Chapter 982 One Hundred Thousand 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 2 million. The price of Mingzhou Group’s internal supporting equipment is only 4 million. When sold to external parties, 10 million is already very profitable. Mr. Qin actually quoted 30 million, which is not the case. You idiot, don’t you know how to 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 the alternator to directly emit alternating current with a frequency of 60 Hz. As for our UGT40000, the power turbine output speed is more than 5,000 rpm. 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 80 million. Our two generators only cost 60 million, which is 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 a reducer.
"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. After they bought the generator, they found that they still could not connect to the grid, so they had to continue to purchase 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 forward.
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, it still needs to be connected to the grid for power supply at the end of the user's end.
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 power, electromagnetic catapult, and electromagnetic interception were soon matured. These experiences were used in electric vehicles, and the technology quickly achieved breakthroughs.
Yes, electric cars also benefit. After all, the battery is DC, but the motor needs AC. Only AC motors do not need brushes. This will cause early wear and tear, and the sparks generated may also be 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 will 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.
"explain."
“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 40,000 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 40,000-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.
Watching it on the Internet, how can you have the feeling of being there in person?
Come just come, it’s just seven more days of food money.
“Also, the relevant leaders of the Navy can’t wait any longer and have 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.”
Think 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 003 immediately after 075 is launched. The dock can continue Use it.”
"Um."
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 most important thing is to review the design.”
“Yes, we at Mingzhou Group are also looking forward to the approval of the plan and the start of construction.” Qin Tao said: “Now, please let our Mr. Mao Gengxin introduce our design plan to you.”
Babic 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 80,000 tons, and its full load displacement is 100,000 tons.”
Although they were always talking about 80,000 tons, 80,000 tons, there was no stipulation 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 80,000 tons, and 003 will of course transition to 100,000 tons.
“A full load of 100,000 tons? Is our power system enough?” Navy leaders first thought of this question.
"Our Linglong No. 1 nuclear reactor has a core power of 700 megawatts and a power generation of 120 megawatts. In this way, the main engine alone can provide 240 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 40-megawatt gas turbines as auxiliary engines. When needed, we can add an additional 80-megawatt power supply. There will be no problem in propelling a 100,000-ton warship with this power. After all, Our tail drive motor is 40 megawatts, and four of them only have a power requirement of 160 megawatts."
“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 promise 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.
One hundred and sixty megawatts of electricity can already propel the aircraft carrier to a speed of thirty knots. The remaining electricity is of course used to power other systems, especially the electromagnetic catapult, which is a large power consumer.
Does it require such a big power? The British Queen class, which is 60,000 tons, only uses two 40-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 1990s, a Kirov-class nuclear reactor had problems and ended up relying on a boiler to get home.
As for our own side? 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. After all, it is cheap. 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, fire it and then it will be an emergency.
“Does such a large power host need a special chimney?”
The chimney of an aircraft carrier will also occupy a large deck area. We have already built a nuclear-powered aircraft carrier, which was intended to save money. Now it is better to have a nuclear-powered aircraft carrier, but we actually have to erect a large chimney. What are we trying to do?
“No, our gas turbine is located 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.
The two 40-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 talk about 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.”
At the beginning, there was a long debate in the Second Design Office about these layouts, but no decision was made. In the end, we could only ask Qin Tao. Qin Tao cut the knot quickly and solved it directly: ask the navy.
What the navy wants, we will design.
Difficulty in choosing? Then leave it to others to choose.
The Navy didn't know how long they debated it, and finally made 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 is 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. 2 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. 4 catapult at the edge will not interfere with the landing area at all. Only the No. 3 catapult is within the landing area."
The No. 4 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 20,127 square meters. According to the normal layout, it can carry twenty J-15s and twenty J-32s, plus two KJ-600s and two helicopters. Normal operations can be carried out on the deck. The number of carrier-based aircraft has reached forty-four, and if all of them are equipped with J-32s, the number will be even more."
The Yankees' USS Ford aircraft carrier has a deck area of 19,827 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. Forty-four aircraft, 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 good. 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, Eastern electronic technology has developed rapidly, and it has finally been able to provide the navy with such advanced equipment. All of them are shields and look very grand.
The slide continued to switch, and the appearance of 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 upward is the main radar.
This one 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 thirty-two flat-panel antennas are used on this ship island."
Thirty-two!
Look at the British Queen-class aircraft carrier. It just has a radar on the front island and has to rotate 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 sea trials and, if not for some reasons, has 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, 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. The purpose of each layer was clear.
Every cabin is clear where the captain and commander rest, where the pilots hold meetings and discuss tactics, various electronic equipment, etc.
“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 have thought about it. Don’t argue with me when the time comes.”
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 formal than a formality. After all, Mingzhou Group is already very mature in designing aircraft carriers, so there will be no problems. The naval 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)