Since Xia Yu determined the whereabouts of the J-31 after it was finalized, Wang Pengyu also began to study hard, he has always been aiming at Xia Yu, thinking that as long as he works hard to exercise his flying skills and air combat awareness, he will be able to keep up, and even surpass Xia Yu one day, but he didn't expect that he was unknowingly left behind by Xia Yu such a big distance. If we don't try to catch up now, I'm afraid the distance will only get farther and farther.

Cao Yanhua and Yuan Limin also revealed in their conversation that they would continue to select a test pilot from the Air Force, and they did not let themselves leave the room at that time. After the two left, Wang Yifu also reminded himself that if he worked hard, maybe he would have a chance. Wang Pengyu secretly decided that he must find a way to enter the test flight project, so he seized the time and worked hard to enrich himself. The books that Xia Yu had read at the beginning, he borrowed them from Xia Yu to study one by one, and if he didn't understand, he asked Xia Yu, which made Xia Yu think that he had taken the wrong medicine recently, why did he suddenly start studying hard?

Xia Yu naturally wouldn't guess what Wang Pengyu was thinking in his heart, if a person worked hard to supplement his knowledge was a kind of progress, he would only appreciate it, so Xia Yu was still the same as usual, driving the trainer plane in the sky from time to time, but there was no Wang Pengyu in the back seat, which made Xia Yu often dare to play some flight maneuvers that made the ground personnel break out in a cold sweat.

The days are just like this, day by day, Xia Yu can drive J-31 in the air test opportunities are getting less and less, the first two months Xia Yu only flew in the sky three times, the last month even does not have to fly, with 31009 as the prototype of the carrier-based J-31 has been basically finalized, as long as the last liftoff today does not happen, Xia Yu can retire.

Outside the walls of Yan Liang's test flight base, many aviation enthusiasts gathered at this moment to take pictures secretly. J-31 as China's latest fourth-generation stealth fighter, in addition to the attention of relevant personnel in the industry, has been looking forward to the development of national science and technology, hoping that the national military industry level to catch up with the ordinary people in Western countries are also very concerned about the progress of the development of this aircraft, although most people just join in the fun, but there are still a very small number of enthusiasts on the J-31 speculation is very close to the design and technical parameters of the Falcon Eagle, of course, it is only close.

However, just like the J-10 that was found to be a father, the J-31 still can't get rid of the fate of being found a father, especially after the recent reopening and allowing the public to shoot the J-31 on the periphery of the airport base, the binary vector tail vent that is almost exactly the same as the F22 has also been complained by many people.

Although troops are dispatched from time to time to drive away the people who are secretly filming, and even confiscate the tools used by the people to shoot, there are still many J-31 videos that have been filmed and uploaded to the Internet, which sounds like a leak, but in fact this is also a kind of Shenfei marketing strategy, after all, the J-31 itself has a plan for foreign trade. Driving away the people who took secretly is just a gesture, so that the video can be uploaded to the Internet to attract attention and heated discussions, and to ensure that the details are not disclosed, this is what Shen Fei cares about.

Obviously, Shen Fei succeeded.

In the eyes of enthusiasts, as long as they have seen the process of the test flight, they can even estimate the angle of movement of the aerodynamic surface of the J-31. In the past three or four months, every flight test, this J-31 has not made any changes in appearance, and the flight action has begun to change from drastic to gentle, and finally even simply turns a few times in the sky, which also provides them with a possible conjecture, that is, the J-31 may be the same as the J-20 not long ago, to be finalized.

As soon as the news of this conjecture was posted on the Internet, it immediately attracted the attention of all sides, and various versions of speculation emerged one after another, although Xia Yu also saw it on the Internet, but for him, this is no longer attractive, and who else can know J-31 better than him?

"Take-off procedures checked."

"The tower has received it, the runway has been cleared, and you can take off at any time."

"09 understood, now taxi into take-off position." Xia Yu gave Wang Yifu and the others a thumbs up, and then controlled the plane to move slowly towards the runway.

In the take-off position, Xia Yu did the final inspection of the aerodynamic surface, and outside the wall in the distance behind him, large and small photographic equipment was aimed at the J-31, waiting for it to take off.

Turn on the afterburner, maintain a certain speed and push the throttle all the way to the end, the sound of the turbofan engine changes from dull to sharp and excited, and the translucent blue Mach disc that shoots out from the tail vent is not very long, and it quickly converges, only a tumbling wave of air can be seen agitating at the tail of the plane, pushing the plane to taxi on the runway.

The lever was pulled back, and the J-31, which had gained enough lift, suddenly raised its head, piercing the sky like a sword out of the sheath, and the near-vertical climbing angle made the people outside the wall exclaim, this kind of flight attitude like a performance was the first time they saw it from the test flight J-31.

rushed to an altitude of 8,000 meters at an almost vertical angle, Xia Yu controlled the plane and immediately made a flip afterburner dive, the huge overload force tore at his body, and the load load of up to 4.5 G could make ordinary people directly unconscious Although it also made Xia Yu feel some pressure, but the strong body strengthened by the starry sky allowed Xia Yu to resist this very dangerous situation very well, and he didn't even have red vision.

When the pilot pulls the lever quickly, the nose of the aircraft quickly rises and forms a positive overload, at this time, the blood of the head quickly flows to the lower limbs, so it causes a large amount of blood loss in the brain, and the situation that nothing can be seen in the darkness in front of the eyes, this is black vision, if the overload exceeds the human body's capacity to bear too much, it can even pull the pilot's eyeballs out of the eye socket.

The mechanism of the phenomenon of red vision is the opposite of black vision, but the danger is much higher than that of black vision. When the plane dives quickly and starts with an acceleration of more than 2G, the inertial force will push a large amount of blood in the human body to the head, making high blood pressure form in the pilot's head, and when it is minus 3G, some people will have red vision, and anything they see at this time is red. And when it comes to minus 4G, there will be people who are delirious and unconscious, which is why the overload coefficient of modern fighter designs is usually from minus 3G to plus 9G.

The afterburner dive just now, the load load is definitely 3 G, Xia Yu's flight today was very intense from the beginning, Wang Yifu looked a little worried on the ground, picked up the radio and said: "Command car call 09, your action today is a little bigger, put it smaller." ”

"09 Roger." Xia Yu connected the radio and said, "If there are no accidents, this should be my last test flight of the No. 9 aircraft." After a moment of silence, Xia Yu continued: "I want to fly with it to my heart's content, over." ”

On the ground, Wang Yifu was also silent. It's been more than two years, almost three years, from the prototype to now, he has basically been finalized, he has come step by step like Xia Yu, and his hard work on the No. 9 machine is no less than anyone else. Although there will still be test flights after the J-31 is finalized, the fate of the No. 9 verification aircraft can only enter the museum for people to visit, and it can no longer soar in the sky as it does now.

Thinking about it this way, Wang Yifu suddenly felt a little sad, for the finalization of the follow-up model, 31009 has been improving and changing, when success comes, it itself has lost the opportunity to fly again, just like an angel with folded wings, can only stand on the ground and look sad.

If this is its last flight, Wang Yifu thought to himself, let it soar freely.