Like the J-7, there is no problem with retracting the landing gear below 2,500 meters, and now it has been extended to 3,000 meters, which is not a big problem.

After recovering the landing gear, Qin Feng piloted the fighter and continued to climb, and soon, the altimeter pointed to four thousand meters.

The J-5 behind was much slower, circling and waiting for a minute, the J-5 finally followed, Qin Feng was in the air for four thousand meters, keeping level flight, and then, he pressed the button to retract the landing gear again.

"Tom!" This time, with a soft sound, suddenly, the nose of the plane began to tilt up.

Startled Qin Feng, Qin Feng immediately pushed the operating stick smoothly and slowly, and finally, the fighter returned to stability.

"The landing gear is released normally." The sound came through the headphones again.

This time, Qin Feng did not immediately retract the landing gear, but carefully made a few movements, shaking the operating lever and pedaling the rudder, with the shaking of the fuselage, it was obvious that the fighter was not easy to operate.

"The fighter is difficult to operate, but it can still be operated." Qin Feng shouted over the radio.

After all, if you want to land at a plateau airport, you must operate the fuselage to fly smoothly before you can land.

Mr. Gu on the side watched the plane withstand the test, and he was very satisfied, thanks to the low-altitude and large-speed test flight some time ago.

In the test flight at low altitude and high speed, the fuselage of the fighter was subjected to great air pressure, and in that case, the fuselage was still intact and withstood the test, so now the fighter can withstand this kind of operation.

Otherwise, the lid of the landing gear would have flown away a long time ago, just like Qin Feng did when he first flew a low-altitude and high-speed test flight.

"Climb to 4,500 meters!"

This time, the altitude only increased by five hundred meters each time, and as the altitude increased, the uncontrollability of the aircraft became even greater, fortunately, Qin Feng was already prepared, and at the moment of release, his hand began to push the operating lever smoothly, and the upward torque of the nose was overcome.

The fighter plane was like a wild horse that was out of control, shaking in the sky non-stop, and Qin Feng used a lot of effort to finally control it.

Climb to 5,000 meters!

This day's test flight finally came to an end, and when Qin Feng came down, the entire flight suit was soaked with sweat.

"According to today's test flight, the stability of our J-8 fighter will become worse and worse as the altitude increases, especially above 5,000 meters. However, as long as the advance plan is made and the flight center of gravity and attitude are strictly restricted, the risk of loss of control can theoretically be controlled at a fairly low level. Qin Feng felt that his whole body was sore, almost lying on the chair, and said to everyone.

Looking at the whole world, I am afraid that only I need this kind of operation experience on plateau airports, and other countries do not need it.

According to the Soviet manual, such "special operational measures" in China are out-and-out illegal operations and flights.

Of course, this is only the first step, after all, if you put down the landing gear in the air, you can't actually simulate it, and he has to be able to actually land.

Such a test flight will soon begin.

"For the sake of safety, we can't fly directly to the plateau of more than 3,000 meters, so the superiors decided to let us transfer to the red clay plateau first, to run in, and next time, we will fly directly to the plateau of 3,500 meters." Qin Feng's ears still echoed Mr. Gu's words.

The task was urgent, and after the experiment of putting the landing gear, it was about to fly over the plateau, but instead of flying directly to the scheduled civil airport on the plateau, he changed his course and went to the laterite plateau first.

Moreover, it was not Qin Feng's fight, right next to him, Wang Yang also flew over.

The test flight mission of the J-8 is very tense, at this time, in the rear of the 112 factory, the new J-8 is being rushed out, however, in order to carry out this interception mission, the superiors still decided to transfer the latest two J-8 in the test flight.

If there is only one J-8, then the success rate of interception may not be high, and two together, at least after one fails, the other can come to a supplementary interception.

In case of mechanical failure, one plane exits, and there is another one on top.

Wang Yang also participated in this mission.

Qin Feng glanced at the wingman flying next to him, and then looked below, the ground in the distance had become bright red.

The Red Clay Plateau, a beautiful scenery of the motherland.

In the terraced rice fields, on the fiery red soil, wheat flowers, buckwheat flowers, rape flowers and radish flowers bloom alternately throughout the year, and the colors are dazzling, and the bright and intense color blocks are spread all the way to the end of the sky. September to December is the best time to enjoy the red earth.

Even from the sky, the sight of the earth is quite spectacular.

In the early years, copper was smelted on this land, and the soil here was a brilliant red color because of the copper content, and because the copper smelting of the past generations cut down the trees on the mountain and exposed a large amount of red soil, a large area of red was formed.

It looks like that's as spectacular.

It's like heaven on earth.

"Attention, the airport is almost there." Voices came from the headphones.

Among the flowers, between the red earth, there is a long straight runway, from here, it is very conspicuous.

Qin Feng pushed the operating lever, and the fighter slowly descended.

"Put down the landing gear."

At this time, the altimeter indicated that it was more than three thousand, Qin Feng had already lowered the landing gear, the fuselage shook gently, he gently pushed the operating stick, and the fighter continued to descend and descend, and then, the wheels touched the ground.

Two J-8s smoothly landed on the airfield on the Red Clay Plateau.

When the cockpit canopy opened, Qin Feng took a breath of the air around him, which was full of the fragrance of flowers.

"It's so comfortable." Qin Feng said.

"Yes, it's more comfortable here, and when the next transition comes, it's not so easy." At this time, Mr. Gu was already here to greet him with the ground staff.

The altitude is more than 2,000 meters, the air is still relatively dense, everyone stay here for a few days, let the lungs fit it, and next time you transfer, the air is thin, I'm afraid many comrades will have to take oxygen.

The sky is blue, the green mountains in the distance, and the flowing water are refreshing to see.

"Quick, take care of the fighter now!" After flying over, Qin Feng could relax for a while, and for the ground crew, they would have to be busy, maintaining the aircraft, and at the same time experimenting to see if the engine could start normally at an altitude of more than 2,000 meters.

To despise the enemy strategically and attach importance to the enemy tactically, it is now necessary to attach importance to tactics and act in accordance with scientific laws.

.。 m.