Everyone chatted for a long time in the J-20 assembly workshop. After eating, they continued to look at the J-10 production line.

"We have gained experience from the J-31A production line. Now we use the pulsating production line to produce the J-10. This method has greatly improved our efficiency. The current monthly output of advanced J-10 fighters can reach two." Song Lao brought Wu Shengli and Qin Tao to visit the production line. Although the Navy did not want these fighter planes, the Navy was also qualified to see them.

“They are both single-engine medium-sized aircraft, but the Air Force actually likes the J-10 and does not place all orders on the J-35?” Wu Shengli said with a smile.

The J-35 is the Air Force model of the fourth-generation stealth aircraft developed by the Mingzhou Group. The Air Force also took a fancy to it and ordered a batch, but it was not fully ordered. After the J-10 was successfully developed, the Air Force also ordered the J-10.

The two fighters are about the same size, both use single-engine thrusters, and the J-35 has the absolute advantage in terms of performance. So, why doesn’t the Air Force fully purchase the J-35?

"Because the J-35 is an export-oriented fighter." Qin Tao answered this question: "There is no secret about this fighter. Although the use of this fighter in the Capital City is very tight now, in five or ten years, There are no secrets about this fighter. The J-10 is a fighter for our own use and has a canard layout. The outside world is not familiar with it. Of course, the Air Force cannot put all its eggs in one basket."

When there were no J-35s back then, the Air Force purchased imitations of the Su-27 in large quantities. At that time, some people said that there was no need to develop the J-10 on its own, and that the research and development funds should be freed up to buy more Su-27s. This statement was wisely criticized. Mr. Lin and others rejected it. No matter how good the Su-27 is, it belongs to others. The Jian Shi is his own child, and he must never let his child die again.

When the J-10 was born, the outside world had no idea how maneuverable it was. Even though it was a single-engine fighter, during domestic confrontations, it often beat the Su-27 to pieces.

Now, of course, the Air Force will not give up on the J-10.

"Yes, Mr. Qin is right. We built the J-10 ourselves, and the technology is kept secret and unknown to the outside world. Therefore, the Air Force still needs to purchase a batch of low-end fighter jets, even if it does not perform air superiority missions in the future. It's not bad to be a bomb truck for him." Mr. Song said with a smile.

To position the J-10, just aim at the F-16. The Air Force needs advanced stealth aircraft, and it also needs non-stealth aircraft that can carry a large number of weapons.

“Since it is a bomb truck, the J-10 must also be upgraded. Mr. Song, you quickly developed the J-20 after the J-10 was finalized, and you have not considered the upgrade of the J-10, right?” Qin Tao asked.

 “J-10 upgraded?”

Due to the existence of the J-35, the status of the J-10 is a bit awkward. Everyone thinks that this aircraft is just transitional and there is no need to continue to improve it. However, Qin Tao put forward a different point of view.

J-10 still needs to be changed!

Looking at the six sticks on the J-10's rectangular air inlet, Qin Tao said: "For example, since air superiority is no longer the main focus, then the adjustable air inlet with this negative isolation layer is a burden. We have The advanced DSI air intake can be completely transplanted to save weight and improve efficiency, even if the high-altitude and high-speed capability is slightly reduced."

In the era when the J-10 was just developed, the Air Force lacked advanced combat aircraft, which put a lot of requirements on the J-10. It must have high maneuverability and high-altitude and high-speed capabilities!

If you want high altitude and high speed, then the air intake must be particular.

Although the F-16's fixed pitot inlet is nominally capable of flying up to Mach 2, after Mach 1.6, it has to slosh slowly, and the acceleration process is extremely slow, because at high speeds, the air inlet Huge resistance is generated. The higher the speed, the smaller the air inlet must be, which requires an adjustable air inlet.

The J-10 uses a complex adjustable baffle inlet, which is necessary to perform air superiority missions, but if it is used as a bomb truck in the future, it can completely use a bulging inlet.

Mr. Song nodded.

Although Mr. Qin is a shipbuilder, he has also put forward many useful insights in the aviation industry. If you look at the fourth-generation stealth aircraft being mass-produced in China, you will know how powerful Mr. Qin is. The overall advice makes sense.

J-20 can use bulging air intakes, and of course it can also be transplanted to J-10.

“As for the engine, after our turbofan is mature, we can also replace it with a turbofan. The third uncle is just a temporary replacement.”

"There are also avionics equipment. Our domestic electronic technology is developing very rapidly and will become obsolete in five years. It can be completely replaced by more advanced avionics. When our active phased array radar becomes cheap in the future, it can also be used Active phased array radar to replace."

"Mr. Qin, according to what you said, our J-10 will undergo a major overhaul." Mr. Song said: "We have to wait until the J-20 makes its first flight before we can gather enough technical strength. Do it.”

