On this earth, in addition to more than a dozen developed countries such as the United States, the Soviet Union, the United Kingdom, and France, there are more than 100 underdeveloped countries and developing countries.

When Huaxia developed the Jian-7 fighter, North Korea, Pakistan, Ethiopia, Tanzania, Zambia, and other countries that maintained close and friendly relations with China all submitted applications for procurement and import.

Now that there is a second-generation semi-multi-role fighter that can be used as both an air-to-air fighter and a ground-attack aircraft, and the low grid is one percent higher than that of the Jian-7, these countries will of course choose a new fighter with more comprehensive combat functions.

After careful consideration, Yang Weiping made a decision, looked at Lu Xiaopeng and Yong Zhengqiu, and said solemnly: "In this way, Lu Lao, Chief Engineer Yong, Qiang 5 B1 will be used as a special export fighter model in the future, and you can now discharge the production plan of 500 aircraft."

As China's first light carrier-based aircraft, the Qiang-5 B2 can first produce 150 aircraft and hand them over to the navy. In addition, I suggest that you consider developing a special carrier-based aircraft trainer aircraft on the basis of the Strong 5 B2. I believe that with the superior performance of the Qiang-5 B2, it will certainly be able to win the favor of foreign armies and navies in the carrier-based aircraft training aircraft market. ”

"Mm-hmm! Director Yang, that's what we're thinking about. Yongzhengqiu nodded and said: "When refitting the Qiangwu B2, Comrade Shi Ping, who is responsible for the development and development of the K8 training aircraft in our factory, put forward a suggestion that the carrier-based aircraft also needs a trainer type. He has already combined the development of the K8 trainer and the Qiang-5 B2 trainer, and has now produced the first verification aircraft, and it is estimated that the first batch of five prototypes will be produced in three months at most!"

When the development of the K8 training aircraft was handed over to the Fourth Airlines, Yang Weiping designated Shi Ping as the chief designer of the K8. Now it seems that Shi Ping, as the father of the previous Huaxia K8 training aircraft, has his vision and talent in aircraft design. Sure enough, it's different.

Maybe Shiping may have designed a new K8 training aircraft on the basis of the Qiangwu B2 carrier-based aircraft!

"Oh, how is the performance of this trainer?" Yang Weiping asked with great interest.

Yong Zhengqiu replied without hesitation: "The wingspan is 9.72 meters, and the length of the aircraft is 16.65 meters." The height of the aircraft is 4.58 meters, the maximum take-off weight is 12.6 tons, the thrust-to-weight ratio is 7.2, and the practical ceiling is 16,800 meters. The maximum level flight speed is Mach 1.8, the cruising speed is Mach 0.9, and the maximum range is 2,400 kilometers. The battery life is 6 hours and 45 minutes!"

Hearing this range and endurance, although Yang Weiping has not seen the actual object of this training aircraft, it can definitely be the result of using its strong take-off weight to increase the capacity and weight of fuel tanks and auxiliary fuel tanks.

This training aircraft is enough to be used as an advanced training aircraft, and it can also be used as a land-based and carrier-based aircraft.

"Very good! When the prototype comes out, I will definitely go to ask for and celebrate your merits!" Yang Weiping said happily.

"Director Yang. Or is it the concept that you proposed to design the aircraft with corresponding functions according to the engine!" Lu Xiaopeng looked at Yang Weiping with admiration and said: "The newly developed WS6-H1-1042 turbofan engine is much stronger than the previous WP6A in all aspects. It is precisely because of this excellent small thrust turbofan that we have taken a lot of detours in the design and development process of the training aircraft. ”

For Lu Xiaopeng's compliment, Yang Weiping didn't feel anything to be proud of. Without a group of outstanding dedicated and patriotic aircraft designers such as Lu Xiaopeng, Yong Zhengqiu, Shi Ping, and Wang Chun, it would not be enough to have an engine.

The WS6-H1 core machine has now been finalized. After the successful development of WS6-H1-1042 military small thrust turbofan, the research of WS6-H1-1088 military medium thrust turbofan is also underway, and the first prototype has been manufactured, various tests are underway, and its internal structure is further optimized and improved.

Under the wise and correct leadership of Director Yang, China's aero-engine industry has completely corrected itself from the Soviet model in the past and stepped onto the right track of rapid development.

