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

Back in his dormitory, Jiang Yanhai was thinking about the things between himself and Li Ruobai all the way, the problem was that Jiang Yanhai was sure that he remembered everything, and he remembered everything that happened between him and Li Ruobai, including the agreement between them.

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

Back in his dormitory, Jiang Yanhai opened the box, and when he took out the contents of it, Jiang Yanhai immediately liked it, this is a delicate model airplane.

J20 model, and this thing is definitely from the hands of experts, this should not be the kind of model of two or three hundred dollars on the Internet, the intermediate scanning system scanned it, and its whole body of large parts can be removed!

Including the engine, if you want, everything can be disassembled into parts, and it is made up of parts inside.

Of course, it can't really be the same material as the J20, except for the three tires and the cockpit, the others should all be alloy parts, and even the tail storage parachute can be opened, and the umbrella bag inside is really made of cloth.

This thing is quite exquisite, and it is impossible to buy it without a few thousand dollars.

But...... What do you do with this? Although this big wife model is not bad, my brother is a person who can touch the real big wife at any time!

"Erdan, can you retrieve what the Chief of Staff means?" Jiang Yanhai asked in his mind with some doubts, he really didn't expect it.

"There is no record in the database, whether the Internet results can be searched." Erdan immediately asked.

"Yes." Jiang Yanhai directly agreed.

About 30 seconds later, Erdan spoke: "After my search on the Internet, the chief of staff mentioned your love, I searched for things that are taboo in love, and it mentioned that the probability is relatively high is that you can't forget some important festivals, such as Valentine's Day, Tanabata, and the woman's birthday......"

"Stop! What day is it? When Jiang Yanhai heard the word birthday, he instantly understood something.

"Today is May 30 in the Gregorian calendar." Erdan immediately gave the exact time.

When Jiang Yanhai heard this, he immediately understood that Li Ruobai's birthday was June 3, and there were indeed a few days left.

If it weren't for Fan Tianlei coming over, Jiang Yanhai really didn't remember this, he just remembered to do research recently, and Li Ruobai was also doing research over there, and she never told Jiang Yanhai about these things.

Speaking of this, Jiang Yanhai thought about it, what kind of Valentine's Day or something, it seems that he has never had it.

Looking at this model aircraft, this was obviously not given to him by Fan Tianlei.

It was for him to give it out as a gift.

This...... He didn't even know whether to say that the chief of staff was good or bad.

After thinking about it, this thing still can't be returned, even if it doesn't give it to the girl, it's good to keep it in the dormitory.

However, it is less than 7 hours left before the 150-hour long start-up test is over.

This matter is obviously the first priority at the moment, so far Jiang Yanhai has not received a call from Professor Zhao, at this time, no news is the best news!

Jiang Yanhai studied while quietly waiting for the last 7 hours to pass.

When the sound of Erdan's prompt sounded in his mind, he didn't receive a call from Professor Zhao, but Jiang Yanhai was not in a hurry, because there was a detailed inspection process for this thing, and even if the final test was over, it was estimated that it would take him at least four or five hours to receive the results.

Sure enough, it wasn't until more than 9 o'clock in the evening, that is, five hours after the end of the 150-hour long test run, that Jiang Yanhai received a call from Professor Zhao.

"Xiao Jiang!"

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

"The results were fantastic! At present, at the end of the long test run of up to 150 hours, there are no problems with the body, structural problems, especially the current performance of wearing parts and load-bearing parts, they have hardly been affected by the operation! ”

"The results are amazing! Although the long-term continuous test on the ground cannot be completely compared to the real air combat environment, this test result has surpassed all the engine test results we know. ”

"If its other components, structural strength, etc., can keep up, then the life of this engine can reach at least 6,000 to 8,000 hours according to my estimates! Whether it can surpass the life of F119 for more than 8,000 hours, I can't guarantee, but this is the first case in our country! ”

When he said this, Professor Zhao's tone was obviously extremely excited, because he knew very well what it meant, which meant that China was finally no longer ridiculed by the West in the field of engines!

And left them far behind!

"Hmmm! That's great! Professor Zhao, you should pay attention to rest, and next, I am afraid that you will be troubled to carry out the long-term test task of the overall commissioning, I am afraid that it will take at least 3,000 hours. Jiang Yanhai said seriously.

"Don't worry, we'll take care of it, and we're ready to start the destructive test run at the same time." Professor Zhao said dryly.

"No problem, it's a big deal to produce a few more, if the test workshop is not enough, you can find other research institutes with similar capabilities to carry out different degrees of test runs at the same time." Jiang Yanhai added.

"Well, our research institute doesn't have a high-altitude test bench, this may be in contact with Taihang, and you need to contact this." Professor Zhao added.

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

The high-altitude test bench is to simulate the environmental conditions of the altitude and speed of the aircraft flying at high altitude on the ground, and also need to simulate the smooth flight state of the aircraft and the flow state of various distorted airflow at the entrance of the fighter engine in the air.

Different flow velocities and temperatures form relative motion with stationary engines, simulating high-altitude environments or high-altitude high-speed rush to the war zone; or low-altitude high-speed flight through enemy air defense positions; Or wait for the Mach number to climb and occupy the commanding heights of aerial dogfighting......

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

The number of such difficult high-altitude test benches in China is very small, and this is only available in national research institutes.

Jiang Yanhai and their engines have already been built, and they must go to this test bench for various tests, and these Professor Zhao obviously have no way to contact them, only Jiang Yanhai himself has contacted.