Although the formation when the plane took off has already tightened the scene, the heartstrings of all the viewers in each live broadcast room.

But in fact, everyone knows very well that whether it is the huge roar of the engine just now or the large amount of white smoke at the tail of the plane, all this is just the beginning.

This time Xiao Ning and Red Bull collaborated on the Mira Mountain Tunnel Crossing Challenge. The focus of the difficulty lies in the entire process of the plane taking off and entering the tunnel.

Although this whole process is very difficult, the most difficult part is actually the process when the plane just enters the tunnel and finally flies out through the tunnel.

Although after the final discussion between Xiao Ning and the Red Bull team, the challenge time was set in the morning when the temperature difference between the inside and outside of the tunnel and the air pressure difference were relatively small, but even so, Xiao Ning, who was controlling the aerobatic aircraft, still had to face the challenge when the aircraft just entered the tunnel.

changes in air pressure.

At this time, the front half of the plane had just entered the tunnel. The staff present and many viewers who had gotten up early in the morning to watch the live broadcast held their breath.

The airplane, a product invented at the beginning of the last century, has never changed its principle of flying in the sky from the first airplane "Aviator 1" built by a pair of brothers until now.<

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The reason why an aircraft can fly is because the upper and lower parts of the aircraft wing receive different pressures in the air. The design of the wings allows the air above the wing surface to flow faster and receive less pressure, while the air below the wing surface

When the pressure is greater than the pressure above the wings, the aircraft will obtain the lift generated by the difference in pressure on both sides and fly upward.

Under normal circumstances, if an aircraft flying outside suddenly enters an upper closed place such as a tunnel and flies almost close to the ground, the additional lift generated by the ground effect will inevitably increase the lift of the aircraft itself.

At this time, when the front half of the aerobatic plane driven by Xiao Ning had just entered the tunnel, everyone could clearly see that the plane had a slight upward momentum to increase its height.

If Xiao Ning, as the pilot, does nothing under this situation, then the plane will directly hit the roof of the tunnel due to the extra lift.

What he has to do now is to adjust the details of the wing through the elevator to offset the impact of the extra lift.

The hardest part is here too.

The reason why modern aircraft can control the rise and fall is also achieved by changing the attitude of the wings to change the air flow speed on the upper and lower surfaces, thereby changing the pressure and lift.

The principle of operating the elevator to offset the excess lift is to reduce the lift in the original state of the aircraft, causing the aircraft that was originally flying to "fall" downward.

But how much will it “drop” exactly?

If you operate the elevator downward a little less, the excess lift of the aircraft that cannot offset the ground effect will still rise, which will result in a crash and death.

And if the downward amplitude is slightly more, the lift lost by the aircraft includes not only the lift generated by the ground effect but also the upward force of the aircraft itself. Then the aircraft whose lift cannot offset the gravity will fall straight towards the ground at high speed.

In such a process, especially when flying such a flexible small propeller aerobatic aircraft, properly controlling the elevator is a very detailed matter.

It's like using a not-so-thin thread to pass through the eye of the formation. It doesn't matter whether it's up or down, it has to be just right.

The barrages in various live broadcast rooms were already maxed out when Xiao Ning flew the plane towards the tunnel.

"Ning Shen is going to rush in!"

"Haren!"

"To be honest, I was a little bit awake after watching the live broadcast so early, but now I am indeed awake and my pants are wet."

"Didn't we have the ground effect in popular science before? It should have started after Ning Shen entered the cave?"

“It’s the hardest part to master the balance of lift at the beginning!”

"Take a deep breath and wait for peace of mind to succeed!"

"Don't hit it!"

"Brother, I'm really so angry now that I don't even dare to breathe."

"Holy shit! The plane tilted upward!"

"Damn it! Ningshen is starting to operate!"

"It seems! It seems to have gone down a little bit!"

"Can it be stable?"

"..."

Whether the aircraft can successfully enter the tunnel and maintain level flight is the most critical step in this challenge.

The audience in front of the live broadcast room and everyone present were extremely nervous.

At this moment, under Xiao Ning's extremely precise operation, the aerobatic aircraft that entered the tunnel started to shuttle steadily through the center of the tunnel after the process of the ground effect causing the fuselage to move upward and the elevator to offset the lift force downward!
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In addition to requiring a maximum speed of 288KM/H, this mission also requires that the average speed during the entire tunnel crossing must not be less than 250KM/H!

In order to fulfill these two requirements, Xiao Ning must ensure the highest possible speed throughout the tunnel.