Speaking from the bottom of their hearts, for Director Yang handing over the development of the K8 trainer to Shi Ping, deputy chief engineer of the Fourth Aviation Group, Lu Xiaopeng and Yong Zhengqiu were still not very relieved that Shi Ping, who had never independently designed any model and was only 45 years old.

However, facts have proved that Director Yang's vision of recognizing and employing people is indeed unique. It is no wonder that the Central Committee let him take on the important responsibilities of the country at such a young age.

The production of the J-5 attack aircraft has been completely discontinued, and the production line has been adjusted to the production of the J-5 B1 and B2, as well as the new K8 training aircraft. Thinking that the first, second, and third airlines were all designing real third-generation large aircraft and fighters, Lu Xiaopeng felt that he was fully capable of designing a better aircraft.

Based on this idea, he took the initiative to apply to Director Yang and asked the Commission of Science, Technology and Industry for National Defense to issue a new aircraft design task to the Fourth Airlines.

"Director Yang, I think we still have potential to tap into the design ability of our four airlines. Lu Xiaopeng Zhengse said: "The research and design work of the carrier-based type of the strong five can now come to an end, and the main design tasks of the new K8 training aircraft have also been completed, and only need to wait for the prototype to be produced, and then make some details of the improvement and improvement."

We have also completed the reverse mapping of the UH60 Black Hawk helicopter and AH1W gunship, and have learned and accumulated a lot of skills and experience in helicopter design. When China's self-developed turboshaft engine is developed, our Zhijiu Jin Crossbow and Wuzhi Ten Longbow can be put into mass production at any time.

I heard that in the process of designing the Jian-15 Haidongqing, the Third Airlines encountered many problems. I think, is it possible that our Fourth Airlines can also participate in the design and development of the Jian-15 Haidongqing? Let us compare the two of us to see who can produce the fastest results and whose design is better!"

Listening to Academician Landing's request to take the initiative to ask for battle, Yang Weiping was of course very pleased.

There is competition, there is comparison, there is pressure, there is motivation!

J-15 Haidongqing is an imitation of the French company Dassault has not yet completed the design of the Rafale. Against the wind, Yang Weiping only has an understanding of its appearance, related technical parameters and aerodynamic layout. But the internal structure of the Rafale is more ambiguous.

Allowing the four airlines to participate in the research and development of the Jian-15 Haidongqing may form a positive competition mechanism among the four major aviation groups of the first, second, third and fourth airlines.

"Mr. Lu, of course I believe very much in the design ability of the Fourth Airlines. Yang Weiping said as he got up and walked behind the desk. took out a document from the safe, handed it to Lu Xiaopeng, and continued: "This is the prototype parameters of the WS6-H1-1088 military medium thrust turbofan engine under development.

J15 Haidongqing. It is based on this medium-thrust turbofan that it is developed and designed. This military medium thrust turbofan has a maximum afterburner thrust of 8427daN, an intermediate thrust of 4952daN, and an afterburner fuel consumption rate of 1.8. THE INTERMEDIATE FUEL CONSUMPTION RATE IS 0.875, THE THRUST-TO-WEIGHT RATIO IS 9.0, AND THE AIR FLOW RATE IS 65KG/S. THE BYPASS RATIO IS 0.5, THE TOTAL BOOST RATIO IS 25.4, THE TURBINE INLET TEMPERATURE IS 1547 DEGREES, THE MAXIMUM DIAMETER IS 985MM, THE INLET DIAMETER IS 685MM, THE LENGTH IS 3558MM, AND THE TOTAL WEIGHT IS 835KG.

The J-15 Haidongqing adopts a delta wing with an active integrated front wing. The congenitally unstable aerodynamic layout can achieve the purpose of having high maneuverability and agility while maintaining flight stability, and can make +9G and -3.6G maneuvers. The delta wing with the active integrated front wing can increase lift at low to supersonic speeds, which improves the J-15's maneuverability at low to supersonic. It is also conducive to supersonic cruise and increases the carrying capacity of ammunition and fuel.

