Since the test environment was artificially created by an airplane, there was no need to go through the long and luck-dependent process of "finding ice" as before, and it was possible to fly directly to the preset test airspace.

Therefore, it didn't take long for Colombo to see the H-6AIT in low-speed level flight in front of the left through the porthole.

Admittedly, as an Italian, this is a very novel experience.

He knew that he would no longer be able to see anything through the portholes when the experiment began, and after a moment of struggle, he decided that at least he couldn't fish the whole time, so he moved behind Lorenzo's seat with Valette.

From their position, the laptop screen can also be seen.

The picture is divided into six parts.

After a brief identification, Colombo identified the top two images showing the ice thickness scale on the leading edge of the left and right wings, the middle two images showing the full view of the main wings on both sides, and the bottom two images showing the flat-tail leading edge de-icing sleeve and flat-tail leading edge wingtips.

Apparently, a total of 6 cameras were installed outside the aircraft, aiming at the most important 6 positions.

"Are they so confident in their predictions?"

Colombo thought to himself as he looked at the high-definition surveillance footage for this era.

Since he finally chose to board this plane, it shows that he is still confident in the anti-icing system designed by Chang Haonan.

But the level of the anti-icing system is one thing, and it is another thing to accurately calculate the location and even the shape of the ice.

If you have to make an analogy, the former is equivalent to deboning with a machete, although the difficulty is not small, but it is still in the category that ordinary people can accept.

And the latter is equivalent to carving radish flowers with the Qinglong Yanyue Knife, which is already a skill beyond the mundane.

Therefore, Colombo's original expectation was that the Chinese would play some visual tricks, and anyway, during the icing test, they would not be able to see the outside directly through the side window, as long as the camera was a little confused and the angle was a little worse, it was enough to interfere with the visual effect.

Anyway, as long as the plane has gone through the whole process, they can't say anything.

As a former project dog, Colombo himself has not drawn cakes and can understand this behavior of injecting a little water.

Moreover, cooperation with Huaxia is the foundation of his life at Finmecanica Group, and he even thought about how to avoid the important things in the report last night, and finally came to the conclusion that he should agree to sign the cooperation agreement.

However, look at the current posture......

People don't seem to be ready to play any tricks, but want to come for real?

……

Colombo's mind was a little confused, on the one hand, he didn't sleep last night and thought out that all the contents of the report he came up with in advance might be invalidated, and on the other hand, he was also a little worried about whether these Chinese people would be overconfident.

This kind of clear picture, if he gets rid of it, he can't save it by himself using the Spring and Autumn brushwork alone.

A cranky Colombo looked up, trying to distract himself by looking left and right.

And this action made him collide with the gaze of Valette next to him.

The latter had never been tested with natural icing, and his expression revealed a little nervousness.

Several random engineers from Huaxia were doing the final checks before the icing test, and they had rehearsed countless times over the course of a few days, moving quickly and working well with each other.

For a while, in addition to the humming sound of the propeller turning outside, only the sound of a short Chinese password was left in the cabin.

"The cloud droplet spectrum probe, the two-dimensional cloud particle probe, and the two-dimensional precipitation particle probe are working normally!"

"The atmospheric temperature probe, the speed sensor, and the external picture monitoring system are in normal condition!"

"AIT aircraft report, ready for fogging operations!"

“……”

Colombo could not understand Chinese, and due to the capacity of the plane, there was no interpreter to keep up, but the calm voices of these people eased his worries a lot.

Suddenly, a radio conversation that was going on in the cockpit sounded synchronously in the cabin announcement.

Unlike before, this time in English.

Several engineers, who were still walking around, also returned to their seats as fast as they could, and fastened their seat belts.

"Prepare to enter an artificial supercooled water mist environment!"

"Countdown 3...... 2…… 1……”

Before Colombo could do a good job of psychological construction, the whole plane rushed straight into the whole white mist!

According to rough estimates, for every 100 meters of altitude gain, the temperature will drop by 0.6°C.

At an altitude of 4,500 meters in February, the temperature is -30°C!

At such low temperatures, the water droplets that are broken by the high-pressure gas at the nozzle enter the supercooling state almost as soon as they enter the atmosphere.

