Chapter 713: The Modification of the J-7

MiG-21, this backward second-generation aircraft, can fight against the current advanced fighters? What a joke! Although I am quite satisfied with the cost-effectiveness of second-generation aircraft such as MiG-21, it is still hard to believe that this aircraft can fight against third-generation aircraft alone.

Needless to say, others did not believe it. At this time, even Tu Jida himself did not believe it! Could this fighter have such advanced combat capability? To fight against the third-generation aircraft? In China, that was the mission of the MiG-23, that is, the J-82. The J-7 on our side was only worthy of playing soy sauce!

The Egyptian Air Force Commander was obviously very interested. Although after the Fourth Middle East War, Egypt sought peace with Israel alone and took back the Sinai Peninsula through negotiations, this approach caused Egypt's status in the entire Middle East to plummet. However, Egypt did not explain anything and just focused on developing itself.

Egypt is well aware of its military gap, especially in the air force, and needs an advanced fighter to replace its old fighters. This time when they came to Moscow, they really had the need to order fighters.

However, of the two Soviet fighters, the Su-27 is a high-end aircraft. Although they are interested, the Soviets may not be willing to sell it. Although Andrei said it in a high-sounding way, it is not so easy to order it. After all, Egypt's withdrawal from the war with Israel actually made the Soviet Union quite dissatisfied. Moreover, due to limited funds, Egypt may not have enough funds to order even the MiG-29.

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Egypt needs a new fighter that can compete with the third-generation aircraft but has a good cost-effectiveness!

In fact, after learning about Egypt's needs, the French Mirage Company immediately contacted Egypt and tried its best to sell the Mirage 2000 fighter to Egypt. Egypt was very satisfied with the performance of the Mirage 2000, but for the price of this aircraft, they could only hold their pockets tight and continue to make choices.

The Soviet Union's MiG-29 is already in the export sequence. Syria, Iraq and other countries have already equipped this fighter. However, the unit price of the MiG-29 is now around 30 million rubles, and Egypt really does not have much funds!

So, when they heard Andre say that this J-7 could be modified to fight against third-generation aircraft, they also became interested.

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Tu Jida was of course even more moved. He didn't say anything and listened to Andre's continued explanation.

"The biggest problem with the MiG-21 series fighters is the nose air intake. This makes it impossible to place a radar with a large enough caliber, which means it loses the ability to engage in medium-range air combat. In today's era, medium-range air combat has become the standard style of air combat. Moreover, without advanced radar, it will lack the ability to perceive the surrounding airspace." Andre said, "So, we can improve the MiG-21 fighter and change the nose air intake to the belly air intake. In this way, the precious space in the nose can be freed up to install a large radar and gain the ability to engage in medium-range air combat."

Change the nose! If you want the J-7 to have a good combat capability, you must improve the nose! In history, this improvement of the J-7 began in 1996. At that time, the J-7FS was designed, which was the way of chin air intake, and the J-7MF was changed to belly air intake, which completely solved the problem of the nose.

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Originally, the radar could only be installed in the air intake cone, so the size of the radar scanning antenna was strictly limited. If it was too large, the air intake would be reduced and could not meet the normal working requirements of the engine. Therefore, the J-7M brought by Chengfei now uses the GEC-Marconi "Air Patrol" 226 fire control radar, which has an effective range of about 20 kilometers and can only track/attack a single target. It cannot give the fighter the ability to conduct beyond-visual-range air combat. In the final analysis, this radar is just to help close-range missiles or even machine guns better aim at the target.

"In modern fighters, high angle of attack performance is the most important, so belly air intake is the most suitable choice." Andre said: "Through such improvements, the defects of the original MiG-21 can be made up."

Change the nose! This idea actually appeared in Tu Jida's mind a long time ago, but the current improvement of the J-7M is just a minor one, and if it is improved to the nose air intake, it will be a major surgery! Chengfei does not have enough funds to do so, and there is no suitable radar replacement now!

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Marconi's radar is no longer suitable, so we have to find a new radar. Moreover, the nose of the aircraft has become larger and the center of gravity of the entire aircraft has moved forward, so it has to be rebalanced. The workload is extremely huge!

Even during the discussion of new aircraft models, we had designed a model for the belly air intake and conducted wind tunnel tests. However, the actual processing was a huge workload.

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"The MiG-21 appeared in the 1960s, and its design at the time was indeed outdated. So, in addition to improving the nose, we can also consider improving the MiG-21's wing profile and using advanced aerodynamic technology to take the aircraft's combat performance to a higher level," said Andre.

Need to modify the wings? Tu Jida's brows gradually frowned. Are they going to design a new plane?

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"General Andre, you should know that the current trend in the development of military aircraft is to use turbofan engines. Although the initial purchase cost is higher, the later use cost is low. Turbofan engines have low fuel consumption and are more convenient for logistics maintenance." At this time, the commander of the Egyptian Air Force spoke: "No matter how the nose and wings of this J-7 are improved, if the engine is not changed, it will still not be satisfactory."

Turbofan engine! The fan in front blows air into the outer duct and directly converts it into thrust, which greatly reduces fuel consumption. It is the trend of development of military aircraft in the world. Today's advanced third-generation aircraft are all using turbofan engines.

If the J-7 does not replace its turbofan engine, its performance will not improve!

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"That's a very good question! If you only focus on the initial purchase cost, then the turbojet engine is very cheap. If you focus on the cost during the entire service life, the turbofan is a better choice. In fact, it is not difficult to add a turbofan to the J-7. Our RD33 engine can be installed on the J-7, which can greatly improve the performance and greatly reduce the fuel consumption, increasing the J-7's range. As long as we modify the rear fuselage, there will be no problem."

Hearing this, Tu Jida finally took a breath and said, General Andre, you say it so easily, do you think you are playing with building blocks?