In the gray haze, like the F35 1801 in the sky is extremely dexterous up and down, left and right, Xia Yu, who has had a fierce struggle with the F35, can feel that this aircraft in the climb rate, roll rate and the lowest stability of these important flight technical indicators compared with the F35 still has a certain advantage. However, now it is unloaded, and if it is fully loaded, because of the impact of the external missile on the aerodynamic shape, it is difficult to say whether it will be able to compare with the F35 at that time.

The test flight airspace demarcated by the ground command vehicle is too small to fly at full speed for a few seconds, but Xia Yu does not need to test the supersonic performance of the 1801 now, but to conduct some simple tests on the flight control system. When the plane flies in the sky, it is nothing more than a left circle, a right circle, and then a small slope climb and dive, shaking the wings and other test flights, which is also the basic test items discussed with Cao Huajun when he was on the ground.

The flight control system can be optimized based on the extraction of flight data from the aircraft in the air after landing, so that in general, the aircraft will not have a very intense flight during the first or first few liftoffs. But Xia Yu, who has not flown for too long, obviously will not be satisfied with this kind of basic flight test, and feels almost adapted to the reaction of the aircraft to himself during the operation, Xia Yu said on the radio: "The response of the plane to the control is very smooth, I want to try a larger range of action." ”

On the ground, Cao Huajun's heart jumped after hearing Xia Yu's call, this was not in the original test project at all, right? So after hearing Xia Yu's call, Cao Huajun immediately picked up the microphone and said while staring at the plane in the air: "No, ......"

The words had just begun. Cao Huajun saw 1801 suddenly raise his head and begin to climb rapidly with a slope that exceeded three times that of before. Then the same deflection flight was carried out at three times the curvature, although significantly exceeded the items of the first flight test. However, Cao Huajun finally breathed a sigh of relief, this level of flight operation is still in the plan, at most, the next two test flight projects have been completed, and it is not too challenging to the flight performance of 1801.

Cao Huajun was a little relieved, but if Wang Yifu was here, he would pat Cao Huajun on the shoulder regrettably, and sigh that someone finally felt the same way as himself, because the good show was still to come.

Sure enough, Cao Huajun just breathed a sigh of relief. decided to stop Xia Yu's advanced testing behavior, and said in the microphone: "1801, don't be too ...... Intense, intense, ......"

Before he finished speaking, Cao Huajun saw 1801 suddenly and violently roll over the fuselage in the acceleration and raise the nose of the fuselage, and the belly of the fuselage turned sharply in a way similar to the drift of a car towards the left front, and the huge air pressure difference formed in an instant made the detachment vortex cover the back of the fuselage and slide forward. Cao Huajun on the ground couldn't even finish his words with his mouth open, and while jumping out word by word, Xia Yu had already completed an instantaneous change to level flight.

“1801。 Don't do this extreme maneuver!! Cao Huajun came back to his senses, grabbed the microphone and finished his words at the fastest speed, this kind of intense flight operation has completely exceeded the current test content, let alone said. It is very dangerous to do this kind of action when the flight control system has not been optimized, and the aircraft is likely to cause the most terrible failures such as engine stopping in the air due to the imperfection of the system, Cao Huajun saw the flattened aircraft. I wanted to take advantage of Xia Yu's just leveling up stage to issue his own order, prohibiting Xia Yu from continuing to do large overload flight maneuvers. But Cao Huajun was still late, because Cao Huajun didn't expect Xia Yu to finish one action. The most basic test flight operation, such as changing to level flight and then requesting the next action, made a continuous large overload that made Cao Huajun look terrified on the ground.

Flattening? No, it's just a seemingly leveling operation. Xia Yu's maneuver similar to leveling after doing the instantaneous disc was actually just a transitional posture into the big drum. When Cao Huajun saw that the plane seemed to be leveling, in fact, the plane had already begun to make a downward dive drum action around the forward axis, which made ordinary pilots feel uncomfortable The continuous 6.5G overload made Xia Yu scream comfortably, at this time, Cao Huajun didn't even dare to talk to Xia Yu on the radio, for fear of affecting Xia Yu's control of the plane.

The time to sustain 6.5G overload must reach 45 seconds, which is the anti-overload level of mainstream third-generation aircraft, don't look at Xia Yu's continuous high overload maneuver at every turn, but that is because of the result of the starry sky's strengthening of Xia Yu's body. In fact, if any ordinary pilot is not assisted by equipment, their basic load resistance to positive overload is less than half of 9G, and the average tolerance level is generally about 4.25G for ten seconds, which is regardless of race, whether it is white or black or yellow, there is no difference in basic endurance.