The length of the aircraft is 15.27 meters, the wingspan is 10.80 meters, the height is 5.34 meters, and the wing area is 45.7 square meters. The power system adopts two WS6-H1-1088 medium-thrust turbofans, with a maximum speed of Mach 1.85, a maximum range of 3,750 kilometers, a combat radius of 1,920 kilometers, a practical ceiling of 16,800 meters, and a climb rate of Mach 0.98. ”

"Director Yang, that's the case, I want to ask, in the development process of the J-15 Haidongqing, is there anything that needs special attention, such as the use of materials and technological processes, is there any tricks, or special technical solutions...... etc." Lu Xiaopeng took advantage of Director Yang to pick up a cigarette and light a cigarette, and hurriedly said the key points he wanted to know the most, because these technical parameters, when the J-15 project was established, he participated in it, and he still knew the Tao more comprehensively.

"What should you pay attention to?" Yang Weiping replied in a daze, giving an answer that made Academician Lu quite depressed, and after taking two puffs of cigarettes, he suddenly slapped his head, as if he suddenly thought of something, "By the way, there is really something I forgot to say." ”

Lu Xiaopeng hurriedly asked excitedly: "Are there any key points that need special attention in the design process?"

In consideration of the design and manufacturing capabilities of China's aviation industry, he divided this major task related to the advanced fighters of the third battle of the Chinese Air Force into two and handed them over to the Second and Third Aeroclines respectively.

Another J-14 Raptor is based on the US Navy F14A for imitation and improvement, which is not very difficult. The J-10 Peng Bird and the J-11 Golden Eagle also have very detailed design drawings, as well as a number of key points that need special attention during the design process.

Only this Jian-15 Hai Dongqing, he only drew a three-view with appearance data, as well as a general plan of the aerodynamic layout of the fuselage. For the delta wing with the active integrated front wing, Lu Xiaopeng was stunned when he saw this design.

Because of the integrated processing technology of wing and fuselage integration, China has not even solved the simplest small single-wing embedded processing technology, and now it is necessary to use what active integrated front wing is required for the main wing with a wing area of 45.7 square meters, and there is a name for the near-coupled front wing, this design scheme is not at all the existing processing technology of each aircraft factory can be solved.

The most important thing is that this kind of design, Director Yang had failed when he was in charge of the design of the advanced fighter with stealth function and supersonic cruise in the second airline.

This time, Director Yang insisted on getting this Jian-15 Haidongqing out, which made Lu Xiaopeng take it for granted that Director Yang must have found a solution. Otherwise, the design would be a bit too rash.

Director Yang said happily: "What I want to say is that it is only the pre-research and trial production stage, so the main purpose is to test whether we have the ability to design a third-generation advanced fighter that is the most first-class in the world today."

So, in fact, you don't have to be limited to the design draft and technical parameters I gave, as long as you can design an excellent fighter for the Navy that can match the J-14 Raptor high and low. The aircraft design does not need to be conventional, as long as it can be based on the WS6-H1-1088 thrust turbofan, a fighter that can give full play to the maximum effect of this engine. ”

After Lu Xiaopeng and Yongzheng Qiu heard this, they immediately stood dumbfounded.

There are really no rules for aircraft design, but for the sake of comparison, it is common to use the same model of aircraft as a reference. The object of comparison between Lu Xiaopeng and the designers of the three airlines is the F15 currently in service in the US Air Force.

The F15 is also a single-seat, twin-engine supersonic fighter. But the problem is that the F15 uses two high-thrust military turbofans, which is relatively similar to the design concept of the J-11 Golden Eagle.

However, the design scheme proposed by Director Yang is to use two military turbofan engines with medium thrust, and its innovation is that the delta wing is combined with the active integrated front wing aerodynamic layout. However, China is now unable to achieve even a simple monowing fusion, which of course poses a big problem for the three airlines.

Lu Xiaopeng originally wanted to take the opportunity to report to the Commission of Science, Technology and Industry for National Defense this time to ask Director Yang for a plan to win a new production task for the Fourth Airlines, but he never thought that Director Yang gave him such an answer that made him smile bitterly.

You don't need to be limited to the design scheme he provides, what kind of solution is this!

If you must provide the Navy's J-14 Raptor with a twin-engine single-seat fighter with high and low matching, the Qiang-5 B2 that we have successfully developed now can be used!

Why do we have to develop another twin-engine, single-seat fighter with two medium-thrust military turbofans?

In terms of the comprehensive performance of the aircraft, our Qiang-5 B2 is not worse than the design requirements of the J-15 Haidongqing in terms of practical ceiling, maximum flight speed, and climb rate, of course, it is too far from the requirements of the J-15 in terms of maximum range and combat radius. (To be continued.) )