Now the test flight is called the J-8 daytime model, which belongs to the prototype of the J-8.

This aircraft made its first successful flight on July 5, 1969, and is still in the long test flight this year, and according to the schedule, it will end the test flight at the end of the year and finalize the production.

Originally, it was planned to be an all-weather model, but due to the progress problems of the AC power supply system and radar system, the originally planned "all-weather type" was transformed into a "daytime type" with only direct current and a rangefinder.

This is the J-8I, or J-8 all-weather version, which later became known as the J-8A. It requires the installation of electronic equipment such as the JL-7 fire control radar, the shoot-8A resight device, the fire control computer, and the missile follow-up control device, thus forming an all-weather combat capability. And some of the undesirable equipment and design on the daytime model have been improved, such as the ejection seat, which has finally been replaced, and it is no longer the kind of pit model inherited from the MiG-21.

Now, in the test flight of the J-8, the J-8I is also in full swing, and now, Mr. Gu has been appointed to undertake the development of this aircraft.

Wang Yang said this in the hope that Qin Feng could stay, and at the same time, he also hoped that Qin Feng could participate in the follow-up project of this J-8.

Qin Feng shook his head helplessly: "Let's change the head, this head, I don't know when it will be improved." ”

Looking at the nose of the plane at this time, Qin Feng suddenly had the feeling of wanting to cry without tears, this flight, knocked down the MiG-21, he and this plane have formed a deep friendship, if you want to leave, it is really reluctant, but, thinking about the research for a long time, it is still backward goods, Qin Feng feels unwilling.

Thinking about the new model of fighters of the 611 Institute, Qin Feng couldn't wait to go back, and he liked the project of the 611 Institute more.

Although there is a demand now, it is also because our own electronic technology is not up to standard, and the radar and missile equipment are not advanced enough; if we have advanced radar and missiles, even if the carrier aircraft can only fly 20,000 meters, it can still shoot down a fighter plane of 30,000 meters.

What is popular in the world is the improvement of maneuverability, especially transonic maneuvering, similar to the F-16, which is the direction.

Qin Feng hesitated for a long time.

On the third day, the position of the cannon was reinforced, and when Qin Feng drove the fighter, this time he returned to the field, just passing through Chengdu.

Just when the fighter plane landed on the runway of Factory 132, because it was a secret transition, not too many people came, and Qin Feng couldn't hold back his excitement, went around Factory 132, and went straight to Institute 611.

"Old Song." Qin Feng pushed open the door and saw Song Lao, at this time, Song Lao was in a meeting with a group of technicians, he saw Qin Feng, and immediately smiled and said, "Our hero is back." ”

Hero? This time, I laid down a MiG-25 in the plateau area, although I did not publicize it externally, but internally, many people knew about it.

Hearing Song Lao say this, Qin Feng was also a little embarrassed: "That, I'm not a hero, Song Lao, are we discussing a new fighter?" ”

Looking at the people below, they are all in charge of various sub-projects, including those who are in charge of pneumatics, engines, and avionics, is this the case that the J-9 project has been promoted?

The J-8 test flight is about to be completed, and the J-9 project, which is being carried out simultaneously, should also be developed.

"It's not a new fighter, it's the progress of our J-7III project." Song Lao said.

Hearing Song Lao's words, Qin Feng suddenly felt strange, how could it be J-7III?

"What about our J-9 project?" Qin Feng asked.

J-9 project? Hearing Qin Feng's words, the faces of the people present were very strange, and in the end, it was Song Lao who spoke: "Our J-9 project has been fully contracted, and the official decision of the superiors has not yet come down, but it is certain to get off the horse, Qin Feng, you donate to our office, everyone is very grateful, but we can't ask for your money, and we know that you won't accept it, so I will send it back to your hometown." ”

Qin Feng didn't hear the money in the back clearly, because the previous words had already made Qin Feng's mind buzz.

J-9 project, dismounted?

How so? The J-9 project is our hope for the future!

"Why? Old Song, why did our J-9 project get off the horse? Qin Feng looked at Song Lao, full of questions.

yes, why did you get off the horse? Even Song Lao couldn't help but ask, J-9, as if he was his own child, he really wanted to turn this aircraft into reality step by step, but unfortunately, there was too much helplessness.

In front of Song Lao's eyes, there were scenes all of a sudden, and in the past ten years, he has almost been fighting for the J-9 project.

In 1964, at the beginning of the design of the J-9, it was established in parallel with the J-8, which was a conservative scheme and the J-9 was a bold scheme.

This aircraft is required to be designed as a medium and light air superiority fighter with a ceiling of 20,000M, a maximum Mach number of 2.2, a basic range of 2,000KM, and a weight of 10 tons, with performance equivalent to that of the American Phantom II.

At that time, Song Lao was still in the 601 Institute, and the aerodynamic team led by him proposed the aerodynamic layout scheme of the J-9, including: the swept wing with a leading edge swept 50°, the delta wing with a leading edge swept 57°, the swept wing with a leading edge swept 55° and the double delta wing scheme.

IN 1966, THE NATIONAL DEFENSE AND MILITARY DEPARTMENTS PUT FORWARD THE NEW REQUIREMENTS OF THE J-9 WITH A MAXIMUM MACH NUMBER OF 2.4, A CEILING OF 20000~21000M, A RANGE OF 3000KM, A COMBAT RADIUS OF 600KM, A MAXIMUM TIME OF 3 HOURS, AND A MAXIMUM CLIMB RATE OF 180~200M/S.

After conducting wind tunnel tests on four schemes, the 601 Institute selected the double delta wing scheme and changed the leading edge sweep angle to 55°. In this way, in addition to the air intake on both sides, the overall design of the fuselage is the same as that of the J-7 and J-8. This is mainly considered from the mastery of mature technology to improve the certainty of success. However, after wind tunnel experiments, it was found that the maneuverability was not satisfactory, so it was replaced by the new tailless delta wing scheme, namely Plan B, and the former scheme was designated as Plan A.

The B-shaped scheme with two sides of the air intake tailless delta wing shows excellent maneuverability, but at the same time, it also brings many problems such as the stiffness of the lifting aileron, the maneuvering power, and the difficulty of maneuvering.

After several years of delay, the Ministry of Aviation Industry decided to resume the development of the J-9 and proposed a scheme of normal layout delta wings with air intake on both sides.

Originally, the plan has been determined, as a result, the Air Force proposed that the double 25 is too small, should be double 26, that is, the ceiling of 20,006, M2.6 requirements, at this time, the J-9 project with the Song Lao, came to the 611 Institute, decided to use a canard design, belly or both sides of the air intake scheme. However, the ceiling index was too high for the engine to meet the requirements, and the development of the J-9B II was put on hold a year later.

In 1975, the development of the J-9 resumed again.

Intermittently until now, it has finally come to an end, because the country has changed its strategy, the focus is on economic construction, military spending has been decreasing, and the J-9 project has finally come to an end.

The J-9 project, throughout the process, has been repeated and difficult.

The 611 Institute was originally established to develop the J-9, but now, the J-9 project is gone, which is embarrassing.