Wang Buan entered the flight tower.

Liu Zhenhua nodded at him. But there was no talk.

Wang Buan also nodded silently.

Cheng Kailong quietly gestured not far away, signaling him not to speak.

Obviously, Liu Zhenhua and Cheng Kailong mean to treat it coldly. It is estimated that his identity will be downplayed. so as not to be targeted by those who have a heart.

That's a good thing. Of course, Wang Buan actively cooperated.

The more his identity is diluted, the better. It is better not to have any connection with the military industry.

The 220 Institute itself is a front. Above him, the names of several "big people" also appeared in a hurry. They are the "real" leaders of the 220 Institute.

If you don't know the details, you will definitely go for these fictitious names. Who cares about him, Wang Bu'an?

Mach 15

Mach 20

Mach 25

Mach 30

The unloaded Bull Demon King transport plane was extremely fast, and easily broke through Mach 3.

Its height also quickly exceeded 30,000 meters.

Double three, which used to be very difficult to break through, has become a piece of cake these days. Any plane can easily break through.

Ma Yuhe's feedback is very good. There were no paresthesias.

The readings of various meters are also normal.

Shi Zhongjian was finally gradually relieved.

Two hours later, the Bull Demon King returned to the sea according to the instructions and landed smoothly.

Wang Buan focused on inspecting the landing gear.

This second-hand landing gear is too large to match at all.

Thankfully, it's still very performant. For the time being, it can help the Bull Demon King toss for dozens of hours. However, after dozens of hours, the situation was critical.

Shi Zhongjian is also quite worried about this landing gear. But he couldn't find a better alternative.

Want to produce it yourself? Sorry, there is no technology at all.

"How much does this cost?" asked Wang Buan.

"More than 10 million. Shi Zhongjian said painfully.

"One set, three sets?"

"A set. ”

“”

Wang Buan was speechless.

What a great landing gear. One set costs more than 10 million.

If there are three sets, it will cost more than 30 million. No wonder the Boeing 747 is so expensive. Dare to love every part is tens of millions of starts!

A brand new Boeing 7478 airliner starts at about $300 million. It is equivalent to about 2 billion yuan.

If you want to say that the most valuable part of the aircraft, in addition to the engine, it is estimated that it is the landing gear.

For transport aircraft, the landing gear is also very critical.

This issue must be addressed.

Otherwise, the Bull Demon King can only stay on paper.

If you want to mass-produce, it is impossible to continue using the landing gear of a second-hand Boeing 747.

Obviously, Shi Zhongjian does not have the technology to solve the problem of landing gear for the time being. Only Wang Buan can.

Accidentally, Wang Buan's road map has another episode: the landing gear of a super-heavy aircraft. It must also be addressed in the near future.

The no-load test flight was successful.

Next, it's a half-load test flight.

A large number of sliding fireproof boxes were moved inside the cabin. Each fireproof box is about 1 cubic meter. The weight is about 100 kg.

Layers of wooden crates are evenly distributed in various positions of the cargo hold. The weight is about 80 tons.

In this way, the take-off weight of the Bull Demon King reached more than 160 tons.

Shi Zhongjian couldn't help but get a little nervous.

This is the real payload takeoff.

With a load of 80 tons, it is already more than the Il-76 transport aircraft.

As long as the 80-ton half-load test flight is successful, it means that the Bull Demon King has the possibility of replacing the Il-76. At least competitive.

The sale price of the Il-76 is also very expensive. At least $200 million to start. It was once reported that the two AWACS aircraft modified with the Il-76 that the polar bear sold to a large country in South Asia received a full $1.1 billion. If it is converted into RMB, it is 7 billion. It is enough to produce more than 20 Bull Demon King transport aircraft.

If it is transformed by Wang Buan, it can even produce more than 30 aircraft.

Obviously, there is a gap, a difference between heaven and earth.

No wonder even if the Bull Demon King was cobbled, the test flight would be approved above.

Obviously, the superior leaders don't want to be constrained by Il-76 and don't want to continue to be a fish in the water. In the field of large transport aircraft, it is necessary to be self-reliant.

This time the test pilot was Kong Lingwei.

He is also a veteran test pilot.

According to him, this month is a full 100 hours of flight.

Previously, each test pilot could fly less than ten hours per month. This month, it has increased more than 10 times!

The favorite thing of the test pilots, of course, was that during the test flight, there were no mechanical failures at all.

There is no danger in this way. There is no need to analyze a large number of reports after going to the field.

Initiate.

Takeoff.

All four engines burst out in unison.

The Bull Demon King took off easily.

The take-off distance is less than 250 meters. It shows that the motivation is still too strong.

This will be very large for the pilot. At least 8 or more. If the control is not good, the test pilot is likely to have black or red vision.

Fortunately, Kong Lingwei's operation is still more appropriate. His body didn't feel sick.

Two hours of flight without problems.

The 80-ton Bull Demon King transport plane made several relatively intense moves in the air. No anomalies were found.

