Chapter 867

Fan Tianlei left, leaving Jiang Yanhai alone with a big box.

Back in his dormitory, Jiang Yanhai was thinking about things between himself and Li ruobai all the way. The problem is that Jiang Yanhai is sure he remembers all things. He remembers all the experiences between him and Li ruobai, including the agreement between them.

The problem is, I really didn't think clearly what fan Tianlei was talking about.

Back in his dormitory, Jiang Yanhai opened the box. When he took out the things inside, Jiang Yanhai immediately fell in love with it. It was an exquisite model aircraft.

J20 model, and this thing is definitely made by experts. This should not be the model of two or three hundred yuan on the Internet. After being scanned by the intermediate scanning system, its large parts can be removed!

Including the engine, if you like, all can be disassembled into parts, and its interior is composed of parts.

Of course, it can't really be made of the same materials as J20. Except for the three tires and cockpit, all other parts should be made of alloy. Even the place where the deceleration umbrella is stored at the tail can be opened. The umbrella bag inside is actually made of cloth.

This thing is so exquisite that it's impossible to buy it without thousands of yuan.

But... What are you doing with this? Although the first wife aircraft model is quite good, I can touch the real first wife at any time!

"Er Dan, can you search what the chief of staff means?" Jiang Yanhai asked in his mind with some doubts. He really didn't think of it.

"There is no record in the database. Can you search the Internet results?" Erdan asked immediately.

"Yes." Jiang Yanhai agreed directly.

About 30 seconds later, Er Dan said, "after my search on the Internet, the chief of staff mentioned your love. I searched for things taboo in love. What is mentioned is that you can't forget some important festivals, such as Valentine's day, Tanabata and the woman's birthday..."

"Stop! What's the date today?" Jiang Yanhai understood instantly when he heard the word birthday.

"Today is May 30 of the Gregorian calendar." Er Dan immediately gave the exact time.

When Jiang Yanhai heard this, he immediately understood that Li ruobai's birthday was June 3. There are really a few days left.

If fan Tianlei hadn't come, Jiang Yanhai really didn't remember this. He just remembered to do research recently, and Li ruobai was also doing research. She never told Jiang Yanhai about these things.

Speaking of this, Jiang Yanhai thought about it. It seems that he hasn't had any valentine's day.

Looking at this model aircraft, it is obvious that fan Tianlei did not give it to him.

This is for him to give as a gift.

Well... He doesn't know whether to say the chief of staff is good or bad.

After thinking about it, I still can't return it. Even if I don't give it to girls, it's good to keep it in the dormitory.

However, it is less than 7 hours before the end of the 150 hour long start-up test run.

This is obviously the first priority at present. So far, Jiang Yanhai has not received a call from Professor Zhao. At this time, no news is the best news!

Jiang Yanhai waited quietly for the last seven hours while studying.

When the sound of two eggs sounded in his mind, he did not receive a call from Professor Zhao, but Jiang Yanhai was not in a hurry because there was a detailed inspection process. Even after the final test, it was estimated that it would take at least four or five hours for him to receive the results.

Sure enough, until more than 9 p.m., the fifth hour after the 150 hour long test run, Jiang Yanhai received a call from Professor Zhao.

"Xiaojiang!"

"It's me, Professor Zhao. What's the result?" Jiang Yanhai asked immediately.

"The results are excellent! At present, after 150 hours of long-time test run, there are no problems with the engine body, structural problems, especially the current performance display of vulnerable parts and load-bearing parts, which are hardly affected by operation!"

"This result is very amazing! Although it is said that the long-term continuous test run on the ground can not completely compare with the real air combat environment, this test result has exceeded all the engine test results we know."

"If the structural strength of other parts can keep up, the service life of this engine can reach at least 6000 to 8000 hours according to my estimation! I can't guarantee whether it can exceed the service life of F119 for more than 8000 hours, but this is the first case in our country!"

When he said this, Professor Zhao was obviously very excited, because he knew what it meant, which meant that China was finally no longer ridiculed by the West in the engine field!

And left them far behind!

"Hmm! Great! Professor Zhao, you should pay attention to rest. Next, I'm afraid you'll have to start the long-term test run of the overall test run. I'm afraid it will take at least 3000 hours." Jiang Yanhai said seriously.

"Don't worry, it's up to us. In addition, we're ready to start the destructive test at the same time." Professor Zhao said simply.

"No problem. It's no big deal to produce more sets. If the test room is not enough, you can find other research institutes with similar capabilities to carry out different degrees of test run at the same time." Jiang Yanhai added.

"Well, our research institute doesn't have a high-altitude test bench. It may be necessary to contact the Taihang side. You need to contact the Taihang side," Professor Zhao added.

"I see." Jiang Yanhai nodded and directly agreed.

The high altitude test bench is to simulate the altitude and speed environmental conditions of the aircraft flying at high altitude on the ground. It also needs to simulate the steady flight state of the aircraft and various distorted air flow states at the inlet of the fighter engine in the air.

The airflow with different velocity and temperature forms relative motion with the stationary engine to simulate the high-altitude environment or rush to the theater at high speed; Or fly at low altitude and high speed through the enemy's air defense position; Or wait for Mach number to climb and occupy the commanding height of air combat

Different "pressure distortion" air intake devices, through system equipment, artificially establish various air working environments of the engine in the whole flight envelope, and assess and identify the design index and combat technical performance of the engine.

There are very few such high-altitude test stands in China, and they are only available to the National Research Institute.

Jiang Yanhai and his team have already worked out the engine. They must go to the test bench for various tests, and these professors Zhao obviously have no way to contact, only Jiang Yanhai himself.