Wu Shengli was a little disapproving from the side. This aircraft is just a transition. You really regard it as a treasure, with various improvements.

Of course Wu Shengli didn’t know how much Qin Tao, as a time traveler, valued the J-10. For the motherland’s aviation industry, this aircraft played a major role in connecting the past and the future.

After staying in the Land of Abundance for a day, Qin Tao saw the progress of the J-20 and gave some pointers. He was very satisfied. That night, Qin Tao and his father-in-law began to discuss tomorrow's plan.

"Since we are here, there is no need to rush back. We can go to the plateau to see how the construction of our railways and oil pipelines is going." Qin Tao said.

Under Qin Tao's promotion, the oil pipeline from Gwadar Port to the country was taken seriously. After all, railway transportation is not as fast as oil pipelines, especially since the Qinghai-Tibet Railway is only built to LS. From LS to the border, oil pipelines still have to be built, otherwise It has to be transported by car, which is even less efficient. It has been a few months since the last decision on this plan. How is the construction going?

 Qin Tao is looking forward to it.

“It’s winter, it’s freezing cold there, are you sure you want to go?” Wu Shengli asked.

“Our construction workers are not afraid of cold weather, how can I be afraid?” Qin Tao said: “By the way, Dad, you are old, and this matter has nothing to do with the navy, so don’t go.”

"You kid, are you looking down on me?" Wu Sheng rolled his eyes at him: "If you can go, I can go. Let's just sit in the railway engineering vehicle and move along the railway!"

 After the railway is repaired, it cannot be put into operation immediately. It must first be run in for a period of time, which requires special vehicles to run back and forth on it.

However, you can’t take the railway immediately. After all, the Qinghai-Tibet Railway is connected to Chengdu and departs from Xining, Qinghai. Qin Tao and Wu Shengli could only take the Black Hawk to Golmud first, and then go to LS from Golmud.

"Currently, the development of our domestic Z-20 is going smoothly, especially Tianjiao Aviation, which is making rapid progress in developing engines for helicopters, ensuring the research and development of helicopters." On the Black Hawk, Wu Shengli and Qin Tao continued to chat: "It is expected that we will When the aircraft carrier is put into service, only twenty people will be able to board the ship."

Qin Tao nodded: "By then, the hangar on our destroyer will be completely designed according to the Z-20 design, and we will not need other helicopters."

The Zhi-9 is too small, and the Ka-27 is too tall. None of these are suitable. When the domestic destroyer was being designed, the hangar was always a troublesome place. When the Z-20 came out, we could finally breathe a sigh of relief. The helicopter with snake oil has Got it!

The army, air force, and navy will all use this kind of helicopter as the main force. Even an amphibious assault ship will carry a group of twenty helicopters.

“However, in the field of helicopters, we are still lagging behind. The United States already has the Osprey, so we still have to work hard.”

The motherland has spent decades catching up with the world's advanced level, and has reached world-class levels in some fields. However, it still has shortcomings in other fields. Because helicopters do not seem to be too important, they have not been used for a long time. has been ignored for a long time.

The Z-20 currently developed has just reached the level of the Black Hawk, and the US military has long planned to eliminate the Black Hawk and replace it with a more advanced tilt-rotor aircraft.

"Yes, we still have to work hard, but now we have to use good steel on the cutting edge, and we can't be so anxious. In the future, we will also have advanced tilt-rotor aircraft." Wu Shengli said.

Outside the port window, the undulating plateau has appeared. This scene looks very beautiful, with so many beautiful mountains and rivers!

 The helicopter landed in Golmud, and everyone came to the platform with great interest.

“Welcome all leaders, we have prepared advanced imported trains for them.” Pan Renbao, the person in charge of the station, said excitedly. His bronze face represents that he has been working on the plateau for many years.

“Imported trains?” Qin Tao frowned: “Don’t we have domestic trains?”

“Mr. Qin, the quality of our domestic trains is poor and cannot be compared with imported trains. For your safety, we specially..."

“No need to be special, I just like domestic products. If there are domestic products, I won’t take the imported ones.” Qin Tao said: “Comrades, please change the front end of the car for us.”

"Yes!" Behind Pan Renbao, an engineer replied excitedly, and then he ran out. He didn't take two steps, and fell down with a thud.

"Lao Zhang, you just came to the plateau not long ago and you can't do strenuous exercise. You don't even know this? Quick, take a few breaths of oxygen." Pan Renbao said, calling the people next to him to get the oxygen tank.

Zhang Guangming took a few breaths of oxygen before he recovered: "Old Pan, can I be unhappy? Your railway department says that domestically produced products are not as good as imported ones. We don't believe this evil. Our Qishuyan factory has specially developed the snowy terrain for the plateau. The performance of Shenzhou diesel locomotives is definitely no worse than those in the United States!"

