How to evaluate the J 8 series fighters? What series of aircraft is the Chinese J 8?

J-8, people are often called "eight masters", this is China's independent research and development in the 60s of the last century, it can be said that it is the first independent design, and the success of the fighter, its main idea for the MiG-21 twin-engine model, in the understanding of the MiG-21 technology as the premise, emphasizing high-altitude and high-speed, the first flight in 1969, after ten years of test flight, in 1979 finalized production. Subsequently, the J-8-2 fighter was developed, which entered service in the 90s of the last century.

The technical level of the J-8 is not high, and it can be said that it lagged behind as soon as it entered service, but through the development of the deer, China's fighter research and development work has realized the transition from imitation to independent development.

An important step on the road of development is to play a role in connecting the past and the next.

J-8 has been the main fighter of our army for a long time, playing an indispensable role, so far there are still many J-8 series fighters in service, but with the consumption of service life, has entered the retirement period. At present, due to the service of a new generation of fighters, it has also been freed from air supremacy and is now mainly used as a reconnaissance aircraft to exert the rest of the heat.

Many people say that its performance is backward, in fact, this belongs to the design of the problem, emphasizing high altitude and high speed, if from the point of view of the interceptor, it is fully qualified, and quite good, but with the later fighters to take a different technical route, maybe as an air supremacy fighter is not suitable, but as a reconnaissance aircraft it seems quite good, almost a few fighters have the ability to intercept it, especially when it increases the speed by 2 times the speed of sound, and the height of 20,000 meters, it is almost to come but say freely. In 2017, its reconnaissance version even defeated the Russian reconnaissance aircraft in the competition.

Perhaps soon, the J-8 fighter will soon be retired from combat units and evolve into a reconnaissance aircraft, and in a few years, it may only be seen in museums, but as the heaviest model in the history of Chinese fighter development, we will also have the opportunity to mention it.

This series of fighters is equipped with the most advanced radar, which can distinguish the location of the enemy.

I think this fighter has very strong combat capabilities, because this fighter is very powerful.

In the modern Air Force, it must be a third-generation and a half-generation fighter, but there is room for improvement, and there is no need to improve it, temporarily as an electronic warfare aircraft, and it should be retired when the aircraft engine runs out in hours.

The J-8 series fighters are still very good, with excellent performance and good quality.

After the 70s, the design thinking of fighter jets around the world changed, no longer pursuing "higher and faster", but focusing on improving the aircraft's low- and medium-altitude maneuverability, improving the on-board electronic equipment, ** and fire control system. In order to adapt to this trend and meet the new needs of the troops' equipment, Shenfei Company developed the J-8 aircraft on the basis of the J-8. On June 12, 1984, the prototype made its first successful flight.

On March 18, 88, the design of the J-8 was finalized. On October 15 of the same year, the Military Products Finalization Committee officially approved the design of the J-8 aircraft.

The development of the J-8 focuses on the ** system, fire control system, on-board electronics and power plant. In order to provide space for the large-caliber radar antenna, the air intake method on both sides is adopted, which is also the biggest difference between the aircraft and the J-8.

The J-8 was replaced with two turbojet-13A twin-rotor engines, each with a thrust of 6,600 kg. The increase of engine thrust can improve the maneuverability of the aircraft at medium and low altitudes, and also improve the take-off and landing performance; The external plug-in has been increased to seven, which can hang a variety of ** or auxiliary fuel tanks, so that the aircraft has all-weather interception capabilities and ground attack capabilities, and is equipped with radar-guided medium-range interceptor missiles. The nose landing gear is rear-mounted with a 23mm double-barreled gun.

Collapsible pelvic fins are installed in the lower part of the tail.

There is also a big breakthrough in the body material of the J-8, which is the first time that China has used composite materials on a large area on a self-designed fighter.

