The general first flight, are not recovered landing gear, and, just around the airport, you can come down, as long as the verification of the aircraft can fly, can fall, this is a huge progress, a historic moment, the first flight will draw a successful question mark!

According to the original plan, the plane climbed to 1,000 meters, turned left and flew flat, and landed along the mountains and rivers of the aircraft city.

However, when he just pulled it up, Qin Feng felt that something was wrong.

Why are your hands shaking?

If it's the first time you get on the plane, you may tremble because of nervousness, and your hands will tremble, which is normal, but the question is that you are no longer a novice, how can your hands tremble for no reason?

He looked down and glanced at the dashboard, and found that the dashboard seemed to be a little unclear, what was going on?

"001, I feel a little shaking." At this time, Yang Lin in the rear cabin also began to report.

Qin Feng was piloting the plane, and Yang Lin behind him did not have a lever, and now, he also felt a little trembling, Qin Feng suddenly chuckled in his heart, not good!

Structural tremor!

Although the plane is trembling, but it is completely different from the kind of pilot-induced shock that I have encountered before, the kind of induced shock is because when I adjust the operation of the aircraft, the adjustment is excessive, or the feedback of the flight control is too sensitive, and now, my plane is not operated at all, just the most ordinary climb, and it begins to tremble, this trembling is now more and more intense, and it accelerates with the increase of speed, which is a more terrible structural tremor!

When I was running, I had this feeling, but it was too slight at the time, and no one took it seriously, but now, this failure, after taking off, is manifested!

If the plane flies into the stall tailspin, there will be a flutter of the fuselage, when the tremor is terrible, it will even disintegrate the whole plane, at that time, the pilot does not even have a chance to jump out, because the pilot and the plane are one, when the steel fighter will be trembling to the ground, the pilot inside has already spilled blood in the sky!

That's a special case after stall tailspin, but what about now? The plane was still in normal condition, and the plane began to tremble, which was obviously a design flaw.

Test flight is high-risk, in the design process of all kinds of problems, will be exposed in the test flight, which will test the ability of the test pilot, if the test pilot does not operate correctly, then, may cause the most terrible results.

Now, what to do?

Skydiving?

Now parachuting, there must be a chance, both of them were able to escape with their lives, but the plane fell, and the crash on the first flight was a heavy blow to the model, and it may even return to the failure of the entire project.

It had to be flown back, and only by flying back could the engineers be given samples and let them study what the problem was!

Qin Feng made up his mind.

It's not easy to fly back, after all, after takeoff, you have to make four turns and complete a lap before you can return to land, and now, the first turn hasn't started yet, and he's still far away from the airport!

"001 reports, the plane has a structural tremor, and now the tremor is very strong, I will do my best to fly the plane back." Qin Feng shouted over the radio.

When the sound came back, the scene was silent, at this time, everyone was still immersed in the joy of the successful take-off, and in a blink of an eye, the danger came out!

Before takeoff, everyone thought of various situations, insufficient rudder torque, poor directional stability, poor wing lift coefficient, problems with various airborne equipment, etc., but everyone just didn't expect that now this plane, like a sheep's madness, trembled in the sky.

"That's right, it's trembling, the whole plane is shaking!" At this time, the lookout post on the tower captured it with a telescope, and in his telescope, he could clearly see that the plane was trembling.

Although he was tightly fastened with the seat belt, Qin Feng's body was still constantly colliding back and forth with his seat, every muscle in his body was shaking, he felt that his internal organs were trembling, and his eyes were even more faint, and everything had become a ghost!

Slow down the speed?

In this case, it is obvious that the faster the speed, the greater the amplitude, if the speed is reduced, the vibration will definitely come down, but in this case, the lift of the aircraft must also be reduced, if the speed is reduced, the lift is insufficient, and it may fall down at any time.

"001, report the situation, 001, report the situation."

In the tower on the ground, an anxious voice sounded, and at this moment, everyone's hearts were moved by this fighter plane in the sky.

"Report 001, now a turn." Qin Feng almost used all his strength, controlling the shaking of his arms and legs, pedaling the rudder, pushing the operating stick, and the fighter began to turn!

Sweat soaked Qin Feng's back, doing this action, he had exhausted all his strength, in front, rolling mountains appeared, his course was already perpendicular to the airport, and one turn was completed, but then there were three more turns!

His body trembled on the seat, Qin Feng forcefully took off his oxygen mask, and then breathed heavily, trembling, regaining his strength little by little.

"001 report, now two turns!"

If it was a normal flight, this kind of action would not have to be reported at all, and now, when he completed this action with all his strength, he finally ran parallel to the airport and began to embark on the road back!

In the violent tremor, the various instruments on the dashboard are not clear, the pointers are shaking back and forth violently, and the altimeter is even more spinning, as if it is flying off the height, but looking at everything around, you can be sure that you are flying at level, so these instruments are broken!

A small red light suddenly flashed, and in the shaking, it became illusory and expanded a lot.

"001 Report, Engine Fire." During this time, Qin Feng was already quite familiar with the cockpit, and he could touch the correct equipment with his eyes closed, although the red light was shaking, and he couldn't see the surrounding signs clearly, Qin Feng also knew that it was the alarm light of the engine fire.

The engine, is it on fire? This is really embarrassing. In the whole plane, Qin Feng is most assured of the engine, and the last two are the most reliable Spey engines in the UK, why did it also drop the chain at this critical time?

Although there are two engines, they are placed side by side, if one catches fire, it will definitely ignite the other, is it because the hydraulic oil pipe burst out during the violent shaking?