Red Soviet Union

MiG 21, this backward second-generation aircraft, can it fight against the current advanced fighters? What a joke! Although I am quite satisfied with the cost-effectiveness ratio of the second-generation aircraft like the MiG 21, it is still unbelievable to say that this type of aircraft can single out the third-generation aircraft.

Needless to say, others don't believe it, even Tu Jida himself doesn't believe it at this time! Can this kind of fighter have such advanced combat effectiveness? Against the third generation machine? In China, that is MiG's mission, that is, the J-8 2, and our own J-7, which only deserves soy sauce!

The commander of the Egyptian Air Force is obviously very interested. Although after the Fourth Middle East War, Egypt acquired the Sinai Peninsula through negotiations because of its separate peace with Israel. This method caused Egypt's position in the entire Middle East to plummet, and Egypt He didn't explain anything, and just got bored to develop himself.

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

However, among the two Soviet fighters, the Su-27 is a high-end fighter. Although they are interested, the Soviets may not be willing to sell it. Regardless of what Andre said, it is not so easy to order. After all, Egypt’s withdrawal from Israel In fact, the Soviet Union was quite dissatisfied with the war. Moreover, due to limited funds in Egypt, even the MiG 29 may not have enough funds to order.

Egypt needs a new fighter that can fight against the third-generation fighters, but has a good price-performance ratio!

In fact, after learning about the needs of Egypt, the French Mirage company immediately contacted Egypt and tried its best to sell the Mirage 2000 fighter to Egypt. Egypt is very satisfied with the performance of the Mirage 2000, but the price of this aircraft , but they can only hold their pockets tightly and continue to make choices.

The MiG 29 of the Soviet Union 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. Egypt really does not have too much money. What a lot of money!

So, they were also tempted when they heard Andre say that this J-7, modified and modified, can fight against the third-generation aircraft.

Of course, Tu Keda was even more tempted, he didn't speak, and listened to Andre's continued explanation.

The biggest problem with the MiG-21 series fighters is the air intake at the nose. This method makes it impossible to place a radar with a large enough caliber, and thus loses the capability of medium-range air combat. In the current era, medium-range air combat is already a The standard style of air combat, and without advanced radar, it will lack the ability to perceive the surrounding airspace. Andre said: So, we can improve the MiG 21 fighter, changing the nose air intake to In this way, the precious space in the nose is vacated, and a large radar can be installed to obtain the capability of medium-range air combat.

Change the nose! If you want the J-7 to have a good combat capability, you must improve the nose! Historically, this improvement for the J-7 was only started in 1996. At that time, the J-7fs was designed, which was the way of intake air under the chin, and the J-7mf was changed to the belly intake, which completely solved the problem of air intake. head problem.

In the past, the radar could only be installed in the rectifier cone of the air inlet, so the size of the radar scanning antenna was strictly limited. If it was too large, the air intake would be reduced, which could not meet the normal working requirements of the engine. The J-7m brought in uses GEC Marconi's Air Patrol 226 fire control radar. The range of action is basically about 20 kilometers. Air combat capability, in the final analysis, this radar is just to help short-range missiles and even machine guns better aim at the target.

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

Change the nose! this idea,

In fact, it has already appeared in Tu Jida's mind, but now the improvement of our own J-7m is a trivial matter, and if it is improved to the air intake of the nose, it will be a major operation! Cheng Fei doesn't have enough funds to make such a fuss, and now there is no suitable radar replacement!

Marconi's radar is not suitable, and we have to find a new radar. Moreover, the nose of the aircraft becomes larger and the center of gravity of the whole aircraft moves forward, so it has to be rebalanced. The workload is not ordinary!

Even in the discussion of the new model, we have model design for the ventral air intake scheme and have conducted wind tunnel experiments, but it is still a huge workload to actually deal with it.

The MiG 21 appeared in the 1960s. The design at that time was indeed outdated. Therefore, in addition to the improvement of the nose, we can also consider improving the airfoil of the MiG 21 and use advanced aerodynamic technology to make this aircraft The combat performance has been raised to a higher level. Andre said.

Want to change the wings? Tu Jida's brows gradually frowned. Is this a new design for a plane?

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 costs are low. It is convenient for logistical maintenance. At this moment, the commander of the Egyptian Air Force said: No matter how the nose and wings of this J-7 are improved, if the engine is not replaced, it will still be unsatisfactory.

Turbofan engine! Through the front fan, air is blown to the external duct, which directly turns into thrust, which greatly reduces fuel consumption. This is the trend in the development of military aircraft in the world. Today's advanced third-generation aircraft are all using turbofan engines.

If the J-7 doesn't change the turbofan engine, then the performance will still not improve!

This question is very good! If you only value the initial purchase cost, then the turbojet engine is very cheap. If you value the cost during the entire service period, the turbofan is a better choice. In fact, adding a turbofan to the J-7 It is not difficult. Our rd33 engine can be installed on the J-7, which can greatly improve the performance. At the same time, the fuel consumption rate is greatly reduced, and the range of the J-7 can be increased. As long as the rear fuselage is modified, there will be no problem.

Hearing this, Tu Jida finally took a deep breath, General Andre, you said it so easily, do you think it is building blocks? (To be continued.)

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