Super-7 slid on the runway, Lei Qiang glanced at the familiar instruments with the afterglow of his eyes, the speed had reached the take-off speed, in yesterday, according to this speed, he pulled back the lever, and the plane followed with the nose of the plane, but just raised it yesterday, it was put down again, and today, when it was raised, it will pierce the sky.

Lei Qiang pulled back the rod, and he felt a strong lift coming, and the original flying J-7 is different, this modified fighter, although the weight has increased compared with the original, and the engine has not increased the thrust under the premise, but it feels more sensitive than the original!

Although it cannot achieve the same high angle of attack take-off ability as foreign fighters, the take-off process of the Super -7 is so smooth, which still makes Lei Qiang feel a burst of excitement, which is a bit like a fighter!

Lei Qiang glanced back from the cockpit and knew that all this was the result of the modified wing.

Compared with the original J-7, a double delta wing and a leading edge maneuverable flap are used, which is an important way to improve the maneuverability of the Super-7.

The so-called leading edge maneuvering flap, located at the leading edge of the outer wing of the wing, can rotate around the shaft formed by the four joints, and the downward deflection angle is 25 degrees. The motorized flap is sealed by the stainless steel seal sheet on the skin on the flap and the end face of the wing skin, and it is kept immobile by the contact and extrusion of the skin on the flap and the end face of the skin on the wing. In this way, the leading edge of the wing can be bent, which can realize the maneuverable load of the wing, improve the lift-to-drag ratio at high angle of attack, improve the flow of the wing surface of the fighter at the high angle of attack, reduce the downwash airflow at the flat tail, and better solve the problem of reducing the horizontal and lateral stability of the aircraft. While reducing the resistance at the high angle of attack, the jitter boundary is also increased, and the improvement of the hovering energy is particularly significant.

As soon as they flew together, Lei Qiang felt the benefits brought by the new wing, and the maneuverability was greatly improved! Smaller fighters just got more flexible!

The first test flight was just a circumnavigation of the airport, three turns and back.

When the plane climbed to 500 meters, Lei Qiang pulled the rod and pedaled the rudder and made a turn to the right.

It's just an ordinary turn, and Lei Qiang has not yet taken the surname of the plane to the extreme, and he has already deeply liked this plane.

Because, in the turn just now, the angular velocity is 14 degrees per second, which is already the maximum angular velocity of the J-72!

In close combat, the greater the angular velocity of the turn, the easier it is to point the nose at the enemy aircraft as soon as possible in a horizontal circle, winning the first chance to launch missiles! And now this super -7, compared with the prototype, has increased by nearly 50 percent, it seems that to reach the maximum turning angle speed of 22 degrees per second when designed, it should not be a problem, this hovering speed, has exceeded the F-16 fighter, even if it is close combat with F-14, it will not fall behind!

The maneuverability of close-range combat has already been reflected, and if the nose of the aircraft is equipped with a suitable radar, the combat effectiveness of the Chinese Air Force will increase exponentially!

Lei Qiang is already full of confidence in the fighter under his crotch.

(In later generations, the surname of the J-7E adopted the same improvement in the Super 7 in the text has been greatly improved, and the surname of close combat is no less than that of the third-generation fighter, and Pakistani pilots even call it the little F-16!) Lei Qiang piloted the Super 7, and after flying forward, before entering the second turn, he finally couldn't help it, skillfully pressed the lever, and made a tumbling action.

The line of heaven and earth suddenly began to rotate, and the super-7 was like a spoiled child, turning in the sky, turning a circle, Lei Qiang leveled again, and the rolling speed just now was really much faster than that of the J-7!

The people on the ground pinched a handful of sweat, Tu Jida looked at the fighter plane in the sky, as if looking at his infant child, only to see that the plane was in the process of rolling, the landing gear was not retracted, like a child kicking his legs, however, this action was not originally planned, this Lei Qiang!

The super-7 made three turns, aligned the runway, and slowly landed.

The parachute in the aft aft compartment opened, and the plane stopped.

All the designers immediately surrounded and looked at Lei Qiang who walked down from the cockpit.

"How does it feel?" Tu Jida asked.

"Tu Lao, this fighter of ours is simply too flexible! The close-range combat ability must be very good, and when it is equipped with advanced fire control, it must be the most advanced fighter in our country! ”

Hearing this, everyone present cheered, as a fighter research and development personnel, what a proud thing to be able to design a new fighter!

They were fortunate because this project, which was developed almost entirely independently, had the consent of the higher authorities and the injection of foreign funds, otherwise they would not have been able to carry out the development plan at all.

