Facing the direction of 10 degrees north-east, under the illumination of the sun's rays, about 10 kilometers away from Dingxinchang Station, two fighters of different types swept through the air, leaving two long white trail clouds gradually spreading.

"Ten kilometers from the station, now the altitude is 1000, the speed is 450, and the current rate is maintained to reduce the altitude and speed." Yang Luo reminded.

On the way back, Yang Luo consciously guided Lei Zhan to slowly reduce the altitude and speed, otherwise he would need to hover in the air to reduce the altitude and speed when he arrived near the station and when Lei Zhan was blind, which would only add unnecessary trouble.

"Understand that the hold rate continues to reduce altitude and speed." Lei Zhan responded, his hands on the throttle and joystick motionless, very steady.

In the absence of any flight parameters, Lei Zhan could only rely on the data provided by Yang Luo and his own perception to operate.

"Go 30 degrees to the left and enter the landing course."

The direction of the runway is not consistent with their current course, and the course needs to be adjusted in advance.

However, fortunately, this angle is relatively small, and the adjusted course is just the course they took off before, which is the direction of the headwind, otherwise they would have to circle over the station.

"Understood, 30 degrees to the left."

Pedaling the right rudder, Lei Zhan carefully and slowly adjusted the course, and it took a lot of effort to adjust.

Seeing from the tower radar screen, the 425 J-11BH adjusted to the landing course, and Bai Chaoqun gave an order: "425, now the tower will guide you to land." 301, you continue to fly with you on the side of 425. ”

The data measured by the ground radar is limited, and there are only a few key data, such as altitude, speed, course, etc., and the radar measurement itself will have a certain delay, plus the delay of the notification, so Yang Luo has to fly with him and provide several other key data, such as angle of attack, elevation, roll angle, etc.

"301 understood."

"425 understands, accept the guidance of the tower."

The next thing is to land, and the most dangerous time is coming, and everyone is more worried.

As the deputy commander, Xiang Dong had already left the tower and went to command below, so as to facilitate the contact with Bai Chaoqun at the tower. Because all the information transmission below still needs to go through the transit of the tower, there is no way to directly contact the thunder war in the sky.

Time passed, without stopping for a moment, Yang Luo and Lei Zhan were getting closer and closer to the station, and it was already visible to the naked eye from the tower, the flight altitude had been reduced to 400 meters, and the speed was 280 kilometers per hour.

"425, speed 280 kilometers per hour, almost, don't descend any more, continue to reduce the altitude to 200 meters."

The speed has been reduced to almost, which is a more suitable speed for forced landing, which is 40 kilometers per hour higher than the minimum level flight speed, if the speed is further reduced, it is more dangerous if the runway is not allowed to goaround.

However, the height is a little higher, Bai Chaoqun's ideal height is 200 meters, and try to align the runway at this height.

"Understood."

Lei Zhan recycled the throttle valve to reduce the amount of jet fuel injected into the combustion chamber of the engine.

The altitude of the 425 J-11BH continued to decrease, and when it was lowered to 200 meters, Bai Chaoqun gave the order to stop descending altitude, and resumed the attitude of level flight under Yang Luo's prompt.

"What? Doesn't work, can't confirm whether it's aligned with the runway? ”

On the tower, after receiving the report to Colonel Dong, Bai Chaoqun couldn't believe it and shouted in surprise.

"Yes, there is no way to confirm and provide effective adjustment parameters."

The walkie-talkie in Bai Chaoqun's hand came out with the helpless voice of Colonel Xiangdong.

Sure enough, I was still naïve.

Bai Chaoqun's heart was full of a sense of failure, and he felt that this air combat competition was full of malice towards him.

This is the first time he has presided over an air combat competition, and there was a special accident in the first confrontation, and it is still such a tricky accident, and the key is not to think of a countermeasure.

Throughout the previous air combat competitions, there has not been a special accident, which one was not peaceful, and it was a very happy ending.

What to do?

What to do?

What to do?

Bai Chaoqun was so anxious that he asked himself several times in a row.

However, there is no answer.

Bai Chaoqun's face was dejected, and he looked helplessly at the few bigwigs staring at him.

"Let's let 425 pull up the height first, and then we will think of countermeasures, the height of 200 meters is too low and too dangerous." The head of HNA said.

"Yes."

Bai Chaoqun packed up his mind, put down the walkie-talkie in his hand, picked up the intercom that was talking to the air, and issued a new order: "425, raise the altitude to 500 meters, hover over the station and wait for new instructions, 301 is responsible for guidance." ”

"425 understands, pulls up to 500 meters and circles."

After Lei Zhan answered, he was about to pull the rod to climb the height, but he heard Yang Luo say: "Wait a minute, tower, what's wrong?" The current altitude is just right for landing, so why raise the altitude? ”

"The conditions for the forced landing are insufficient, the previous method does not work, we can't make sure that 425 is aimed at the runway, so we can only let you pull up and circle in the air first." Bai Chaoqun said very helplessly, "However, you don't have to worry, we are trying to find a way." ”

Yang Luo couldn't help frowning when he heard this.

Trouble!

I thought that the tower had all the measures to ensure the safe landing of the 425 J-11BH, but I never expected that it would be such a result, and it was impossible to ensure whether it was aimed at the runway.

The 425 J-11BH is indeed on the course of landing, but this is a different concept from aligning with the runway, and being on the right course does not mean that it is necessarily aligned with the runway.

There is only one runway at Dingxin Station, but there are countless courses that are consistent with the direction of the runway.

Although theoretically speaking, there are countless courses that coincide with the runway, but in the current situation, it is necessary to ensure that the 425 J-11BH is aimed at the central axis of the runway in order to minimize the risk factor.

Forced landings under any circumstances are very dangerous.

Under normal circumstances, landing on the runway is sufficient, even if it deviates from the central axis of the runway, because the pilot can make adjustments at any time to ensure that he does not overrun the runway.

You must know that although the fighter has reduced its speed to a low enough speed when it lands, it still reaches a speed of more than 240 kilometers, and the speed of the 425-11BH has an initial velocity of 280 kilometers per hour.

At such a high speed, if the direction of the fighter is not parallel to the runway, even if it is only a few degrees apart, if it cannot be adjusted immediately, it is enough to rush out of the runway in a very short time.

And this is precisely the most troublesome problem now, because the current situation is that Lei Zhan can't see, he is blind, and he can't adjust himself after landing, and he needs the guidance of the tower, and there is no guarantee that the 425 J-11BH will definitely fall on the runway.

If you fall off the runway, you don't even have a chance to save, and the final result can only be a chance to die.