The Military-industrial Scientific Research System of the Academic Master Chapter 159

Chapter 159 Natural Freezing Test

“Ahem—”

Even though Chang Haonan was quite thick-skinned, he couldn't bear the three burning glances, so he quickly continued what Liang Shaoxiu had just said.

“I'm afraid that the FAA approval of Xinzhou 60 will be put on hold. The 603 Institute is now in contact with a European company.”

“As for the airworthiness certification work... with the participation of European companies, we can strive for EASA's airworthiness certificate. But as I said just now, when it comes to standards, we don't rely on others for anything, so we must still focus on ourselves.”

As someone who has indirectly participated in the design of MA60, he will still have a clear idea of the future direction of this project.

In 1997, it failed to get airworthiness certification from the FAA. After that, it could only be used in China and a few third world countries for many years. In the end, my grandma didn't care about it, and my uncle didn't love it. It was rejected even if it was used as a patrol aircraft by the Coast Guard - like this The plot that happened on the original timeline cannot be repeated in this plane.

Originally, Chang Haonan had been worrying about what kind of entry point he would use to make today's China Aviation Industry give up its dog-licking behavior towards the FAA. However, during the previous turbojet 14 test, that phone call came from the Commission of Science, Technology and Industry for National Defense. It seems to have solved the problem for him.

He heard Du Yishan say that the focus of the Shanghai Aircraft Manufacturing Plant's production of MD90 aircraft has changed from "accepting and learning the full set of American aviation industry standards" to "digesting and absorbing key technologies and accumulating experience in the final assembly and manufacturing of large civil aviation aircraft."

Considering that AgustaWestland has begun negotiating specific model cooperation matters with China Aviation Technology, the future development focus of the M60 should shift to Europe.

“That's good, that's right!”

Lin Guofan is excited again. He is now as enthusiastic about formulating independent standards as Chang Haonan:

"Standards can only be developed and improved through continuous practice. After all, the Y-8 is a military transport aircraft. Many of its design orientations are different from those of civil aviation. It is impossible to completely transfer its test flight experience to other aircraft. Not conducive to further promotion.”

“So it would be great if we could have a serious civilian model like the MA60.”

In fact, what he is talking about is the issue of military standards and civilian standards. Although the two can be the same in many places, there will be some differences after all.

For example, military aircraft can accept higher performance at the expense of certain reliability, and the indicators of environmental protection, emissions, and economy are not strict.

The civilian model is completely different.

“Anyway, let's start with the natural icing test.”

Chang Haonan tapped the table lightly with the pen in his hand, and finally brought back the thoughts that several people had just let go:

“To form a set of universal standards for the entire aircraft that meets the requirements for all models is completely different from conducting icing tests on only the wing part of a single model, and the workload must be at least one order of magnitude greater.”

“We have to solve the two problems of 'what to test' and 'how to test' at the same time, and at the same time, we must try our best to provide some guiding data and opinions on anti-icing work.”

Once we talk about practical issues, we need to think more rigorously, and we definitely cannot talk as freely as when we were just thinking about the future.

The four people began to think about the next plan from their own professional perspectives.

Actually, Chang Haonan had a bigger ambition that he had not yet said -

In the mid-to-late 1990s, Europe and the United States experienced a series of air crashes caused by ice accumulation, which even affected public confidence in the civil aviation industry.

Especially Europe.

This is a critical time period.

The newly formed European Union is not the brain-dead organization it was more than 20 years ago. European countries, including the United Kingdom, are still somewhat conceited and unwilling to follow the lead of the United States on the other side of the ocean.

In this matter, China and Europe have common interests.

So he wants to use the natural icing test, an airworthiness certification project that has a great impact on flight safety, as a breakthrough to try to promote comprehensive equivalence and mutual recognition of the two sets of standards of CAAC and EASA through AgustaWestland.

If successful, it means that aircraft models that obtain airworthiness certificates in China can be sold directly to Europe in the future.

Taking into account the demonstration effect of EASA, probably no one will have to worry about sales in places other than North America.

It can be regarded as a milestone development for China Aviation Industry.

After ten minutes of careful consideration, Lin Guofan, who regained his composure, spoke first:

“I think we still need to determine a basic work process according to the priority of things.”

"fair enough."

Liang Shaoxiu said and took out a piece of paper from the side:

“We have now identified several main factors that affect aircraft ice accumulation, so the next step is to determine the airspace and atmospheric conditions requirements for natural icing test flights, such as temperature, water droplet diameter and liquid water content, based on this. "

Chang Haonan then continued to add:

"Regarding this, it is best for Professor Lin to study the distribution of ice accumulation in our country at different time periods and at different heights in advance, compare it with foreign climate conditions, and set several different anti-icing levels, otherwise there will be nothing. Isn't it a joke if we set standards and the test cannot be completed in our own country?”

In fact, the reason why natural icing experiments in later generations are almost monopolized by the FAA is that, in addition to their earlier research in this area, another big reason is that the natural environment is suitable and the weather forecast is accurate.

It is very difficult to prevent the aircraft from accumulating ice at all.

But it is more difficult to get the aircraft to accurately accumulate ice according to preset conditions.

It can't be too cold or too hot, it can't be too dry or too humid, the air flow can't be too strong or too weak…

In short, the Great Lakes region is basically the place with the highest ice accumulation frequency in the world.

This is certainly not a good thing for flight safety, but it is a treasure trove for flight testing.

A test that would take months to complete elsewhere could be completed in a week at the FAA.

As far as the situation in China is concerned, there is definitely no such a chosen place as the Great Lakes region, but it is definitely not impossible to find an airspace that meets the conditions.

If you don't have enough talent, you have to work hard to make it happen.

Then we can only rely on meteorologists to make accurate forecasts.

“Don't worry, my research team has been tracking the climate conditions in northwest China for nearly 20 years, and we still have some experience in these aspects.”

Lin Guofan waved his hand rather boldly and took over the job.

“Then, our 182 factory, and the 603 factory that may join in the future, can be responsible for designing a standardized aircraft parameter measurement system...”

“I could continue my research on passive de-icing methods…”

“Oh, by the way, I almost forgot the most important thing. The application for the natural freezing test project must be submitted as soon as possible, otherwise by the end of the year, all projects will be busy being reviewed, and it may be postponed until next year.”

Chang Haonan reminded Liang Shaoxiu next to him.

"no problem."

The latter nodded:

“I will start preparations after I go back today and try to get the project completed before mid-December!”

“That's it, let's go back and complete the preliminary preparations first. This matter cannot be rushed. It should require the cooperation of many brother units later.”

“The meeting is dismissed!”

(End of this chapter)

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