From a height of 200 meters to a height of 2,000 meters, the altitude difference of 1,800 meters, Yang Luo usually does not take more than 10 seconds.

If you fly with the maximum climb rate, or even climb with afterburner, basically six or seven seconds are enough.

However, this time, in order to accommodate the blind lightning war and avoid unnecessary danger, it took more than 4 minutes, and the speed at this time also reached 400 kilometers per hour.

"Towers, 301 and 425 have reached the predetermined altitude and are about to start testing, over."

Reaching an altitude of 2,000 meters and guiding the Lei Zhan to level the fighter, Yang Luo looked down at the station on the lower right, and then reported to the tower.

In fact, in order to reassure the people on the tower and intuitively see the process of the test, they did not climb in a straight line, but spared a large bay, so they are still near the station, only six or seven kilometers away from the station.

Otherwise, with the speed of the two fighters at 280 kilometers per hour, and the speed is still increasing, even if it only takes more than 4 minutes, their flight distance is at least more than 20 kilometers, and they are no longer within the ground observation range, and the flight attitude can only be judged by radar.

"It's okay to start, stay safe, and you're done."

Bai Chaoqun has been looking at the posture of the 301 J-10C and 425 J-11BH through the optical telescope on the tower, and said when he heard this, he pressed the intercom button.

"Understood, over." Yang Luo replied to the tower, and then said to Lei Zhan: "425, keep the posture of level flight, I will climb the altitude now, and the descending height from above you is close." Always listen to my instructions, you must trust me completely. ”

"425 understand, I believe in you." Lei Zhan said, his tone extremely serious.

"Okay, I'm here."

After Yang Luo finished speaking, he took a deep breath, his face became solemn, and his right hand pulled the lever back slightly, climbing to a higher position.

For Yang Luo, the pressure is also not small, not only to operate steadily and accurately, but also to take into account the command of lightning warfare and provide accurate data for his reference operation.

Because of the sharing of a communication channel, everyone on the dialogue tower between Yang Luo and Lei Zhan listened to it, and they all looked up at the sky.

In addition to Bai Chaoqun, the commander, who has an optical telescope, the head of the air department and the head of the HNA also have one in their hands, which are the only three telescopes on the tower, and as for the others, they can only see it through the naked eye.

The weather is good today, but the wind is a little strong, but the distance of six or seven kilometers is still within the visual range of the naked eye.

However, everyone's faces obviously became more solemn all of a sudden, and they were all silent, and there was silence on the tower.

"Yang Luo, Lei Zhan, I believe you will succeed." Bai Chaoqun secretly prayed, pinning his hopes on this experiment, he really couldn't think of any other way.

Yang Luo naturally couldn't hear Bai Chaoqun's heart, at this time he had already driven the 301 J-10 to climb to an altitude of 2,100 meters.

The positional relationship with the 425 J-11BH basically maintains the previous relationship, except for the height.

Yang Luo glanced at the dashboard, kept the current speed in mind, and then pushed the throttle valve slightly with his left hand, increased the speed, and chased the 425 J-11BH from the upper right rear of the 425 J-11BH, and there was still a distance of dozens of meters between them.

The reason why it is not directly chased from the rear and upper part of the 425 J-11BH is because it is possible that the 301 J-10C will inhale the exhaust of the 425 J-11BH, even though they have an altitude difference of 100 meters.

Inhaling the exhaust fumes from the front engine is likely to cause engine failure, which can lead to a decrease in speed or a direct shutdown of the engine.

The J-10C has only one engine, and once it fails, and the J-10 series is a static and unstable aerodynamic layout, the consequences are self-evident.

"Boom!"

The sound of the roaring of the two fighters and the three engines superimposed together, coupled with the fact that they were not flying very high, made the entire Dingxin station full of loud noise.

In a very short period of time, Yang Luo caught up with Lei Zhan, and reduced his speed to the speed he had memorized before at the position of half a fuselage behind Lei Zhan in the upper right corner.

Yang Luo carefully observed and adjusted it several times, and determined that the position with the 425 J-11BH did not continue to change, indicating that the current speed was synchronized with the speed of the 425 J-11BH.

Immediately afterwards, Yang Luo pressed the lever to the left, causing the fighter to roll to the left side to the top of the 425 J-11BH and half a fuselage behind.

It can't be any longer, otherwise the air intake located in the belly of the fuselage will inhale the exhaust gases of the 425 J-11WH.

