The design of this Super Seven is completely different from the upper plane, which is the fuselage and wings have been made medium-scale improvements.

After all, the F-404 engine was planned at that time, and in terms of size, that guy was actually about the same as the turbojet 7/13 series, and the thrust was only 7.3 tons, which was not at the same level as the MK104 model of the RB-199, so it could only be fully optimized.

The current Super Seven is different, thanks to the strong thrust and ultra-short length of the RB-199, which can directly leave more space in the middle of the fuselage, which can allow the rear wheel nacelles to move to the rear of the fuselage, leaving all the space in the front two-thirds of the inside of the wing, which is enough to design a heavy-duty hardpoint located on the inside of the wing.

Since there is no need to make major changes to the fuselage mechanism, the entire design team has been working on the wings, with double delta wings, front/trailing edge maneuvering flaps, and overall wing fuel tanks, almost directly replacing the aircraft with a pair of wings, but the resulting performance improvement is also quite obvious.

First of all, the aircraft has a total of 7 hardpoints, so that it has a good multi-purpose ability, and the maneuverability is due to factors such as the lower jaw intake, maneuvering flaps, and high-thrust engines, so as to achieve comprehensive strengthening.

Due to the addition of the overall fuel tank that the J-7 series did not have before, coupled with the low fuel consumption of the RB-199, the range of the Super 7 has nearly doubled from the 1300 kilometers of the J-7, and it has reached as much as 2450 kilometers, which is also far beyond the pitiful 2100 kilometers of the double medium-thrust MiG-29 fighter.

In the future, if the design of the J-7M design is changed to the 480-liter small-volume auxiliary fuel tank design on the outer side of the wing, and replaced with the heavy-duty anchor fuel tank on the inside of the wing, the fuel load can continue to increase.

According to the American standard auxiliary fuel tank that is gradually popularized in China at this time, the smallest auxiliary fuel tank must start at least 800 liters, and the nearest belly auxiliary fuel tank of the J-7 from the ground is 720 liters, and the wing of the fighter is larger than the ground distance, usually the wing auxiliary fuel tank is larger than the belly.

Typical such as No. 10, the design of the auxiliary fuel tank mounting scheme is 800 liters of belly, and a 1700 liter big guy is hung on each side of the wing, and such as the Mirage 2000, the aircraft under the monoplane, actually directly the wing auxiliary fuel tank to 2000 liters, is simply non-human.

The space of the inner wing hardpoint of the MiG-21 series is occupied by the landing gear, resulting in waste, so it is impossible to install heavy-duty hardpoints, and the J-7 of the Republic is actually the same as the MiG-21 in the early years, and there is no wing auxiliary fuel tank.

It was all specifically requested by Jordan when it purchased the J-7M, and the 123 factory barely used the light-duty hardpoint on the outermost side of the wing to get the smallest auxiliary fuel tank in aviation history, only 480 liters.

If the super seven follows the same auxiliary fuel tank scheme as the ten, the belly is 800 liters, and each side is 1700 liters, which adds up to 4200 liters of aviation fuel, which is about 3 tons of fuel external carrying, so just the auxiliary fuel tank, the super seven can be about 2.5 tons more than the J-7.

Of course, due to the air resistance caused by the auxiliary fuel tank, if you want to convert it into the fuel effect of the internal fuel tank of the fuselage, it is more appropriate to multiply the fuel volume of the auxiliary fuel tank by 0.6.

Not counting the new auxiliary tank design, the design team was able to nearly double the range of the improved fighter based on the MiG-21 in Super Seven, which is absolutely amazing, and it is difficult for the MiG Design Bureau to achieve this height even if it is done by itself.

In the later stage, if the No. 10 auxiliary fuel tank design scheme is introduced, according to the design team's estimate, the super 7 transfer range will definitely be able to exceed 3,000 kilometers, thus becoming a long leg.

But then again, the biggest reason why the design of the Super Seven can be so bright is still due to the RB-199 engine, without which the so-called Super Seven modification is completely empty words.

Although it was also mentioned in the previous air show materials, the Soviet pilots had not yet defied the sky to the point where they could memorize the super seven range data on the air show.

They can only see with the naked eye that there is an extra pair of wing anchorage points of the super seven, and there are mobile flaps introduced, and they can roughly guess that the maneuverability of this aircraft must be good, it is definitely the top of the second-generation aircraft, and even the early third-generation aircraft can wrestle wrists.

After the Super Seven test pilots came down, the two sides shook hands politely, and the military representatives agreed that the Mao Zi pilots would enter the cockpit to have a look at the scene and experience the modern glass-based cockpit of Super Seven.

According to the design needs, Super Seven retains some commonly used mechanical instruments: airspeedometer, horizontal attitude meter, altimeter, speedometer, fuel gauge and other eight conventional flight data, because these needs ensure that the pilot can call at any time for reference, so the installation is retained in the form of mechanical instruments.

It is a normal need to keep some of the mechanical instruments, and it does not take up too much space, which is a very cost-effective design solution.

In addition to a small number of instruments, the really eye-catching part is the super seven using a flat and two down design, completely reached the mainstream level of the eighties, and all avionics equipment is domestic, the display is certainly needless to say, there is no difficulty in this, the flat display is the introduction of the J-7M project, the core of the airborne computer, data bus is provided by 607.

As soon as the plane landed, the on-board computer had not yet been turned off, and the test pilot directly stretched out his hand outside the cockpit to guide Mao Zi to operate, and demonstrated the operation process of the cockpit through the command call of the on-board computer.

The fire control system, which has already taken shape, was called out, and the missile launch procedure was briefly introduced.

With a highly automated on-board computer, the missile launch process can be much simpler, with just a few buttons pressed, the launch program is set, and the joystick launch button is pressed.

Since the test aircraft did not carry weapons, the display indicated that the missile launcher was empty, and the word "alarm" in red flashed continuously.

Maozi pilots no one spoke, because they felt the gap, and in terms of the electronic aviation industry, the Soviet Union was completely behind the times, and even behind the students of the year.

"It's very beautiful, it's like a craft, and I believe it's a very easy fighter to handle, so I'll admit that you did learn good things in some ways by working with NATO countries. ”

Unlike pilots, who focus on aircraft design, the accompanying Su-27 ground engineers are more concerned about the place.

"The design is excellent, but can you fully grasp the development and production of these equipment, the core design of which should be the secret technology of NATO countries. ”

I actually doubt the degree of localization of this set of equipment, how can this work, the foundation has invested heavily to build a complete electronic industry system, which can definitely withstand any doubts, and all super seven electronic equipment is produced independently, there is no doubt about this, Chief Tu said with pride in his tone.

"We have a complete semiconductor dust collection circuit design and production capacity, and reached the world's top level, the actual super seven is because of cost control reasons, and can not use our best technology, this is a positioning for underdeveloped countries to use low-end fighters. ”

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