Li Zhan opened the afterburner and began to climb, rushing from a height of 6,000 meters to an altitude of 20,000 meters. The two jet engines sprayed powerful airflow, pushing the 13-ton fighter jet to climb to a high altitude. The advantages of the J-8fr were fully utilized and easily climbed to an altitude of 16,000 meters, and then the climb rate decreased significantly.

Turn off the afterburner and keep the full throttle, the fighter still stubbornly keeps climbing, although the speed is no longer as good as before. At this time, Li Zhan could no longer see the ground. Looking down, there were all white clouds, like towering snow-capped mountains, with mountains, and more like evenly sprinkled white layers, dazzlingly white.

Li Zhan looked at the altitude meter. The altitude was 19,000, and the climb rate had dropped to an unsatisfactory level. If the canopy hood flew off at this time, Li Zhan would be frozen to death within a few seconds.

"Nanku, Hai Gao is 19,000, I'll make a last move, it's over." Li Zhan quickly checked the status of the fighter jets, and all systems were normal.

When he turned on the afterburner again, the fighter roared. However, it was not as powerful as low altitude. The oxygen at high altitude was thin, and the efficiency of the engine inevitably decreased. But he still began to accelerate tenaciously. Li Zhan stared at the altitude meter and watched the number above slowly rise to 20,000. After turning off the afterburner within the specified time, the fighter stubbornly climbed for more than a minute, and finally the altitude stayed at 21,000.

It's probably the limit.

Li Zhan resumed the level flight and breathed a sigh of relief. He reported, "Nanku, the sea level is 20,000 yuan, the course is 270 yuan, and the high-speed flight will be completed later."

Zhu Wei could see the position of the No. 101 J-8fr from the radar, and a heart slowly lowered. Although the theoretical maximum flight altitude of the J-8fr reached 22,000 meters, the practical ceiling was only able to fly over 20,000 altitude during the test flight. Li Zhan undoubtedly squeezed out the performance limit of the fighter.

He will have to fly at high speed later, but I wonder if Li Zhan wants to fly at the maximum speed of Mach 2.2.

Suddenly, Zhu Wei understood why Li Zhan specifically asked if the canopy cover structure had been particularly reinforced when he was in the hangar.

He had already planned to do such an extreme test...

Zhu Wei has been flying for nearly ten years, from a lieutenant to a major, flying through all models of primary education aircraft and higher education aircraft, as well as J-6, J-7, and J-8. The troops wanted to modify the J-11b. He was the best among them. He could have modified it in the first batch, but the superiors hoped that he could turn around and fly the J-8fr. He agreed without any hesitation.

From Li Zhan's perspective, Zhu Wei gave up the lever fee of 900 yuan per hour and willingly flew 600 yuan per hour.

From personal wishes, Zhu Wei definitely hopes to fly third-generation aircraft, and who doesn’t want to fly the most advanced fighter aircraft. No matter how well the J-8fr is modified, it is also a second-generation aircraft platform, and it feels completely different.

However, soldiers are obeying orders as their duty, and soldiers must have a spirit of dedication.

Zhu Wei is very clear about the reason why Li Zhan insists on doing flight tests. If he were to do it, he might have the same requirements. To carry out such a long-distance reconnaissance training operation, you must have more knowledge of the performance of the fighter jets, and the human-machine should be integrated as much as possible, otherwise it will be very dangerous to encounter emergencies.

After a few minutes of level flight, Li Zhan began to dive and turned on the afterburner. The optimal flight altitude of the maximum speed is about 12,000 meters, which is the best cruise altitude. While turning on the afterburner, the acceleration time can be minimized.

As for overload, as long as it does not exceed nine g, Li Zhan can withstand it, and ten g can barely last for more than ten seconds. It is very impressive for ordinary pilots to withstand seven or eight.

