At a time when AVIC Southwest's companies related to civil aviation business are preparing to deal with the technical qualification examination of the French side, a shipyard far off the coast of the Republic is seizing the golden age to complete the construction of warships in the dock when winter is approaching. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

Unlike the 20,000-ton large integrated supply ship built for Brazil in the dockyard next door, the integrated supply ship used the general section construction method from the Black Sea shipyard, which is not yet proficient, that is, the building block building method, and a 3,000-ton warship under construction in the small dock here still uses the traditional shipbuilding method.

Although the speed of this method is relatively slow, but you can't stand the small tonnage of 3,000 tons of warships built, coupled with the shipyard's high proficiency in technology, so the current hull has been roughly formed, all the construction work has been completed below the waterline, and now the vital power system hoisting work is being carried out.

The team from the 420 factory had already checked the engine mounting base of the hull and other various interfaces, and after everything was fine, they still stayed at the hull construction site, and as the engine was slowly hoisted to carry out the hull, in the communication between the on-site commander and the crane operator outside, it was finally hoisted in place.

After the first engine was fixed and installed, the second engine hoisting process was even if there was some experience, after two days of hoisting, plus more than a week of various interface docking and debugging, in the shipyard, 420 factory, the Navy shipbuilding supervision department under the joint acceptance, the final three parties in the hull power system installation part of the name and unit seal.

This also means that in the next three months, this test ship with a strong experimental nature can be launched, and it also means that the official test of the QC-160 engine for the use of power on surface ships will be launched, and the service life of this type of engine will also be started on the naval ship.

During the entire 93 years, not only AVIC Southwest, but even the whole country did not launch a few larger projects, but fortunately, AVIC Southwest here has several large projects in hand, and the development of overseas markets is also sparing no effort, so naturally AVIC Southwest wants to be good.

CG-2000 engine in the final stage of finishing work, turbofan 12 engine is put into intense testing, even the Taihang engine project in the northeast of AVIC is also in the 624 core engine test, no way, the 624 through the previous push core engine project to prove their ability, now is the domestic gas turbine technology cutting-edge, even if the northeast side to get the Taihang engine project, at this time to turn to the 624 head to help.

Coupled with the adjustment of the military and the National Aeronautics and Space Administration, now the 624 Institute also wants to open, so it no longer has the view of the gateway to fully come up with all the cutting-edge technologies of the core aircraft newly developed since the technical plan of the core machine was finalized seven years ago.

For example, in terms of high-pressure turbines in the three major components, because the turbine disc made by the 30,000-ton die forging hydraulic press in service in China is not good, it is necessary to improve the technology, and considering that the 16,000-ton hydraulic press under construction in China will have to wait for one or two years before it can be put into service, although there is no problem with the large-scale production of turbine disks in the future, but the current core engine development always needs to have finished turbine discs, right?

Therefore, the 624 Institute gave full play to the network established after Chief Engineer Liu Daxiang visited the Central Aero Engine Research Institute of the Soviet Union in 90 years, and let the Northeast of AVIC make some money to make some connections, and used the equipment inherited from the former Soviet Union by Russia to manufacture the new turbine disc, and after the new turbine disc was manufactured, it was greatly improved in terms of high temperature resistance, reliability, rough operation resistance and other characteristics compared with the turbine disc used in the previous push core machine, and when it was a thousand shots in air combat, An engine that can withstand the rough lifting bar and the durability characteristics of the engine is what military fighters need.

In contrast, the previous push core machine due to the development of the era of technology and basic industry level limitations, the final development of the high-pressure turbine in the rough operation and other aspects are not ideal, although everyone is unwilling to admit it, but the fact is that the core machine at this time is used for civil aviation engines, or to the ground, sea attack more overload is not too changeable. It can be used as a combat attack aircraft, but if it is used as an air superiority aircraft that often performs large overload maneuvers, of course, there are still some shortcomings.

Specifically, the current push core aircraft is similar to the American F-110 in terms of rough operation resistance, and the core aircraft used by the F-110 is the same design as the F-101, which is used as a bomber, and it is not too suitable for the rough operation of fighters when it is still in the womb, so this is far from the F-100 engine, and the F-100 is directly positioned for fighter use from the beginning. Therefore, whether it is the core machine or other components, the rough operation characteristics are quite good, which is why after the reliability of the F-100, the US military still has to purchase the F-100 in large quantities instead of the F-110.

The current push core machine is indeed not very good in rough operation, but this is still a little different from the F-110 when summing up the reason, although the problem symptoms of the two engines are similar, but one is brought by the early mother's womb, and this is not taken into account at all in the design, so it is a congenital deficiency.

The core machine is because the simple high-pressure turbine manufacturing process is not suitable, but the design of the core machine is completely no problem, so it is an acquired problem, as long as the later production process goes up, it can be a spicy medium push engine, but this will at least wait until the next turbofan 12 engine to improve the design can be solved.

After the problem of the turbine disc was solved by half, coupled with the high-temperature coating scientific research team dug from Ukraine a few years ago, they also creatively used the electron beam physical vapor deposition technology from the Barton Welding Institute in Ukraine to make a breakthrough in the preparation of the coating process of DD-3 single crystal, and the high-temperature resistance of the turbine blade has been greatly improved again, and the technology has never been used in the coating process of high-temperature turbine blades of aero engines in the world before. This technology has worked wonders even in the next two generations of monocrystals.

The electron beam welding process, which also comes from Barton Welding, directly completes the integrated assembly of the turbine disc made by the new process and the turbine blades with the new coating through welding, and the new turbine disc quickly showed quite good performance in the test, and the total temperature before the turbine directly reached 1370 degrees Celsius, which is close to 100 degrees Celsius higher than the 1280 degrees Celsius of the previous middle thrust core machine, and the total temperature of the front turbine has reached the same level as that of F-110. Moreover, the new process also completely solves the problem of the lack of rough resistance of high-pressure turbines.

So at this time, because of the inextricable relationship between Taihang and F-110, in fact, it is not a process problem that restricts the rough resistance of Taihang in the later stage, but a design problem, but now there is no turnaround, and when it comes to the 624 Institute, because it is required to develop the core machine of Taihang on the basis of the core aircraft of F-110 according to the specific national conditions of China, Chief Engineer Wu simply did not do it endlessly, and took the opportunity to directly carry out a major operation on the core machine. Anyway, the amount of surgery to adapt the core machine to the domestic industrial base is not small.

Therefore, this time in the 624 Institute of development of the Taihang core machine, although there is a strong F-110 shadow when it comes in, but when it comes to going out, I am afraid that it will not have much to do with the F-110 directly, you say that the 624 Institute gave the big push enlarged version of the core machine under the guise of Taihang, or the magic changed the core machine, anyway, this time the Taihang core machine is the absolute work of conscience of the 624. (To be continued.) )