Because of the 100-meter altitude difference, this operation did not have any impact on the two aircraft, so there was no need for Yang Luo to remind anything.

What Yang Luo needed to remind Lei Zhan was the next operation, when Yang Luo lowered his altitude.

The previous operations were not difficult operations, as long as they were not rookies, pilots who had flown in the army for more than a year and a half could basically do it.

Speed synchronization, course synchronization, in fact, this is the basis of formation flight.

But the next operation is not just a pilot can do it, you must have a wealth of flying experience and courage.

The smaller the distance between each other, whether it is vertical or horizontal, the more the pilot's flying skills and courage are tested.

Adjusted to the flight attitude to level flight, and slightly adjusted the flight direction to ensure that it was consistent with the flight direction of the 425 J-11BAH, Yang Luo immediately spoke: "I'm going to descend altitude, pay attention to my instructions." ”

"Understood, I'm ready." Lei Zhan replied calmly, the serious expression on his face remaining.

Yang Luo did not use the pressure rod to press down the nose dive to reduce the altitude, because it would be more complicated to do so, the attitude of the dive will inevitably bring an increase in speed, and it will also change the angle of attack, and a lot of operations are needed to reduce the speed to ensure synchronization with the speed of the 425 J-11BH, and another point is that it is impossible to provide accurate data for Lei Zhan as an operational reference.

The method adopted by Yang Luo is relatively simple, changing the angle of attack of the fighter to reduce its lift, and then reduce the altitude, so that the flight attitude and speed of the fighter will not be changed.

Yang Luo's eyes have been on the dashboard, always paying attention to the data on the dashboard, and constantly informing Lei Zhan of the flight parameters and giving him reference operations.

As the altitude difference decreases, the lift received by the 301 J-10C is also changing, although there is no instrument for lift, but it can be seen through the change in altitude.

In the case of a certain angle of attack, the increase in lift will force the fighter to reduce the altitude more and more slowly, until the altitude is no longer reduced, stable at a height, and a balance is reached.

When the altitude difference was reduced to 50 meters, the altitude of the 301-10C was no longer lowered and stabilized at 2050 meters.

On this altitude difference, the 425 J-11BH was not affected, and no operation was carried out by the Thunder Warfare.

The situation is now in a delicate balance.

In the previous operations, Yang Luo was all trying to find such a balance.

However, the next 425 J-11BH will inevitably be affected, and it needs to be handled correctly, otherwise it will fall in height and there will be a danger of stalling.

Yang Luo raised his eyes and looked ahead, and the nose of the 425 J-11BH could not be seen at this altitude, and the altitude had to be reduced.

"Tower, my height is 2050 meters, how much does the radar measure?" Yang Luo did not operate immediately, but sent an inquiry to the tower.

The two planes are superimposed, and the distance is still so close, Yang Luo has not flown like this, nor has he seen others fly like this, I don't know whose altitude the radar has measured, and I need to confirm it.

Bai Chaoqun on the tower put down the telescope and looked at the radar screen: "The altitude measured by the radar is 2,000 meters, and it can be confirmed that this is the height of the 425 J-11BH, not your height." ”

"Understood, my current angle of attack is no longer descending in height, and I can't see the figure of 425 yet, I need to continue to reduce the angle of attack and reduce the lift to reduce the altitude, please monitor the height of 425 and remind him at any time." Yang Luo said solemnly.

Yang Luo's words were not just for the tower, but also to remind Lei Zhan.

"The tower received, 301 be careful, and be sure to pay attention to safety." Bai Chaoqun said with some trepidation.

Now the altitude difference is low enough, and it is impossible to see from the radar screen that these are two planes, which have been completely integrated, and even the radar has been deceived and can only measure the height of one of the planes.

Also reduce the altitude, and the probability of danger will increase exponentially.

"301 understands, I have no problem, the key is to see if 425 can be stabilized." Although Yang Luo's tone was light, he showed strong confidence.

"I'm fine, 301, you can come with confidence." Lei Zhan's confident voice sounded immediately after.

The real test is coming.

"I'm going to start, I'm going to lower the angle of attack by 0.1 degrees."

Yang Luo took a deep breath, exhaled the turbid breath again, reminded Lei Zhan and the tower, skillfully operated with both hands, and lowered the angle of attack a little bit again.

This is a delicate job, and you can't rush it, you have to take it slowly, and try it little by little.

