Rule department scholar

Now, how long?

When Zhao Yi heard Liu Jiankun said that he could take a test flight, he simply didn't continue to explain the internal parameters. Anyway, he had already passed, so why waste his saliva discussing professional things with a group of guys who don't understand technology?

……

Liu Jiankun and several leaders stayed in the Warhawk group, waiting for the test flight of the Warhawk-[-] engine, which also made the work of the group's testing department very efficient.

one day.

All data and system docking work is over.

Three days.

The test aircraft J-8B completed the modification.

Day [-].

The Zhanying [-] engine was transported to Yangzhen Airport, and the technicians, engineers, Liu Jiankun and others of the Zhanying team simply set off to Yangzhen.

When they arrived near Yangzhen Airport, a group of people were arranged to stay nearby, so they could have a proper rest for a day.

At noon the next day, there was news that the engine was installed on the fighter.

Next to the airstrip of Yangzhen Airport, there is a whole row of fighter jets, mainly J-8 and MiG models, and the farthest one is an improved version of J-8B.

The J-8 model was developed relatively early, and it is also a very classic model. It has undergone many modifications in the early years. It is also a J-8 fighter, and some of its shapes look completely different.

This test flight J-8B, to be precise, is one of the J-8II series. Later, the performance could not keep up, so it was simply eliminated and used as a test machine.

Before the start of the test flight, the personnel of the test department came to make a report, mainly talking about the projects carried out in the test flight. Simply put, it is to start first, then increase the speed to Mach 1.2, and then reduce the speed, and make a few difficult ones. action.

Then, land.

The staff of the test department explained, "The maximum speed that this J-8II series fighter can support is Mach 2, but at the maximum speed, it may be dangerous."

"There are residential areas around here, so we still have to consider safety issues."

"Moreover, even if it is accelerated to Mach 2, the performance of the engine cannot be fully utilized. We finally agreed that supersonic speed is enough."

"Because fighter jets don't get tired, some difficult moves are more dangerous."

"So it's still a routine test."

None of the leadership has an opinion.

Zhao Yi had heard Yuan Haitao's report a long time ago, and he would not have any opinions, and the test flight would begin soon.

far away.

Accompanied by the roar of the engine, J-8B started to move slowly. Its speed became faster and faster, and soon it rushed into the sky, soaring into the sky with a strong attitude.

In the eyes of everyone at the airport, the figure of J-8B is getting smaller and smaller, as if it is almost invisible.

Sudden.

There was a loud bang in the distance!

The sound was a bit shocking when it was heard at the airport, and the technicians immediately started popularizing it, "Don't worry, it's a sonic boom!"

Everyone present was very calm.

As long as you have some understanding of fighter jets, you will definitely know the 'sonic boom'.

A sonic boom, also known as a sonic boom or boom, is an explosion sound formed when the shock wave generated by an aircraft flying at supersonic speed is transmitted to the ground.

When the aircraft is in flight, it squeezes and displaces the air in front of it.When the flight speed exceeds the speed of sound, the head of the aircraft forms a shock wave in the air, and at the same time, a shock wave is also formed at the tail due to the reunion of the displaced air.

When the flight speed of a fighter jet exceeds the speed of sound, a sonic boom will occur.

The sound of the sonic boom can be heard now, which means that the flight speed of the J-8B exceeds the speed of sound (Mach [-]).

At this time, in the eyes of everyone, there was only a small black dot left on the J-8B. Fortunately, not long after, the little black dot flew back again, and the speed was not as fast as before.

When it was about to arrive at the airport, J-8B made several difficult maneuvers, including high-speed lifts, large arc turns, and a semi-low altitude flight.

then.

The person in charge of the test department notified the pilot to prepare for landing.

J-8B made another quick landing, and then slowly taxied back to the starting point.

The cabin opens.

Zhai Licheng jumped out from inside. He immediately took off his helmet, walked towards the crowd, and shouted again, "It's cool! It's so cool!"

"This is the first time I know that J-8 can accelerate so fast!"

"Just now I felt that there was a lot of room for manipulation, but..." Zhai Licheng said with some regret.

Everyone else had excitement on their faces.

Liu Jiankun patted Zhai Licheng on the shoulder, said something like 'hard work', and then took the lead in applauding, "Congratulations to the Zhanying-[-] engine, the test flight was successful!"