At the same time, the ability to withstand 4.25G for ten seconds is also one of the criteria for the selection of third-generation pilots, 5G is already the average level of elite pilots such as test pilots, although a very small number of people can reach the 7G standard, but this is already a talent brought from the genetic level, others only have envy, because no matter how much you exercise, you can't do that level, which is also one of the reasons why Xia Yu obviously has far more than ordinary people's anti-overload ability, and he has not been sliced by scientists.

Although Xia Yu flew crookedly, he still did not forget that he was doing a test flight of the plane, so when the duration reached 45 seconds, Xia Yu withdrew from the drum maneuver and leveled the plane.

"Whew...... ...... exhale" The sound of heavy breathing came out as Xia Yu leveled down, and Cao Huajun's chest was stuffy with a mouthful of exhaust air, and at this time he realized that he was so nervous that he even forgot to breathe just now. After gasping for a few breaths, Cao Huajun remembered to quickly notify Xia Yu to land, and put the microphone to his mouth, Cao Huajun was about to speak, and Xia Yu's voice came from the loudspeaker: "The continuous 6.5G overload capacity can reach 45 seconds, the aircraft attitude is good, the system is working normally, and the engine is working normally, but I feel that there is still a bit of a problem with the trim, and it needs to be optimized." ”

"Don't talk about that yet, you can land quickly." Cao Huajun simply didn't talk, it was only 3 minutes after he took off and flew, how could he feel like he had passed 30 minutes, if he wanted to continue like this, it was really hard to say if his heart could bear it.

"Eh?!!" Cao Huajun's order to land made Xia Yu, who had just flown vigorously, feel itching in his heart, why was he about to land when he took off? It's not powerful!

"Don't huh, land quickly." Cao Huajun didn't dare to let Xia Yu continue to be presumptuous, and said: "The basic test flight has been completed, and now the flight data needs to be extracted." If you want to blame it, blame you for moving too fast. ”

"Well, 1801 received." Now that the order has been issued, Xia Yu has to prepare to land even if he is reluctant. Moving the joystick, SCP-1801 made a sensitive U-turn and flew towards the runway. According to the original plan, in order to land safely, Xia Yu needed to take a normal gliding way to land when landing, but Xia Yu, who was obviously not enjoying flying, only felt that landing smoothly like this would suffocate the fire in his heart just now, that uncomfortable energy, it was like ants crawling around all over his body, but his hands were still uncomfortable because he couldn't scratch because he was tied, anyway, he felt that there would be no problems with the control of the plane, Xia Yu decided to take the way of gliding and landing, and use vertical landing, Therefore, when he flew to the airport, Xia Yu not only did not lower the flight altitude according to the glide path, but began to climb, this abnormal behavior made Cao Huajun, who was observing with a telescope in the airport, his heart beat wildly again, and he quickly put the microphone to his mouth and asked: "1801, your altitude is rising, why didn't you enter the field?" ”

Xia Yu replied: "Command vehicle, 1801 gave up gliding and landing, and prepared to adopt a vertical landing scheme." ”

Cao Huajun was in the black line and said, "1801, please land as originally planned." ”

Xia Yu replied again: "1801 received, but the plane is currently in good condition and has sufficient fuel, I still want to try vertical landing." ”

"Command vehicle received." After hesitating for a moment, Cao Huajun still agreed to Xia Yu's request and said, "1801, you can land vertically." ”

"1801 Received."

In the test flight test, although in most cases the test pilot has to obey the command order of the ground, but in a specific implementation process, the aircraft will still be controlled according to the test pilot's own opinions, which is also one of the tasks of the test pilot.

However, after agreeing to Xia Yu's request for communication, the more Cao Huajun thought about it, the more cold sweat grew behind his brain, how could he forget Xia Yu's style of acting? Will a person who can make some kind of mess even if he is not allowed to do anything after being allowed to do so and carry out the landing procedure normally?

Looking at the speed and height of 1801, Cao Huajun had an ominous premonition in his heart, and then, after the 1801 in the air flew to the head of the runway, it was not a smooth deceleration, but suddenly pulled up the nose, so that the plane exceeded the critical angle of attack of the stall, and became a nose facing the sky, slowly falling down.

Cao Huajun just wanted to shout: Brother, brother. Nima, don't make a fuss, okay? Why don't you have fun together? (To be continued......)

PS: Thanks to 001frh for the monthly pass, this is the second monthly pass voted by my brother.