After landing, Kong Lingwei had only one test flight opinion:

Extend the take-off distance appropriately.

It is recommended to extend the take-off distance to more than 350 meters. Preferably more than 400 meters.

The power of the four engines is just too high.

He felt that only two engines would be enough. If there are four engines, it is easy to cause overload.

Experienced test pilots may be fine. However, the average pilot may misoperate. If there is black vision or red vision, there is still a chance to adjust. The most feared thing is to fall into a coma on the spot.

Shi Zhongjian was relieved again.

This was followed by a fully loaded test flight.

Empty weight 80 tons, maximum take-off weight 260 tons. The load is close to 180 tons.

The person in charge of the test flight is still Kong Lingwei.

A large number of fireproof boxes were loaded onto the top of the conveyor.

At this time, the appearance of the ugly pot-bellied poop finally came into play.

The super large belly guarantees enough room to hold.

A full 1,800 fireproof boxes have been successfully stuffed in.

It is estimated that an ordinary helicopter would be able to cram in.

Tanks or something, don't worry about it at all.

If the location is properly arranged, two super heavy tanks can be transported.

But Shi Zhongjian's design is obviously conservative. He designed the cabin fixtures that could hold only one tank. There is no way to secure the other one.

Obviously, this shortcoming, after the end of the test flight, will definitely need to be improved. Thankfully, it's not a big problem.

All you need to do is redesign the fasteners on the floor.

However, the technical content of these buckles is also very high. Each buckle is required to be able to withstand a weight of more than 15 tons.

The design of the stone backbone is made by direct welding, and the ground bulge is too serious and uneven.

For large objects, this may not be a problem.

However, for some precision machines, a significant bulge can lead to an imbalance.

Of course, these are minor issues. Later improvements are sufficient.

Initiate.

Takeoff.

More than enough power.

It flew easily.

With a load of 180 tons, it flew easily.

According to the requirements of the test flight, the flight altitude is maintained at 15,000 meters, and the flight speed is not allowed to exceed Mach 2.

Obviously, this is no problem at all for the Bull Demon King.

Two hours later, the landing was successful.

But the test flight program has not yet ended.

It is estimated that at least 150 hours of further test flights will be required before a final test flight report can be obtained.

However, judging from the three test flights so far, the performance is very good.

If there are no accidents, the follow-up test flight will only further improve the test flight data. It's a routine.

"Chief Engineer Wang, I have a request. ”

"What request?"

"Please put the design of the Bull Demon King under the name of your 220 Research Institute. ”

"Why?"

"We work together on R&D. ”

"Are you sure?"

"Sure. ”

That's right, joint R&D.

220 research institute out of the engine. The 217 Research Institute is responsible for the airframe. In all reports, the names of the two institutes are written.

Is it okay to do this?

Of course.

It is feasible if there is no prohibition in the law.

Who told the other research institutes not to hurry up? Who told the 217 Research Institute to move fast?

Who told the 217 Institute that it needs the endorsement of the 220 Institute?

Before officially submitting the joint research report, Wang Buan took another look at the Bull Demon King. Its pros and cons are summarized.

After all, this is a transport plane that wants his endorsement, and it must be done with caution.

The advantages of the Bull Demon King are many.

First of all, it's very cheap. As long as more than 200 million yuan.

Secondly, the manufacturing process is very simple. The difficulty of machining parts is low. The average aircraft factory is able to do it. Some parts can be completed by ordinary machine shops.

Thirdly, maintenance is also very simple. All of them are welded and require little maintenance.

After all, what Shi Zhongjian applied was completely at the level of a primary training machine, which was the most entry-level. Ground staff can't be difficult. Even the pilots themselves were able to act as ground crews on a temporary basis.

With these characteristics, it is impossible for the Air Force rabbit to look down on it. Replacing the Il-76 is no problem.

According to the design of the 217 Research Institute, the load capacity of the Bull Demon King is actually the smallest, only 160 tons, and the actual overload can reach 180 tons.

There are also models with a larger load capacity.

Above the Bull Demon King, there is Zhu Bajie. Deadweight 250 tons.

Above Zhu Bajie, is Maitreya Buddha. Deadweight 500 tons.

There are even bigger ones. Codenamed Kunpeng, it is 1,200 tons.

Shi Zhongjian is a typical person of how bold and prolific the land is. Once the Bull Demon King is successful, follow-up models will come one after another.

The biggest limitation, in fact, is the landing gear.

The landing gear needed to support a weight of 250 tons, which he could not do.

Therefore, Zhu Bajie has no prototype for the time being.

To date, 125 engines, in total, more than 200 units have been produced. Most of them were used in test sites. The official installation is not yet available.

Probably such an excellent engine, I don't want to use it on the J-8.

In Shi Zhongjian's hands, there are a total of four.

Now all four are used up.

What about other prototypes?

He had no choice but to turn to Wang Bu'an for help.

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