at least two more carrier-based aircraft. !
The lower layers have the same cross-section, and then the middle and upper parts begin to protrude outwards, which are the aviation and navigation bridges. Some of them are like big-headed dolls, small at the bottom and large at the top. However, this layout also has many advantages, such as It can reduce the floor space and leave enough space for the aviation and navigation bridges.

Further up is the main radar.

This top also has a square cross-section, but it is turned 45 degrees, and the four main radar antennas are arranged on the sides of the square. Just look at this flat plate without protrusions, and you will know that it is the liquid-cooled 346A or even the more advanced 346B.

On top of it, there is also a tower mast with some formations attached to it.

"The top of the bridge belongs to the main radar." Babbage continued to introduce: "These radar arrays cover different bands and have different uses. For example, the four blocks below are the main phased array radars of the S-band. I will give you the specific parameters. Not to mention, everyone knows that it is equipped with X-band and C-band radars, covering various purposes, some are search, some are radar illumination, some are identification of friend or foe, some are monitoring aircraft landing, some are satellite communications, etc. Together with the L-band radar antenna posted below, a total of 32 flat-panel antennas are used on this ship island."

32!

Look at the British Queen-class aircraft carrier. It just has a radar on the front island, and it has to be rotated to search. Why don't they have a four-sided phased array?There's no way around it, it's too expensive in all directions!They simply cannot afford the equipment, and only Dongfang can make such radar antennas at a bargain price, and use them however they want.

"The island is so small, does it still have a dedicated captain's room and command room?" someone asked.

Now, the 002 aircraft carrier has successfully completed its sea trials. If it were not for some reasons, it would have been commissioned. Navy leaders have gone up to see it and are full of praise for the two suites above.

Now that the island area has been reduced so much, are there still these dedicated luxurious cabins?

"Yes, it is on the sixth and seventh floors of the ship island." Babbage continued to play the next slide, and a perspective view of the ship island appeared. It was clear what the purpose of each layer was.

Where the captain and commander rest, where the pilots hold meetings and discuss tactics, various electronic equipment, etc., every cabin is clear.

"Old Wang, why are you thinking about the commander's position? Are you planning to move up there?" the leaders began to joke.

"Yes, I thought about it. Don't argue with me then."

After a brief interlude, Babbage continued to introduce: "Okay, now that the island part is introduced, I will continue to introduce it. The first floor below is the hangar. The area of ​​this hangar is larger than that of the previous ship. Each functional area There is also a clear division of labor..."

This meeting was actually more of a formality. After all, Mingzhou Group is very mature in designing aircraft carriers and there will be no problems. The navy leaders also fully agree.Various design plans have been finalized, and now it's just the final word.

After Babbage finished his introduction and answered some questions from the Navy leaders, finally, Wu Shengli said on the rostrum: "Okay, this meeting was a complete success! Now, I announce that the design plan of the 003 aircraft carrier has been frozen. Move to the manufacturing stage!”

(End of this chapter)