"congratulations!"

"This is good news!"

"Clap clap clap!"

Everyone applauded.

Zhao Yi was watched by everyone, but he did not show excitement, but asked calmly, "Mr. Liu, the test flight is over, the next step is to submit the application for review, right?"

Chapter 486 Let Zhang Gangchuan do a good job!

Aviation Group Headquarters Building.

Liu Jiankun returned to the general manager's office, made himself a cup of tea immediately, and then sat on the chair and rubbed his head vigorously. He still couldn't help thinking about follow-up issues such as the development and testing of the Zhanying-[-] engine.

The test flight of the Warhawk-[-] engine on the aircraft has achieved great success.

After that, Zhao Yi talked about the follow-up R&D and testing issues. He said that the project can be submitted for review because he hopes to directly enter the long-term testing stage.

This is a necessary process.

The successful operation test of the engine and the success of the flight test on the aircraft do not necessarily mean that it is perfect, and it needs long-term operation to detect more problems.

For example, the life of various parts of the engine.

Components such as supercharger blades and turbine blades are easily damaged due to long-term exposure to high heat and pressure. Only after long-term operation can a judgment on the service life be made.

This kind of long-term operation is best carried out on the plane. After all, the environment simulated in the laboratory is quite different from the plane flying in the sky.

If any problems are found in the long-term operation, subsequent improvements can be made. After collecting enough data, the engine requirements can be demonstrated and enter the stage of mass production and service.

When Zhao Yi talked about the military's equipment needs, what he actually meant was that he hoped to produce a few more and assemble them on military fighter planes for long-term testing. The -8 is a fighter that cannot fully exert its engine performance.

It would be the best result if it could be fitted to military patrol flights or training fighter planes. A large number of flights can achieve the most direct detection.

This is to use and test at the same time.

Mass production is temporarily impossible, because there will be production only when there is demand. The Warhawk-1 is still on the design drawings, and the Warhawk-[-] engine-targeted fighter has not been produced. It is certainly impossible to achieve mass assembly. More advanced fighters are equipped with engines for testing.

"Problem, there is no problem!"

"But, is it too soon?" Liu Jiankun wrinkled in distress. It can be said that the aviation group has no preparations.

In fact, what Zhao Yi said was correct, but a step was skipped - the continuous improvement after the flight test.

The Kunlun engine has been in this process for several years.

Test flight on the plane, find problems, continue to improve; test flight on the plane, find problems, continue to improve... After three or four consecutive cycles, a few years have almost passed.

Liu Jiankun subconsciously felt that the Zhanying-[-] engine would also have this step, and the speed would probably be faster than the Kunlun engine, but it was completely unexpected to skip the step.

The improvement speed of the War Eagle [-] is too fast, so fast that people can't react.

The airline group was not prepared for this.

First of all, there is the issue of testing fighters. The performance of the Warhawk I must be assembled on the top fighters, but now, the most advanced domestic fighters with mature technology and in service are at most three and a half generations of fighters, and the Warhawk I will replace the third generation. The imported engine of a semi-fighter is a bit unrealistic when you think about it.

There is a high probability that the military will not agree, right?

No one wants the most advanced fighter jet in their hands to be used as an engine test machine, right?

In addition, there is the issue of cost.

Liu Jiankun was looking at the cost of the Warhawk-5000 engine. He made a rough calculation. The material and manufacturing costs of the first assembled Warhawk-[-] engine had already exceeded [-] million yuan.

This is because the development speed is fast and not too many parts are consumed, which is much lower than expected.

If a few units are to be produced, at least [-] million or more funds must be prepared, because the cost can only be reduced by a part because they have not entered the stage of mass production, and each unit will reach an average of [-] million yuan.

An engine with a cost of [-] million yuan is acceptable for assembling top-level fighter jets, but for assembling ordinary third-generation fighter jets, the price of the engine may be higher than that of the whole aircraft, which is very uneconomical. In addition, ordinary third-generation fighter jets are still If the performance of the engine cannot be fully utilized, the detected data will not be too accurate.

So, the problem comes back.

What kind of fighter is suitable for carrying the Warhawk I engine?

Liu Jiankun immediately thought of a model, and couldn't help grinning, "j-20? If it's j-20, it's suitable. The j-20 is also being developed and perfected. The biggest limitation is the engine."

