"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. If it is sold to outsiders, 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’s?
"If they don't use our generator, they can only use the generator developed by Alstom's Mechanical and Electrical Department for the 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 3,600
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 5,000 rpm. How do 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. 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 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 a reduction gear is added, it will be even more difficult to connect to the grid."
It’s not easy to adjust it properly. 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, converting it into direct current is enough, 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 is not good. When they bought the generator, they found that it was still unable to be connected 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, you can convert alternating current into direct current. However, converting direct current into alternating current is not easy.
This requires the participation of advanced high-power semiconductor components, such as IGBT and MOSFET, etc. In this field, Dongfang is the leader!
Why doesn't the West use medium-voltage DC instead of AC? It's 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 is 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 still has to connect 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 aircraft carriers, and soon the aircraft carrier's integrated electric power, electromagnetic ejection, and electromagnetic interception were mature. These experiences were used on electric vehicles, and the technology quickly made a breakthrough.
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 sparks 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 over." 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 roam freely 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 on the Internet, how can you have the feeling of 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."
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.
This chapter is not finished yet, please click on the next page to continue reading the exciting content! "Okay, let's go to Huating first, pick up the staff from the Second Design Office, and go to the capital to report the specific project to the leaders. As long as the project is approved, then
We can start construction on 003 immediately after 075 is launched, and the dock can be used all the time."
"Um."
The capital seems to have been shut down for a while and has not yet recovered. 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 through time by myself.
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 the Mingzhou Group's shipyard will be built soon.
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 be allocated to the Mingzhou Group's account soon. Our current best
The most 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 you."
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 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 must 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.
"With a full load of 100,000 tons? Is our power system sufficient?" Navy leaders first thought of this question.
"Our Linglong No. 1 nuclear reactor has a core power of 700 megawatts and a generating power 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 at 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 require 160 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.
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 electromagnetic catapults, which are large power consumers.
"You also added two 40-megawatt gas turbines. Isn't this a bit too much?"
Does it need such a large amount of 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 just like Lao Maozi. Even if there is a nuclear reactor, he still has to burn the boiler, just in case the nuclear reactor does not work, he can still rely on burning the boiler to move forward. In fact, Lao Maozi's worries are justified. In the 1990s,
, a Kirov-class ship had a problem with its nuclear reactor and ended up relying on its boiler to get home.
As for our own side? That kind of accident should not happen. These two gas turbines are only temporarily providing power for use. 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 fuel. 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 guys can't 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. Our country has already built a nuclear-powered aircraft carrier with the intention of saving money. But now, it is better to have a nuclear-powered aircraft carrier and actually have to erect a large chimney. What are you trying to do?
This chapter is not over yet, please click on the next page to continue reading! "No, our gas turbine is arranged slightly higher and is directly discharged to 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 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, the Second Design Department debated for a long time, 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.
Whatever the navy wants, we will design it.
Difficulty in 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 never 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. Center-mounted islands are the most reliable.
.
As for the catapults, after considering the price of the catapults, the Navy resolutely chose four. One more catapult will 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 the 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, so take-off and landing will be smooth.
any hindrance."
In fact, on the No. 002, the No. 2 catapult take-off 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 won't be any 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, 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 operation can achieve
Forty-four, 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
If you want to show off your muscles, you can 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 is finally able to provide the navy with such advanced equipment. All of them are shields, which 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, but this ship island looks almost square, smaller and more refined, and this layout also makes it more spacious.
This creates a huge deck area, which can accommodate at least two more carrier-based aircraft!
The lower layers all 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, smaller at the bottom and larger 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 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 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 following four 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."
This chapter is not finished yet, please click on the next page to continue reading the exciting content! Thirty-two!
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 is no way, the four-sided phased array is too expensive! They simply have to equip it.
No, only Dongfang can make this kind of radar antenna at a bargain price, and you can use it however you 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 it were not for some reasons, it 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, it is on the sixth and seventh floors of the island." Babbage continued to play the next slide, and a perspective view of the 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 clearly visible.
"Old Wang, why are you thinking about the commander's position? Are you planning to move up there?" the leaders began to joke.
"That's right, 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 already very mature in designing aircraft carriers, so there won't be any problems. Navy leaders also agree very much. Various design plans have been finalized.
, now it’s just the final word.
After Babbage finished his introduction and answered some questions from the Navy leaders, finally, on the rostrum, Wu Shengli said: "Okay, this meeting was a complete success! Now, I announce that the design plan of the 003 aircraft carrier has been frozen.