After finding the balance point of the elevator operation, he did not hesitate to fly the plane and directly started to accelerate in the tunnel!

It was like a plane wrapped in a tunnel that was accelerating crazily, and the sound of the engine roaring was like detonating the entire tunnel.

"Boom!"

"Boom!"

"Boom boom boom!"

Under the photography from those fixed positions, the white smoke at the tail of the blue plane flying past these positions has been stretched into a long straight line!

The plane is accelerating crazily with an unstoppable momentum. At a height of only a few meters and an average distance of only two meters between the top and bottom of the plane, it is flying towards an endless horizon!

People at the scene were already applauding excitedly because Xiao Ning had just successfully controlled the plane under ground effect.

At this time, the viewers who were watching the challenge in various live broadcast rooms were all completely excited.

Especially when everyone hears the roar of aircraft engines in a closed environment like a tunnel!

"What a cool death-defying act! It deserves to be Ningshen! It deserves to be Red Bull!"

"This is not just risking your life! Do you know how difficult it is to do what Ning Shen just did? Not to mention the operation to overcome the ground effect when you first entered the tunnel. After completely entering the tunnel, the vortex will destroy the aircraft.

It's sucked all the way to the ground! If the lift is too high, the plane will hit the top! If the lift is too small, it will rush to the ground again! The key is to control it just right!"

"This horse riding is more exciting than a supercar blasting through a tunnel! Bang bang bang!"

"Ningshen is so handsome!"

"It's really good, my god! He's so handsome!"

"It's handsome! But it's still scary to watch! Ning Shen, the two wings are too close to the tunnel wall!"

"It only looks like two or three meters by visual inspection!"

"The speedometer displayed in the live broadcast room should be synchronized with the scene, right? The current speed has reached 220KM/H!"

"Are you experiencing delays? The speed here has reached 265KM/H!"

"At this high speed, if Ningshen's rudder is slightly tilted, I'm afraid it will directly hit the walls on both sides!"

"I'll tell you the truth! I wouldn't even dare to fly a plane like this while riding a horse or playing GTA! I really need a lot of people to be brave!"

"Look! The Red Bull guy cut the camera to Ning Shen's face!"

"Holy crap! I thought even Ning Shen would be frowning and concentrating right now! But it doesn't feel like he's nervous at all! This is so fucking unreasonable!"

"The titanium alloy heart plus the Red Bull flowing through the blood vessels throughout the body, I think it makes sense."

The Red Bull directing team cuts to the live broadcast camera built into the aircraft cabin glass.

At such a high speed, in such a situation that should make people nervous, there is indeed no expression related to the word "nervous" on Xiao Ning's face.

The reason why he can be so calm is naturally not because his heart is made of titanium alloy and the blood flowing in his body is replaced by Red Bull.

After adding points to enter the system simulation learning space, Xiao Ning has practiced the same scene thousands of times.

He has experienced too many times when he was so nervous that his calves trembled, his hand holding the direction couldn't help sweating, and his heart beat so fast.

Although Xiao Ning still feels the excitement of flying a plane through a tunnel at high speed at this time, such excitement has become extremely limited.

He has practiced so many times that he is almost numb, and he is fully capable of being as calm and rational as possible.

At this moment, Xiao Ning's gaze was steadily looking forward, and his peripheral vision was always focused on the curved concrete walls on both sides.

In order to ensure that Xiao Ning can accurately judge the position at high speed, the Red Bull team has installed white light bars on the walls on both sides of the tunnel in advance to indicate the outline. Such light bars will run through the entire tunnel.

In a closed and similar environment, especially at such high speeds, it is difficult for Xiao Ning to completely maintain the accuracy of his flight by relying entirely on the tunnel as a reference. These light strips can help him sense the relationship between the aircraft and the aircraft.

The distance between the two sides.

In the most stable operation possible, the aircraft is always accelerating. From the beginning to now, the distance between the wings on both sides of the tunnel wall has always been within a safe range.

Of course, the so-called safety range is actually only three or four meters.

265KM/H!

275KM/H!

285KM/H!

291KM/H!

Amid the applause of the staff who watched the footage on the monitor, Xiao Ning reached the maximum flight speed required for this mission in a short period of time.

But after completing the top speed requirement, he had no intention of slowing down.

A tunnel is different from the outside space, because in this environment, which is equivalent to a confined space, the flow of air is naturally worse than that in the outside world.
To be continued...