"If you can manufacture a few Warhawk 20s and directly assemble them on the J-[-]..."

"Is it not bad to do the test together?"

The j-20 is currently the most high-end domestic fighter, but its technology is not stable enough, and it has been in the process of continuous improvement. The most restricted thing is the engine performance, because the progress of the Kunlun engine is slow, and the theoretical performance cannot keep up. It has been demonstrated before. There are several plans, including spending a lot of money to import top-level engines from country e.

Later, after the Warhawk series engines came out, a plan was approved, which was to adapt the Warhawk II to the J-20 fighter.

The theoretical performance of the Warhawk II engine can just support the performance requirements of the j-20.

Now the development speed of the Zhanying-20 engine is faster, and it is also a good choice to adapt it to the J-[-] for testing.

The j-20 is a very advanced fighter, basically it can be said that it is close to the performance of the fifth generation aircraft.

"If the Zhanying-20 engine is adapted first, can the parameters be adjusted upwards to make the J-[-] truly a fifth-generation aircraft?"

"Such a j-20 may equal the f-35, right?"

"It's just that even if it is adapted to the J-20, the performance of the Zhanying-[-] engine still overflows..."

"It's not good to be too advanced!"

Liu Jiankun thought with a wry smile. He glanced at the evaluation report of the test department on the test flight of the Fighting Eagle [-]. Almost all of it was full of admiration, and he didn't even find a single problem. "Academician Zhao is really right. , It is true that there is no need to continue to improve, and you can enter the next stage.”

……

When Liu Jiankun was checking the research and development issues of the J-20 fighter jet, the assistant reported that Zhang Gangchuan was visiting. He immediately put down the documents in his hand and went to the small conference room to receive Zhang Gangchuan with doubts.

Seeing Liu Jiankun, Zhang Gangchuan immediately smiled and said, "Mr. Liu, you are really busy. I heard that you are coming back, so I will be here right away."

"What's the matter?" Liu Jiankun asked bluntly.

Zhang Gangchuan said, "That's right. Let me report the good news first. The Warhawk II engine has successfully completed the start-up test."

"Now we have been able to successfully start the engine and let the engine run normally. After running for 10 minutes, we can shut down normally."

"En, um." Liu Jiankun nodded listening.

If he hadn't seen the success of the Warhawk I, he would have asked a few more questions, because it is already quite remarkable to be able to operate successfully in a short period of time.

but……

Liu Jiankun looked at Zhang Gangchuan, and the meaning in his eyes was almost the same, "Go ahead and I'll listen."

Zhang Gangchuan was a little surprised by Liu Jiankun's attitude, so he continued, "According to this speed, we can make the Fighting Eagle II engine meet the flight test standards within ten months."

"This really depends on Kunlun's experience. I remember that a few years ago, it took almost two years from the finalization of the design of Kunlun to the application for test flight..."

He began to recall the past.

When he realized that he had said a lot and Liu Jiankun hadn't said anything, Zhang Gangchuan was also a little embarrassed. He changed the subject and continued, "I'm here this time. The first thing is to report the results."

"Secondly, it also reflects a problem. Our Kunlun team is seriously short of manpower, especially professional technicians."

"Mr. Liu, you also know that the War Eagle series was developed by a team led by Academician Zhao. There are many design principles in it that we haven't fully understood. It is not easy to correct and solve problems."

"So, we were wondering if we could let the Warhawk team come to our side. Of course, Academician Zhao, don't force it, just give some pointers. Other personnel have participated in the design of the Warhawk series engines. Coming here will definitely help us a lot.”

Liu Jiankun wanted to say something after hearing this.

Zhang Gangchuan hurriedly continued, "Listen to me. That's right. The Zhanying-[-] engine is too advanced. To put it bluntly, it's a bit out of touch with reality. There will definitely be many problems in the process of development and improvement."

"With our two groups, the research and development speed of the second type will be very fast. If we have the experience of the second type as a foundation, and then develop and improve the design of the higher-end type one, I think it will definitely help a lot..."

"So, I think we can suspend the Warhawk-[-] engine project and focus on focusing on the Type-[-] engine first."

After Zhang Gangchuan finished speaking, he looked at Liu Jiankun very seriously. He had made up his mind several times, and I believe that Liu Jiankun would definitely think about it without directly agreeing.