Wang Xiaomo finally did not resist the temptation, and decided to follow Chang Haonan's suggestion and fight according to the 9910 project.

In this way, many things that were not in a hurry become urgent.

"Comrade Xiaochang, since you want to take the 9910 project as the goal, then the preliminary project demonstration on your side ......"

"You can rest assured that after the bidding is over, I can start construction directly in Jinling, and the calculated results will be directly taken to the wind tunnel of Fucheng 29 base for testing, so that the two sides can be close to synchronous."

Chang Haonan is naturally prepared.

He'd done this kind of multitasking in parallel in the limit time, and he had done it more than once before, and he was now familiar with it.

What's more, from the perspective of the aviation department, the installation of the wedge tail is not too complicated compared to the installation of the disc, and it does not require him to frequently dock with the wind tunnel tester.

In fact, in the previous life, it took about 20 months from the establishment of the Air Police 200 project to the first flight, and if it were not for the unexpected air crash, the service time would have been earlier.

Although that was done before the project was established, there was already a lot of technical accumulation.

But now Chang Haonan has more hole cards in his hand, which is completely true.

After all, it was just a demonstration before the start of the project, and it was not a big job, so it only took a few people half a night to set the overall direction of the matter.

For today's Chang Haonan, this kind of thing has been familiar with the road, and there is no need for the help of the system at all, especially the data of Yun 8 itself has been digitally entered by Liang Shaoxiu and others from the 172 factory, and it can be called directly, as long as the two parts of the T-shaped antenna and the tail fin are added, the actual workload is not too much.

What's more, although Xu Yang and the engineers from the 14th Institute of Electrical Science and Technology have not studied aircraft design, they have learned algorithms to some extent, and they can still help some.

The most time-consuming part is estimated to wait for the results, and the current computer performance is really not keeping up with the demand.

So in the next period of time, it is just right to see the stitches and insert the needle, and the aerodynamic and structural analysis of the wedge-tail early warning aircraft has been done-

Although the need for hardware performance has been reduced with some tricks when designing the pod, so there is no insurmountable obstacle to the trial production process, the electronic interference pod is a new thing for the 14 Institute after all, and the packaging technology borrowed from the seized pod also needs to be adapted, so in the case that the basic design has been completed, the two engineering prototypes, one large and one small, are still expected to take about half a month to manufacture.

This is also because there is no need to consider external pneumatic modification and other issues in the prototype stage, which reduces a lot of unnecessary man-hours, otherwise it will take longer.

……

In short, when a few days later, Chang Haonan handed over the demonstration report with numerical calculations and data from several wind tunnel tests to Wang Xiaomo, who had not even had time to leave Jinling, the first thing the latter subconsciously asked was:

"Did you already have your report ready?"

In this regard, Chang Haonan naturally told the truth:

"That's not true, although I've been working on this T-shaped antenna for a while, but it was really after talking to you that day that I really started to analyze it."

"But that's just the time...... Ten days? ”

Wang Xiaomo looked at the calendar book next to him:

"No, nine and a half days of hard work, how can the data in this report be so detailed? I've worked with people from the Aviation Industry Corporation before, and I've never done it so fast. ”

"Far from it, at the beginning of last year, when I changed the No. 713 electronic equipment testing machine, I waited for a month just to blow a wind tunnel, which is still the efficiency I took out after I asked Director Ding many times."

Therefore, looking at the old academician with an expression of "either you are tricking me or they are tricking me" in front of him, Chang Haonan felt that he needed to explain to the former colleagues (and future colleagues) of the 29th base who had never met:

"Academician Wang, that's the case, if it is a complete wind tunnel test for a new model of aircraft, it will indeed take several months or even years, even if it is a model like the 713 aircraft with little modification, a month is normal."

"But after all, we are just an argument now, and because of the support of my calculation data, we can also select the wind tunnel test conditions more accurately, and do not need to slowly approach in a large range as in the past, in the past, 100 hours of wind tunnel, there may be 90 hours of debugging, now it may only take 10 hours of debugging, and the efficiency is naturally high."

The No. 713 verification machine mentioned by the two just now is an equipment verification platform improved from the Y-7 and affiliated to the 38th Institute of Electrical Technology.

In terms of fame, it is far inferior to the No. 079 Yun-8 verification platform that later verified the radar equipment of the J-10 and J-11, and it is not as good as the No. 769 Tu-204 verification platform that later verified the J-20, but it is the beginning of Huaxia in this field.

In fact, Chang Haonan came over today, in addition to handing over the argumentation report to Wang Xiaomo, another purpose was to borrow this plane.

And it's for cutting in line!

"So that's it?"

Although Wang Xiaomo, who knew that the interlaced lines were like mountains, felt a little magical, he did not continue to ask.

But he quickly realized a problem.

It's a loss!

"Wait, then according to what you say, the original 100-hour wind tunnel can now be blown in 20 hours, so in the contract we signed before, is the part of the equipment cost and man-hour cost ......?"

Chang Haonan naturally can't let go of this kind of problem:

"Academician Wang, the power group has a big business here, and you definitely don't care if the hundreds of thousands of yuan are not ......."

On the one hand, there is no reason for the contract to be signed, and on the other hand, the advance payment of the power technology group has been divided by several units and individuals involved in the work.

However, Wang Xiaomo didn't really think that he could get the money back, and after a few jokes with Chang Haonan, he paid attention to the report in his hand:

"The writing is very skillful, it doesn't look like it's the first time to write......

"I've won awards, I've seen a lot of them before, and when I start writing by myself, I'll get started faster......"

Chang Haonan in the previous life did not dare to say anything else, the hard work of writing a report highlights a rich experience, although it is now more than 20 years ago, but the style of the aviation industry system has not changed much, and it can be seamlessly connected.

Then he followed Wang Xiaomo's progress in reading the report and began to introduce the contents inside.

"The T-shaped antenna will increase the cruise resistance of the whole aircraft by about 9%, and shift the focus of the whole aircraft back by about 2.5% of the average aerodynamic chord, but this change can be solved by adjusting the distribution of equipment in the aircraft, combined with the 2% resistance brought by the tail fin, the economic cruising speed of the wedge-tail layout AWACS aircraft will be reduced by about 40-50km/h compared with the Y-8 prototype."

"In terms of flight stability, both the T-antenna and the pelvic fin itself will enhance the heading stability of the aircraft, but the former will also destroy the contribution of the tail to the heading stability, in general, after the transformation, the derivatives of the yaw moment coefficient and the lateral force coefficient about the sideslip angle are reduced by 0.009 and increased by 0.0005, respectively, indicating that under the action of appropriate pelvic fins, the heading stability of the whole aircraft reaches an acceptable state......"

Although Wang Xiaomo did not specialize in aircraft design, he quickly understood the full content of the report based on data charts and Chang Haonan's explanation.

"With this report, the probability of the project being approved will increase a lot."

The old academician closed the report with a relieved face, and then put it back in the briefcase with the other materials.

Chang Haonan realized that it was time to borrow the plane:

"Academician Wang, I have a reluctant invitation to come this time......"

Wang Xiaomo, who is in a good mood, is unguarded:

"You say, as long as I can do it personally and does not violate the principles, I can mention it."

"Ahem......"

Chang Haonan is also welcome:

"We hope to borrow the No. 713 electronic equipment verification machine from the 38th Institute, and we will use it about next week."

“……”

Wang Xiaomo's action of sorting out the briefcase suddenly stopped.

(End of chapter)