The fighter broke through the sound barrier, and the sound of the fuselage rubbing against the air completely overshadowed the sound of the engine. The ground could clearly hear the rumbling sound of thunder, but the fighter could not be seen.

The airspeed reaches 1,500 kilometers per hour and the acceleration is getting faster and faster.

Li Zhan was pressed on the back of the seat, his eyes widened, and his chest seemed to be pressing on a huge rock.

When the sea was 15,000, Li Zhan slowly leveled the fighter. At such a high speed, every operation must be gentle, otherwise it will be easy to stall. After the level flight is restored, the sea was 12,000 meters. After closing the afterburner, the fighter was still accelerating tenaciously. Occasionally, a strong air flowed over, and the fighter bumped violently, but his posture remained stable.

After changing the J-10's flight control system, it is indeed different. It is easier to drive and control the flight attitude can be more accurate. To be precise, it is not transplanting the entire flight control system of the J-10, but using the J-10's flight control system as the basis and making necessary changes based on the actual situation of the J-8fr. Relatively speaking, there is still a gap between the J-8fr's flight control and the J-10.

But it is much better than the su-27sk. Li Zhan's feelings are quite obvious, and his understanding of flight control of the early models of flankers has become clearer.

Alas, I still have to change to a new plane, the old flanker is no longer able to do it.

The 101 J-8fr, which has consumed most of the fuel, is in the most favorable state of rapid flight. The slender fuselage pierces the air like a sharp arrow, leaving the roar of the engine far behind.

After the acceleration gradually disappeared, the airspeed was frozen at a position of 2,200 kilometers per hour. Then Li Zhan was surprised to find that the fighter had maintained this speed for more than ten minutes. He once again confirmed that the afterburner was closed. This means that the J-8fr has a certain supersonic cruise capability and a supersonic cruise of two Mach. He wanted to see how long it could maintain the flight speed, but Nankutatai called him back, and the civil aviation route was ahead. Unconsciously, he was almost flying to the western edge of the basin bottom.

Li Zhan was helpless and prepared to return, and the speed of the fighter began to drop significantly at this time. Li Zhan was not disappointed. Being able to cruise at supersonic for more than ten minutes is already a good performance. Many current third-generation aircraft cannot cruise at a speed of Mach 2 for more than ten minutes.

The so-called supersonic cruise is that fighter jets can continue to fly at supersonic speed without turning on after-force. Currently, only f-22a can do it. All other fighter jets must turn on after-force to break through the sound barrier and exceed the speed of sound.

Eighth Master still has commendable performance.

Li Zhan turned around and returned, calculated the flight distance of the fuel allowance, and decisively turned on the afterburner again, pushing the fighter that had just dropped to the subsonic speed and flew forward again for more than ten minutes. Then the pressurized rod quickly lowered the altitude and went down to a height of 200 meters, deep in the desert. After he maintained the altitude for more than ten minutes, he turned on the afterburner again, accelerating the fighter at a low altitude to a speed of more than one Mach, and flying at a low altitude supersonic speed...

In the vast and flat desert, the huge noise generated by the low-altitude supersonic flight of a beautiful man in the air hit the ground. Some wild animals were frightened and ran wildly. Several of them were stunned and fell to the ground. The poachers who were ambushing not far away opened their mouths and watched a domineering fighter plane flying over. The huge sound waves entered their ears and knocked their eardrums. Then they fainted and fell to the ground without any hesitation.

Li Zhan was very satisfied with the new J-8fr and returned to the ground after returning to normal cruise speed, leaving behind a mess of poaching scenes. Until the forest police arrived, the poachers were still unconscious.

Li Zhan is still very sensible. There is a national forest reserve in front of him, with many wild animals, so he cannot fly over at supersonic speeds.

Zhu Wei on the tower watched the No. 101 J-8fr landing lightly, and his heart finally let go. He didn't know whether it was a good or a bad thing to ask the old captain to take action. After all, this reconnaissance training mission is very important...
Chapter completed!