 There is something going on here! Qin Tao's face gradually became serious: "Gong Zhang, tell us, what is going on?"

 The locomotive change started outside, and Zhang Guangming, an engineer from Qishuyan Plant, introduced it to everyone at the station.

"Mr. Qin, our Qishuyan factory is a long-established railway locomotive manufacturer. More than ten years ago, the railway department continued to increase speed, requiring passenger cars to reach 140 kilometers per hour, trains to reach 90 kilometers per hour, and the maximum axle load to reach 25 tons. At that time, our Qishuyan Factory developed a new type of high-power diesel locomotive, named Dongfeng 8B. This locomotive can tow 5,000 tons of cargo and drive to a speed of 90 kilometers per hour, and there is still plenty of power and capacity. After production, it will become the most advanced diesel locomotive in China."

"Old Zhang, if you don't mention your bravery, why do you always mention these things? Your Snowy Shenzhou is just an improved model based on the Dongfeng 8B. This kind of locomotive has not been specially improved for plateaus, and it cannot be used at all. It meets the needs of our plateau railway." Pan Renbao said at the side.

 After speaking, he looked at Qin Tao: "Mr. Qin, you probably don't know the technical issues involved. Let me introduce them to you."

Zhang Guangming said something, but his body couldn't bear it anymore and he continued to inhale oxygen. Pan Renbao pointed to the map hanging on the wall and introduced it to Qin Tao and others: "Our second phase of the Qinghai-Tibet Railway starts from Golmud and crosses the Kunlun Pass. Tanggula Mountain enters the territory of XZ and finally reaches LS City. The total length of the railway is 1,140 kilometers. The areas along the line are high-altitude areas. The length of the railway with an average altitude of more than 4,000 meters is a full 960 kilometers. Especially the Tanggula Mountain Pass, the highest The altitude is 5071 kilometers."

“Not only is the height too high, in the areas along the northern **** of Kunlun Mountain and Yangbajing Canyon, the drop reaches one thousand meters! The maximum **** of the line reaches 20%…”

Qin Tao nodded: "I know what you mean. Because of the high altitude, the power of our railway locomotives has dropped seriously. If we climb the hill again, you are afraid that the power will be insufficient."

"That's right. Based on the existing test on the first phase of the railway section, when a diesel locomotive is at an altitude of three thousand meters, the diesel engine power is reduced by 25%. Based on this calculation, if it passes through the Tanggula Mountain Pass, the power will be lost by 100%. Forty-fifty points, the front end of the locomotive may not be able to provide enough traction, causing serious safety hazards to our trains." Pan Renbao continued: "Even if our diesel engine uses a supercharger, at an altitude of more than three thousand meters, The efficiency is already very low. If we want to go to the second phase of the railway, we must use a special plateau supercharger. Therefore, the railway department decided to import advanced diesel locomotives from the United States."

Wu Shengli frowned on the side. It looked normal on the surface, but judging from his many years of experience, there was something wrong with it!

"After hearing that we lacked plateau locomotives, the American General Electric Company and EMD came to bid. After comparison, the railway department decided to choose General Electric's C38AChe plateau diesel locomotive. This locomotive has now been named NJ2 type, where N stands for internal combustion engine and J stands for AC transmission. This is a locomotive specially developed by General Electric Company for our plateau railway."

Qin Tao smiled: "The railway department's choice is really interesting. They found a country with the least developed railway technology to build our locomotives."

 Is the United States technologically advanced? It is true that some technologies are incomparable, but there are also some technologies that are not very good, and railways are one of them.

Although the total mileage of American railways ranks first in the world, they are all old railways built in the past. Of the total mileage of more than 200,000 kilometers, only more than 1,000 kilometers are electrified railways, and the rest are diesel locomotive railways. , even more than 90% are sleeper structures. After all, they were built decades or even hundreds of years ago. These old railways have led to low operating efficiency and frequent safety problems. For example, From 1990 to 2021, there were an average of 1,705 derailments per year, an average of 4.7 times a day.

 How can such a railway be safe? Can the diesel locomotives produced in this country also become advanced?

After the opening of the Qinghai-Tibet Highway, 18 NJ2 diesel locomotives were put into use. As a result, during the first 1.5 million kilometers of operation, 16 major quality problems occurred: diesel engine radiators leaked, locomotives ran The internal stone sweeper loosened and fell off, the friction plate of the axle box guide frame fell off due to inertia, the locomotive air compressor cooler failed, etc.

The myth made in the United States was shattered. The railway department did not dare to continue to use this imported diesel locomotive alone. It could only arrange for trains such as the Snowy Shenzhou to be jointly pulled with this train. After that, domestic research and development began to continue, and more Advanced domestically produced diesel locomotives.

