The rise of great powers: starting from military industry

Training aircraft can be said to be the foundation of an aviation unit!

China has two types of trainer aircraft, one is the ‘Song of the Swallow’ CJ-6, and the other is the ‘Pesticide Machine’ YJ-5.

The ‘CJ-6’ trainer aircraft was charged in 1958 and was manufactured by Hongdu Aviation Industry to replace the Yak-15. The ‘CJ-6’ trainer aircraft adopts a front three-point, metal thin-skin semi-monocoque structure, with a maximum level flight speed of 287 kilometers per hour and a range of 640 kilometers.

The only drawback is that the ‘CJ-6’ trainer aircraft weighs more than 1 ton, but the engine power is only 300 horsepower.

‘YJ-5’, also known as ‘Yun-5 Ding’, is a pilot trainer aircraft modified by Factory 320 on the Y-5 aircraft at the request of the Air Force, with communication, aiming and bombing equipment added.

In addition to these two trainer aircraft, Guizhou Aircraft is developing the ‘JJ-7’ advanced trainer aircraft, which made its first flight in 1985; Hongdu Aviation Industry is cooperating with Pakistan to develop the ‘K8’ trainer aircraft.

Liu Tao went to Guifei in person, and then saw the "J-7". The "J-7" that is about to be finalized looks quite similar to the J-7, but think about it, it will be next year. The "J-7" was originally developed based on the J-7 as a two-seat advanced jet trainer. It is normal if it looks like it, and it is abnormal if it does not look like it.

Yu Ximing, chief designer of the First Design Institute of Guifei, explained it to Liu Tao in person. Yu Ximing is also the chief designer of the "J-7".

"The J-7 uses a triangular wing with a small aspect ratio and a large swept angle, a large slender fuselage with a nose air intake, a fully swept horizontal wing and a receding flap. The wing leading edge has a swept angle 57°, relative thickness wing root 4.2%, wing tip 5.0%, airfoil is ЦАГИ-C9C double convex supersonic symmetrical airfoil. "Yu Ximing introduced the aerodynamic layout of the J-7, "The J-7 aircraft has a two-seat cockpit, the canopy opens to the right, and the rear seat is the instructor's cockpit. The rear cockpit is equipped with a periscope and an in-flight communication system to facilitate communication between students and instructors. On-board control and information display The J-7 system equipped in batches is equipped with one set in the front and rear cabins, and the main wheels use tubeless tires. "

"In addition, it is also equipped with a flight fault simulation system and a flight status recorder. The former is operated by the instructor and can easily simulate the faults that may be encountered in various flight states. The latter is used to record the actual aircraft. The actual flight status can be used for research and summary after returning. "

After introducing the aerodynamic layout, Yu Ximing introduced the power avionics: "The power unit uses a turbojet-7B (WP-7B) engine from the Liyang Engine Factory, with a maximum thrust of 43.15 kN and a thrust of 59.82 kN. The maximum speed is 2100 km/h and the maximum range is 1459 km. The onboard electronic equipment includes 228AE sights, CT-3 radio, BDP-4B level and LZ-2-II combined compass. "

Liu Tao nodded. The 'J-7' retains the J-7 related combat equipment and external devices, which also means that the J-7 has certain combat capabilities in addition to pilot training.

In terms of weapons, it can carry both the 'Pili' series of air-to-air missiles and rocket launchers, as well as the 30-1 type 30mm cannon.

The 'J-7' is considered an advanced trainer, filling the gap in China's lack of advanced trainers.

But to say it is good, it is far from being good.

Because the shortcomings of the 'J-7' are also obvious, its range is too short, the take-off and landing speed is too fast, the rear seat visibility is poor, and it is difficult for students to operate.

Liu Tao ordered the production of a new 'J-7', and he participated in the production process.

The resources of the entire Guizhou Aircraft Corporation are concentrated on the production of this J-7. After all, the red-headed document from above has been issued, and the entire 011 Aviation Base has been assigned to Panshan Group, and Liu Tao is their big leader.

This time, when Liu Tao and Li Weimin arrived, the first thing they did was to settle all the wages and payments owed to workers in various factories of the 011 Aviation Base, which was undoubtedly very popular.

Some factories have been in arrears of wages for a long time.

This move won the hearts of the entire 011 Aviation Base.

Not to mention, Panshan Group has a production base in Guizhou, and everyone has heard about its good treatment.

Liu Tao's words were implemented by Guizhou Aircraft Corporation without compromise.

It took a full month, with Liu Tao's participation, to produce a brand new J-7 trainer.

Liu Tao put his hand on the J-7 trainer and looked at the virtual panel in the corner of his eye.

[Item: J-7]

[Manufacturer: Liu Tao]

[Item level: LV1 (0/10)]

[Upgrade points: 300]

[Item status: intact, analyzable]

Take another look, there is no red dot on the virtual panel for the J-7, obviously this J-7 is qualified.

Looking at the manufacturer, Liu Tao was not surprised, as long as he participated, even if he participated very little, the system defaulted to him as the manufacturer.

This J-7 will be tested by the test pilot next.

And Liu Tao is learning to fly.

Only 300 upgrade points are far from enough to upgrade this J-7.

He has to fly this J-7 and accumulate experience so that he can continuously upgrade, and the upgrade points are good steel used on the blade.

Driving this J-7 personally, Liu Tao personally experienced why it is said that the J-7 is difficult to operate.

Because it is indeed difficult to operate!

Even if there were the best pilots as instructors to teach Liu Tao personally, Liu Tao would still find it difficult.

And this J-7 is specially used to train pilots for J-7 and J-8 aircraft. It is so difficult to operate, which means it is not easy to train pilots.

And the range is indeed short, with a maximum range of 1,459 kilometers. In fact, if you consider mounting weapons, the range is even less than 1,000 kilometers.

If it is in combat, it is a short-legged duck.

As for the speed, it is so-so.

Fortunately, Liu Tao just wants to fly this J-7 and accumulate experience to upgrade.

Near the Spring Festival, a hangar at the airport.

This hangar has been classified as confidential. No one can enter the hangar without Liu Tao's permission.

Liu Tao put his hand on the J-7 aircraft and looked at the virtual panel in the corner of his eye.

[Item: J-7]

[Manufacturer: Liu Tao]

[Item Level: LV1 (12000000/10)]

[Upgrade Points: 300]

[Item Status: Intact, Parsable]

"System, upgrade, upgrade direction, service life!" Liu Tao muttered.

Another thing that people criticize about the advanced trainer JJ-7 is that its service life is only 720 hours.

The reason why its service life is so low is actually because the service life of the original basic J-7 is low.

The J-7 is a Chinese imitation of the Soviet MiG-21 fighter. The original Soviet MiG-21 fighter is designed to have a service life of 1,200 hours, with a major overhaul every 500 hours, and finally ends the aircraft life after 500+500+200.

The J-7, which was formed by China's imitation of the MiG-21, has a service life of only 60% of the service life of the original Soviet MiG-21 because its materials, processing, and production technology are not as good as those of the Soviet Union.

A service life of 720 hours is definitely not acceptable for a trainer aircraft, because trainers need a long service life and a high frequency of sorties, so that they can train pilots better and faster.

Therefore, Liu Tao's first choice for upgrading the J-7 trainer aircraft is the service life of the aircraft.