Tu Jida looked at the fighter on the runway, felt the cheers of the people around him, and was full of gratitude to the person in the Middle East, according to the other party, sure enough, the improved version of the J-7 has a higher technical level! After the turbojet 13 engine is developed and installed on the aircraft, there will be a big improvement in the surname.

In two other places in China, they were not so lucky.

Shenyang in the north is now snowing heavily and the weather is freezing.

In the Shenyang Aero Engine Research Institute, located in the suburbs of Shenyang, the atmosphere is very depressing, because the turbofan 6 they have developed after more than ten years is about to become a project to be cut because there is no installed object.

Turbofan 6 is a military afterburner twin-rotor turbofan engine with a thrust-to-weight ratio of 6 levels, which embodies the lifelong efforts of many people in Shenyang Aero Engine Research Institute. In September 1965, the program demonstration work was completed, the technical design began, and the trial production was put into operation in May 1966. In June 1968, the first testing machine began to run on the bench, but it was affected by the Cultural Revolution until October 1980, when the design target was reached. In October 1982, it passed the 24-hour pre-flight test run, and the whole aircraft was tested for a total of 334 hours.

This kind of engine has high thrust at high speed, subsonic cruising economy is good, and the starting and acceleration are fast. The rotor adopts 5 fulcrum support scheme, compact structure, reasonable layout, and more titanium alloy materials are applied. Therefore, the engine is light in weight, has a large thrust-to-weight ratio, and is not inferior to the MK-202 and M53 aero engines of the same era.

In the research and development, has overcome the starting difficulties, compressor surge, turbine inlet temperature and vibration and other problems, the main components after many modifications, tests and repeated debugging on the whole machine, a lot of work has been done, the components and the overall surname can have reached the design indicators.

This is a baby who is about to be born, but because of the disappearance of the J-6 and J-9, the country's economy is mainly turned to construction, and there is no more money to invest in such non-urgent projects.

In Shanghai in the East, people with the same fate as them are still working hard.

Ma Fengshan, director of the Shanghai Aircraft Research Institute and chief designer of the Yun-10, is still struggling for the future of the Yun-10.

As early as 1968, after the successful test flight of the H-6, Premier Zhou proposed: "Can we design a jet airliner on the basis of the H-6?" Marshal Chen Yi also said: "I, the foreign minister, cannot take my own plane when I go abroad, and my status is different from that of other countries!" ”

On August 21, 1970, the State Development Planning Commission and the Military Commission's National Defense Industry Leading Group issued a task to Shanghai Municipality to develop a large passenger aircraft and its engine, codenamed "708 Project". In September 1970, the first batch of support personnel of the Third Aircraft Department arrived in Shanghai, with Xiong Yan and Ma Fengshan as the heads of the design team, to develop China's largest transport aircraft, realizing the leapfrog development of China's transport aircraft from 10 tons to 100 tons.

The maximum take-off weight of the Yun 10 is 110 tons, the maximum cruising speed is 974 kilometers per hour, the practical ceiling is 12,000 meters, and the maximum range is 8,300 kilometers, which is the same magnitude as the Boeing 707. The localization rate of the airframe is 100 percent, in addition to the engine because the supporting turbofan 8 is still under development and has to be purchased from abroad, the localization rate of avionics and mechanical systems exceeds 96 percent, and now a total of two aircraft have been trial-produced, one for static strength test, which fully meets the design requirements, and the other has flown to many cities across the country and Lhasa several times since its first test flight in September 1980.

But now, the fate of Yun Shi has begun to change a lot, because, at the top level, a resolution is being passed to produce the American McDonnell Douglas 82 aircraft, Ma Fengshan is very sad about this, but he is still insisting.

But since the beginning of the year, the research and development funds of Yun Shi have come to a standstill, and the country is unwilling to invest in it, but would rather believe the nonsense of the Americans, even if Ma Fengshan does not serve as the chief designer of Yun Shi, he is also very disgusted with these upper-level comprador behavior, because he knows that the core technology can never be bought! Ma Fengshan actively applied to his superiors, hoping to get financial support, Yun Shi is about to succeed, and he must not let go!

At the same time, Ma Fengshan has learned that in Chengfei, they have received investment from overseas, the J-7 has been improved on a large scale, since the country is not willing to allocate funds to Yun Shi, then, if there is money from the Middle East, so that this project can be brought to life, he is also willing to give it a try!

Even the superiors of the development of military aircraft have agreed to allow overseas investment, and Ma Fengshan is very confident that the superiors will agree to this Yun-10 passenger plane, which has lost interest in the high-level level, but I don't know if the Middle East side is willing to invest?

He sent a team to Iraq, hoping to get support, and the leader of the team was Cheng Yun.

(To be continued)