The current Sabbatarian has been able to copy the F-4 and F-5, but they have no way to copy the F-14.

If this is because the F-14 uses a large number of titanium alloys and composite materials, these technical experts in the country of rest do not dare to move casually.

The Tomcat fighter wing box is very wide, forming an appearance similar to the wing-body fusion The whole fuselage is a lifting body, the wing box is located at the back of the aircraft, it is a box-shaped structure with a complex structure, and the two ends accommodate the variable wing wing root shaft, this part is the focus of the variable wing design aircraft, and it is also the source of the dead weight of the aircraft.

Grumman uses high-strength and light-weight titanium alloys, which cannot be welded using conventional methods, and vacuum electron beam welding technology has also been developed for this purpose. In addition to the load-bearing capacity, the wing box also constitutes an integral fuel tank.

At the beginning, for Grumman, the welding of this titanium alloy wing box determined the success or failure of the entire project.

Because the titanium wing box is a timeless design, it consists of precision-machined titanium components, including forgings and plates, which require more than 70 individual electron beam welds with a total length of 46 meters.

In order to weld these components, Grumman developed its own vacuum electron beam welding technology, and finally created a powerful fighter, which is now a very high-end processing technology, and such special equipment is impossible to buy.

This titanium alloy wing box is also the strongest part on the F-14, in many F-14 crashes, only the wing box has been well preserved, which is also the reason why it is difficult for other countries to imitate the Tomcat, this titanium alloy wing box alone has stumped other countries.

Huaxing Group has developed its own vacuum electron beam welding special equipment for welding the hot end parts of the combustion chamber of aero engines, and the metallurgical plant of Huaxing Group has its own ilmenite, and there is a complete industry from mineral processing and smelting, because the output of titanium alloy is very large, and the cost is much lower than that on the market, so Huaxing Group is widely used.

This time the rest of the country took the initiative to hand over the Tomcat fighter to Huake Aviation Technology Company for upgrading, Huake Aviation Technology Company is really a big change, because a lot of mechanical and hydraulic control systems have been removed, the fuselage has been vacated a lot of space, Huake Aviation Technology Company has modified the wing box this time, the variable wing size has been shortened, and more space has been vacated for the weapon pylon, for which the flight control system has been modified.

Because the sweep angle of the wing is variable, the pylon under the wing cannot be installed under the wing in a fixed way, otherwise the pointing of the weapon cannot be consistent with the pointing of the nose.

In order to hang more weapons, the design team led by Zhang Hong also operated on the Tomcat fighter, and now only Huake Aviation Technology Company dares to do this in China.

It's really in response to that sentence: there is technical capriciousness!

Because Yang Jie himself is a technical freak and is not short of money, he naturally supports Zhang Hong and others to use their imagination to perform a major operation on the tomcat, not to mention that the body structure has moved, and even the brain has been replaced.

In addition, Huake Aviation Technology Co., Ltd. has also learned a lot of things by upgrading the Tomcat fighter, the most important of which is the design and manufacture of wing boxes, landing hooks, and landing gear.

Because the F-14 Tomcat fighter was a carrier-based aircraft before, Grumman made money by delivering 79 Tomcat fighters to the Sabbat, so the delivery to the Sabbath country was not a monkey version, and the performance was exactly the same as that used by the Navy of country A, and even the ship hook was not canceled.

Compared with the aircraft on land, the carrier-based aircraft has to pay extra weight, and its overall design should take into account the humidity of the sea environment and the need for anti-corrosion, which will bring structural weight gain, and the largest increase in weight has to be said to be its landing gear and landing hook.

When it lands, each landing is equivalent to an impact, the landing gear must be strengthened, and an additional hook has been added to the tail to hook the arresting cable, which is different from land aircraft.

While upgrading the Tomcat, Huake Aviation Technology Company naturally researched and imitated the landing gear and landing hook.

Huaxing Group has a large number of engineering and technical experts, as long as these things are dismantled for various analysis, the design ideas of these systems will naturally be thoroughly understood, and technical improvements have been made on this, using Huaxing Group's own materials and components, and changed to an electro-hydraulic system, which also greatly reduces the weight of the landing gear, and also frees up a lot of space.

The technical team led by Zhang Hong was originally brought out by Chief Master Lu, and he has a deep foundation in the research and development of rear variable swept wing technology, after all, he has also built ten prototypes of rear variable swept wing before!

Over the years, Huaxingji Company has been engaged in material technology and material preparation and processing in recent years, on the one hand, through independent research and development, and on the other hand, it has carried out overseas mergers and acquisitions and technology introduction, which has almost made up for its shortcomings.

Now Yang Jie also dares to say what kind of weapons and equipment Grumman can make now, and Huaxing Group can also make such a thing, which is also where Zhang Hong and others are so bold.

The rest country has been embargoed and sanctioned by country A over the years, and at the same time, NATO countries have also embargoed them under the pressure of country A.

Especially since last year, even country A has asked to buy lithography machines, and the rabbit's weapons and equipment have shined in the Middle East, which has made these Western countries very confused, and at the same time, the rabbit's attitude towards the outside world has changed greatly.

This time, the rabbit of country A clearly opposed the resolution on sanctions against the resting countries proposed by the Security Council, and turned a deaf ear to the criticism and accusations of country A.

Besides, the rabbits had also exported a large amount of weapons and equipment to the Sabbath country before, and now the Sabbath country is constantly purchasing weapons from the rabbits, and there is absolutely no reason not to do this business!

Everyone is playing the game of "proxy war", but before the rabbit was weak and the weapons and equipment were very poor, and there was no qualification to play the chess pieces on this chessboard, but now it is different, by providing weapons and equipment to the rest country, the original regional pattern balance can be broken, so that country A can take care of one and lose the other, which is also what the rabbit is very happy to see.