In addition, on the basis of the J-8, Shenfei has successively developed improved models such as J-8IIM, J-8III, J-8D, J-8F, and J-8T, which has made a significant leap in the technical level of the J-8 prototype, and the main improvements include fire control system, power plant and supporting airborne equipment. The development plan of the J-8 aircraft highlights the performance of high altitude, high speed, increased range, improved climb rate, and enhanced firepower. In view of the shortcomings of the J-7 aircraft, it has been improved item by item, and all performance indicators have been improved

a) the maximum speed is Mach number; (2) The maximum ceiling is more than 20,000 meters; (iii) the maximum rate of climb is 200 meters per second; (4) The basic range is 1,500 km, and the maximum range is 2,000 km; (5) Stipulating the time for combat in the air at an altitude of 10,000 meters; (6) Installation of improved design of aircraft guns and air-to-air missiles; (7) Installing radars with a large search range. The J-8 aircraft adopts the aerodynamic layout form of nose air intake, large sweep angle, small aspect ratio, thin delta wing, lower flat tail, and double ventral fins. Using two turbojet 7A engines, the thrust-to-weight ratio of the aircraft is , which is better than that of the J-7 aircraft.

Technical data. Wingspan: m.

Captain: m. Machine height: meters.

Wing area: square meters.

Normal take-off weight: 13850 kg.

Maximum level flight speed: high altitude).

Practical ceiling: 20,500 meters.

Of course, the self-entertaining argument is that if other second-generation aircraft in the world are retired, the only remaining J-82 will be the world's first second-generation aircraft.

Because this aircraft absolutely does not have the ability to pick the F22 under any conditions, for example, after Ge Wenyong tested the Mirage 2000, he publicly stated in China that unless the Mirage 2000 pilot made a mistake, the J-8 could only be shot down by the opponent.

For example, the early models of F16A, MiG-29, etc., these fighters can only launch short-range missiles, and in the face of these early models of third-generation aircraft, the J-8F fighter Iramin has a huge advantage.

Of course, due to various considerations, the view on the generation difference of fighter jets was only conveyed in a small range at a higher level at that time, and the Chinese J-8 fighter has always been known as a beautiful man in the air.

The initial goal of the J-8 fighter was to catch up with and surpass the MiG-23 fighter, and it required the ability to have high altitude and high speed. This is the standard requirement of the second-generation fighter, in 1980, the missing J-8 fighter began to be delivered to the Air Force for service, the initial J-8 fighter did not have the ability to fight at night, so the improvement of the J-8 fighter was very large.

In the face of the third-generation fighters, the J-8 is not without advantages, but it needs to be treated differently, the early models of the third-generation aircraft, due to the relatively early appearance of these types of fighters, can not launch medium-range missiles.

1. Many J-8 manufacturing time is after 2000, in order to save costs, J-8 must be used to the service life, the general aircraft life is about 20 years, that is, there are at least 10 years!

2. The J-8 can also play an important role in secondary tasks, such as patrolling, photography, reconnaissance and other tasks.

3. The J-8 is not retired, and it can maintain a large number of pilots for China. (Because the replacement of the second-generation aircraft by the third-generation aircraft cannot be replaced by a one-to-one substitution, it is generally a one-to-four replacement, so that China will reduce a large number of pilots by one.) ）

4. The flight cost of the second-generation aircraft is low, and in low-level missions such as patrolling, it is much cheaper to use the J-8!

5. Generally, a part of the J-8 series will be retired every year, and by 2020, a small number of J-8 will be retained, generally no more than 200, and a small number of J-7, no more than 50! Now there are more than 800 fighters!

Many people on the Internet say that China's J-8 will not begin to be retired until after the next 20 years, that is, in 2030 Why. 4. Many J-8s were manufactured after 2000 and need to be used until they are decommissioned, or they will not be wasted. 5. Now.

In the case of the third generation aircraft, when the third-generation aircraft have not fully reached the scale, they can only rely on the second-generation aircraft with relatively small body life consumption to perform tasks, such as training patrols.

As for some people saying that the quality of the third-generation aircraft is not good, the Jian-10 is middle-class and lower-class, so they can only laugh and say nothing.

How can the current main fighter be decommissioned?

J8 is a second-generation aircraft, and the advanced national service troops at that time are all third-generation aircraft, and the gap is still very large!