The angle of attack decreased, the lift decreased accordingly, and the altitude of the 301 J-10C began to decrease again, but this time the altitude decreased very slowly,

Obviously, the lift of the fighter is still very large, only slightly less than the gravity of the fighter.

At the same time, the 425 J-11BH was also affected, and its height began to decrease.

"425, your height drops again, steady." Bai Chaoqun sent a reminder to Lei Zhan at the right time.

Fortunately, the place where they tested was not far from the radar station, and the radar had sufficient accuracy.

"425 understood."

The altitude drops again, indicating that the lift is not enough, and the angle of attack must be increased to obtain greater lift, so Lei Zhan relied on his own sense to slightly increase the angle of attack, which was also about 0.1 degrees in his senses, and then asked: "What is the current altitude?" Has the downward trend stopped? ”

He didn't dare to increase the angle of attack too much at once, otherwise the lift gained at once would be too large, and the fighter would be forced to climb and collide with the 301 J-10C overhead.

"The previous height was 1993, the current height is 1995, the downward trend has stopped, and now it is climbing." Bai Chaoqun said.

It is clear that the range of operation of the thunder war is excessive, and the angle of attack is excessively increased.

It's no wonder that Lei Zhan, after all, he is flying blindly, and it is already very good to be able to do this, and the climb rate is not very high.

"I'll lower the angle of attack right away." Lei Zhan said.

"425, don't move, I'll do it." Yang Luo stopped the operation of Lei Zhan's preparations,

Because the 301 J-10C no longer lowers its altitude with the operation of thunder warfare, but also has a tendency to climb.

Continue to lower the angle of attack......

Yang Luo, Lei Zhan, and the tower maintained communication with each other, reducing the height difference little by little.

As the height difference decreases, the difficulty of operation also increases dramatically, and occasionally the height difference increases instead of decreasing.

Yang Luo's forehead was slightly sweaty, but his hands were very steady, trying to stabilize the posture of the fighter.

In Yang Luo's feeling, the 301 J-10C has a feeling of flying high out of his control, and the control is very difficult, and the nose is automatically upturned, and he has to press the bar to keep it flying level.

It is conceivable that Lei Zhan's operation will be more difficult, after all, all his operations can only rely on feeling.

Both fighters began to show signs of instability, shaking from time to time, and everyone on the tower was startled, and their hearts were raised to their throats.

I'm afraid!

An accident is not a trivial matter, either the collision of the two planes caused a tragic accident, or the 425 J-11BH fell.

But fortunately, everyone is a character who has gone through strong winds and waves, and they can calm down and breathe without stopping the test.

The height difference is slowly decreasing.

Finally, after unremitting efforts, Yang Luo saw the radar antenna of the 425 J-11BH, and the dawn finally appeared.

"I see 425's antenna." Yang Luo shouted excitedly, "425 steady, let me drop a little more height." ”

"Good, good, good."

Bai Chaoqun said three good words in a row, and he breathed a sigh of relief, and his heart suddenly relaxed, and a smile appeared on his face.

It is already very good to have this result, at least it can ensure that the 425 J-11BH can accurately land on the runway, and Bai Chaoqun is already very satisfied.

The rest of the tower was the same, and there was a sense of relief.

Radar antenna, and then take a point from the runway, and a straight line can be determined between the two points.

Of course, the ideal situation is to reduce the altitude a little more, so that Yang Luo can see the entire nose of the 425 J-11BH, which has the advantage of ensuring that the 425 J-11BH can land on the central axis of the runway and will not yaw.

"You're doing well, 425, can you continue?" Bai Chaoqun asked in an excited tone.

Bai Chaoqun was completely convinced of the skills of the two, and the cooperation between the two also amazed him, he never expected that the two who cooperated for the first time could cooperate so tacitly.

"No problem." Lei Zhan's voice was very firm.

Once again, the height difference is reduced.

The two fighters shook in fear again, and then slowly stabilized.

Yang Luo finally saw the nose of the 425 J-11BH, and the black radome was all displayed in his eyes.

It's done!

It's finally done!

Yang Luo's heart was completely relaxed, and he reported to the tower very easily, and his tone was indescribably relaxed: "Tower, my current height is 1995, and I can already see the radome of 425, what is the height of 425?" ”

"Well done." Bai Chaoqun praised first, and then reported the data: "The height of 425 is 1990, and the height difference is 5 meters. ”

5 meters!

That's a staggering number.

It shows the superb flying skills of the two of them, and they have entered the ranks of top pilots.