Supercooled water is still liquid, but it is in a substable state, and when subjected to certain external disturbances, it will freeze rapidly.

For example, the impact of wings at medium speeds.

"The average diameter of the water droplets is 404.5 microns, the air temperature is -31.7 °C, and the airspeed is 110 meters per second, which meets the conditions of the SLD test!"

The Huaxia engineer in front specially reported the situation in English.

The data could be clearly seen on the screen of the other computer in front of him.

True SLD conditions indeed!

I don't know if it's due to psychological effects, Colombo even heard the click-rattle sound of the plane's skin when it froze.

The cabin glass was covered with a thin layer of ice at an almost unprecedented rate, blocking everyone's view.

He had to refocus his gaze on the laptop screens in the front row.

Suddenly, the Italian felt his right hand being caught.

It's Valette sitting next to her.

At this time, her eyes were closed tightly, and her red lips were slightly pursed, obviously nervous because of the overly stimulating effect of the show.

"Huh...... Woman. ”

Colombo shook his head, but he didn't shake it off.

At this moment, a French sentence from the front broke the warm atmosphere in this weirdness.

"Ice started accumulating so soon?"

Colombo, who was awakened, hurriedly concentrated, only to find that in the ten seconds that he had just been distracted, about 10 mm of ice had appeared on the leading edge of the main wing!

"No wonder the two planes had an accident before they barely had time to react......"

Lorenzo, who was sitting in the front, muttered to himself as he looked at the thickness of the ice, which was growing almost at a rate visible to the naked eye.

Although the results of the American Eagle investigation have come out, the impact of the cold words on the paper and the shocking pictures in front of you are not at all on the same level.

Colombo took out the simulated icing diagram that Chang Haonan had given them a few days ago from the inside pocket of his coat with his free left hand.

Although the black-and-white prints are not particularly clear, the edges of the ice can still be discerned by the grayscale.

Lorenzo also held up his share of the results to the computer.

As time passed, not only the leading edge of the wing, but also the upper and lower surfaces of the wing gradually began to appear bright ice-

An irregularly shaped type of ice that poses a greater hazard to flight safety.

The icing is indeed further back and more evenly distributed across the upper and lower surfaces.

However, from the outline, it is quite different from the simulation results on paper.

"Hoo ......"

Lorenzo and Colombo breathed a sigh of relief at the same time.

There is no schadenfreude.

Rather, it is more realistic to predict only a part of the results.

Of course, even this is quite impressive, and the simulation results can directly guide the specific design of the de-icing system.

"No wonder the Chinese people are so bold......"

Colombo thought as he prepared to fold the paper again.

"Wait......"

Lorenzo's eyes widened suddenly.

I saw that on the surface of the original bright ice, there was a loose, white and opaque frost ice again.

Such a change made Colombo, who was already relieved, hold himself back.

Because these new frost ices seem to be growing towards a shape similar to the results of the simulation.

"No......"

He lifted the piece of paper again, and shook Vallet's arm beside him:

"Anne, Anne? Look ahead! ”

The latter was already pale at this time, but he slowly opened his eyes after hearing his name called.

Then I saw Colombo and Lorenzo stunned.

"Is it really exactly the same?"

“C`est incroyable…… Rocambolesque！ ”

At this time, the pilot's voice also sounded in the cabin:

"The icing time is 500 seconds, the lift of the aircraft is reduced by more than 20%, turn on the de-icing system!"

……

When the group stepped off the plane, Chang Haonan noticed that Colombo and Valette were holding hands.

But it's normal to think about it, people have a faster heartbeat and secrete more adrenaline in fear situations.

If there is a person of the opposite sex next to you at this time, it is easy to be mistaken by your own consciousness for a heartbeat feeling.

This is also why young couples love to watch horror movies together.

And the wave of icing tests just now is much more exciting than horror movies.

Besides, an Italian and a Frenchman, huh.

Reasonable, very reasonable.

Lorenzo, who was behind them, had a completely different style of painting, holding a notebook and a pen in his hand, recording something quickly.

While remembering, he excitedly said to himself:

"It's too strong...... That's just too strong! ”

(End of chapter)