There are gaps in handling, maneuverability, cockpit electronics, radar, **, power, structure, etc., and later, some improvements have been made, but the foundation is not enough to be reborn, so it is still useless!

The gap is still relatively large, but depending on how you compare, of course, the more developed Soviet Union, the United States, Europe, etc. are already the mainstream third-generation fighters, such as F-15 and Su-27, and most other countries are actually second-generation aircraft similar to J-8, and even some are still MiG-21 as the main force, it can only be said that J-8 is worse than the advanced fighters of the same era.

The J-8 itself is a high-altitude and high-speed fighter, not good at low-altitude "dog fighting", and of course, the domestic avionics are also relatively poor, for example, the radar performance is not advanced, and there is no way to achieve multi-functional (land-to-sea and air) operations.

These can't be blamed on the eighth master, after all, the eighth master is the second generation to the second generation and a half generation of fighters, there is a whole generation of gap, like the current J-20 is more advanced than most fighters of the same era.

Compared with the third-generation aircraft, the second-generation aircraft has little natural advantage. In fact, this is not the case, the J-8 is not without advantages for the third-generation aircraft, but it must also be viewed from another point of view. The early models of the third-generation aircraft appeared very early, and none of these aircraft had the ability to launch medium-range missiles, such as F16A, MiG-29, etc., and such fighters relied on launching process missiles to hit targets.

In the face of such a third-generation aircraft, the J-8F has a great advantage, that is, it can give priority to strikes at medium distances and form a preemptive strike. So from this point of view, the J-8F has obvious advantages. But for the individual models of the mid-term third-generation aircraft, there are few advantages left for it.

In the middle of the third generation aircraft already has the ability to detect at medium distances, and the maneuverability and other aspects are better than the J-8F. However, the J-8F fighter still has many merits. If the pilot plays very well, then he can still perform with the ability of the J-8F.

For example, in previous military exercises, the J-8F successfully hit the Su-30, not to mention that the Su-30 is higher than the J-8F in many technical aspects.

I think there is a big gap between the J-8 and its contemporaries.

The J-8 fighter was manufactured by China's Shenyang Aircraft Factory.

After all, technology was still relatively backward at that time.

That is, a typical second-generation aircraft, the American F16 of the same era

Russia's Su-27 is already a third-generation aircraft.

So it's a whole generation apart.

Let's put it this way, the first flight of J-8 was in six or eight years, and I didn't consider what electronic control system was at that time, because I didn't need it at the time, and then I faced the F16 Rafale Su-27, and the eighth grandfather didn't see it enough, so I changed it and installed it directly.

First, there is no money, J-10 is 200 million, J-11 is 300 million, this is not counting the cost of station construction, use and maintenance and personnel training, basically the procurement cost of a fighter only accounts for one-third of the whole life cost, you think about how much it costs to replace thousands of J-7 J-8 with J-10 J-11, astronomical.

The second is that there is no production capacity, now Chengfei produces J-10, Shenfei produces J-11, and the average two companies add up to about 60 a year, and the production capacity cannot keep up, and the engine has many problems.

The third is that there are no pilots, and now there are nearly 2,000 pilots who fly backward second-generation fighters, and these people can't drive third-generation aircraft, so they have to be trained slowly, not a handful, even if you have so many J-10 J-11s for them to drive, they won't. Similarly, in addition to pilots, the entire station support, air command, operational concepts, etc., all need time to evolve, the Air Force is a system, and fighters are only a part.

Fourth, maintain the establishment, China does not have a reserve air force like the US National Guard Air Force, so there must be an aircraft for the pilots to fly, otherwise people will retire from the army to go to civil aviation, it is not easy to train a pilot, and now there is no way to let them all fly J-10 J-11 in a short period of time, so the only way to keep the J-7 J-8 is to maintain the establishment, so that these pilots have planes to fly, and then slowly modify advanced fighters in the future.

The Chinese Air Force already has fourth- and fifth-generation fighters, why are there still a large number of old fighters such as the J-7 and J-8?