“Mr. Qin, the railways in the United States are the most developed. Their total railway mileage ranks first in the world. At the same time, they also have rich experience in the research and development of diesel locomotives.”

The railways in the motherland are also developing rapidly. However, the railways in the motherland will soon enter the era of electrification. As long as a power grid can be laid, electrification transformation will be implemented as soon as possible. After all, the manufacture of electric motors is much easier than the manufacture of internal combustion engines.

 So, in terms of internal combustion engines, China is really not as good as the United States.

“But do they have plateaus thousands of meters above sea level?”

The United States has a very good geographical location. It is alone on a continent. They can participate in the world war if they want to, and no one can fight on their soil if they don’t want to. At the same time, the terrain is also very good: there are a few mountains in the west, plateaus in the center, and plains in the east. Moreover, the altitude of the plateau is not particularly high, with an average altitude of only 760 meters.

 Looking at the east, although there is a land area of ​​9.6 million square kilometers, only the east is suitable for farming and living, while the west is only suitable for short-term tourism and not suitable for normal human life.

"Although they don't have a particularly high altitude, they have rich experience." Pan Renbao continued: "Mr. Qin, you and Leader Wu are the most important figures in the country. There must not be any accidents. You should follow our arrangements. .”

 “Of course not, I believe in domestically produced motorcycles more.”

Zhang Guangming's eyes were full of gratitude: "Mr. Qin, thank you for your trust. We are confident to complete this mission, and there will definitely be no problems with the front of our car!"

“President Qin, how about we use dual locomotives? Also mount American locomotives?” Seeing this, Pan Renbao knew that there was no way to stop Qin Tao from using domestic products, so he could only provide a dual insurance plan.

 “No need.” Qin Tao shook his head.

"Let's hang it up." Zhang Guangming said, "This can also test the traction capacity of our locomotive."

Wu Shengli also said on the side: "Yes, Tao Zi, for a long time, we will need to transport oil from the Middle East by train. Our front end needs to have enough traction."

 Qin Tao smiled, yes, if you go to LS, you need to climb a hill, but if we transport oil, we have to go downhill! It is being transported up and down the plateau, so the traction force should act as a reaction and act as a braking force.

However, since my father-in-law has said so, I can no longer insist on it.

"Okay." Qin Tao nodded: "Then let's go with the two heads."

"Mr. Qin, I'll go with you." Zhang Guangming put down the oxygen tank: "I can guarantee that there won't be any problems with the front of our car!"

“As long as there are no problems this time, we will leave the task of transporting oil to you in the future. As long as we can use domestic locomotives, we will not use imported locomotives.”

Pan Renbao had a complicated expression there. Mr. Qin was really serious. Why are you so obsessed with importing or domestically produced products?

 The front of the car was changed and everyone got on the car.

At the front is the Snowy Shenzhou, which is the modified Dongfeng 8B. Behind it is the NJ2 locomotive imported from the United States. The appearance of the two locomotives is different. The NJ2 locomotive has American characteristics. The front part is recycled, just like the NJ2 locomotive. Just like the ancient locomotives from hundreds of years ago.

 At the back are four green leather carriages and four cargo boxes.

A train that can transport 5,000 tons of cargo in plain areas can reduce its transport capacity by half to transport 2,500 tons on the plateau, which is enough to ensure safety. But now, the total weight of the entire train is less than 1,000 tons, which is simply not possible. No accidents will happen.

 The train started and slowly left Golmud. This unique journey finally began.

Woooo!

With the whistle blowing, the train drove on the snowy plateau. Looking at the scenery on both sides, Qin Tao said with a smile: "I used to like to go to the southern seas and islands when traveling, but now I realize that this plateau is not bad."

"Yes, the plateau has the scenery of the plateau. When we said we were going to build a railway, I came with them to investigate the railway lines. When we came back, I was attracted by the scenery here. At that time, I was thinking that we must make our own railway locomotives run. On this plateau, Mr. Qin, thank you for your support!"

"What I despise the most are those guys who keep shouting about how advanced imported goods are. Some of our industrial technologies are lagging behind, but if there is a gap, we will catch up until we develop to the world's advanced level. If we fall behind, we will go abroad. When will we develop our own products?" Qin Tao said: "Besides, now our technology has also developed, isn't it plateau railway trains? I believe that the products developed by our relevant units are no better than those in the United States. behind!"

“At an altitude of 3,500 meters, the traction test is fully qualified!”

“Through the uphill section, the self-load power correction is completely normal!”

“The locomotive’s cold protection function is normal!”

 The tests are reported one after another, and there is no problem at all with this domestically produced motorcycle!

Ahead, more than 100 kilometers of long ramps with a **** of 20% appeared. Zhang Guangming was full of confidence: "Our snowy Shenzhou, keep moving forward!"