Next-generation aircraft!

Now, Huaxia has just successfully developed the third-generation fighter, that is, the Jian-10 fighter, and at this time, the West has been equipped with the third-generation fighter for nearly 20 years, and the West's next-generation fighter is about to end the competition for prototypes, and Lockheed has won.

Therefore, although Cheng Fei has just successfully developed the third-generation fighter, Mr. Song plans to hand over the follow-up improvements to the young people, and he will develop the next-generation fighter.

In later generations, this fighter is the black ribbon in the eyes of military fans, and it was created by Mr. Song with a large number of technical personnel after the No. 10 machine was just finalized.

And now, the history is still strikingly similar, but the progress has been advanced by almost a decade.

Hearing Mr. Song say that the pre-research of the next generation of aircraft was carried out, Mhammad immediately showed great concern: "Is it? What are the technical specifications for your next-generation fighter? ”

Due to the fact that it was more than ten years ahead of schedule, the F22 fighter, which was the first in the world in the future, had not yet been tested at this time, everything was on paper, although the Americans put forward various technical requirements for the aircraft, but they needed to be carefully distinguished, after all, some of them were fooling the Soviet Union.

"Low detectability, excellent maneuverability, twin-engine heavy air supremacy." Mr. Song said.

The United States has declassified the F-117, and the whole world knows that the Americans have an advanced low-detectable aircraft, although it is an F-16-sized aircraft, but the radar reflection area is only the size of a helmet. Therefore, this low detectability is very critical. It is obvious that the distance at which the enemy's radar detects such an aircraft will be greatly reduced, the security of such an aircraft will be higher, and it will also mean that it can sneak up on the enemy's aircraft.

For your own next-generation fighters, it is obvious that you must also have low detectability! This required a redesign of the form and good maneuverability. In turn, it is necessary to significantly reduce the radar reflection area, which is almost a combination of contradictions, and more difficulties need to be overcome.

And maneuverability has always been the goal pursued by the Huaxia Air Force, and Huaxia's various aircraft, J-6. J-7 is known for its mobility, such as the improved J-7, which can catch up with the F-16 in close-range combat capabilities.

If you want to have excellent maneuverability, you need to have strong power, so this new fighter must be twin-engine.

Mhammad listened to what the other party said, and these were all good. Still, something was missing.

"The technical performance of the next generation of fighters was proposed by the United States, and in addition to these, there is another aspect that is very important." Mhammad said: "It's supersonic cruise!" ”

Supersonic cruise! Ordinary fighters, if they want to fly at supersonic speeds, they must turn on afterburner, and afterburner. To put it bluntly, it is to inject more fuel into the combustion chamber of an aircraft engine. Accelerating combustion, getting more thrust, this method is very simple, and the effect is obvious, however, a sequelae. It's just that the fuel consumption is too bad! Ordinary flights can fly for an hour of fuel, but once the afterburner is turned on, it can't even be used for ten minutes, and it has to be used up.

Therefore, although the fighter can fly up to Mach two in terms of performance indicators. However, an aircraft has only a very small amount of time in its entire life to fly at supersonic speeds, most of which are subsonic.

In later generations, the American F-22, in the process of fighting with other fighters, once it enters the supersonic cruise, it will declare the end of the air war, because other aircraft will not be able to keep up with the F-22 at all, and even if they catch up, it will not take a few minutes to run out of fuel.

Therefore, supersonic cruise seems to sound nothing, but in actual combat, this ability is more important, and supersonic cruise means that you can quickly reach the war zone in an interception mission and evacuate quickly after completing the mission.

Hearing Mahmad's words, Mr. Song had a trace of embarrassment on his face, he scratched his already bald head, and said: "We have discussed this indicator before, but we found that it is too difficult for us to achieve this indicator. ”

It is indeed too difficult, the United States in later generations can make the F22 can carry out supersonic cruise of Mach 1.6 without afterburner, which is achieved by relying on the American perverted technology and the general engine of alien technology, without a high thrust-to-weight ratio engine, this kind of fighter with conventional aerodynamic layout is impossible to carry out supersonic cruise.

For Huaxia, the engine is the biggest constraint, and the No. 10 machine can go through the complete process, thanks to the TF41 engine, which is a high-thrust engine that Huaxia can produce in large quantities. And with the replacement of the F110, the maneuverability immediately went to a new level, but unfortunately this engine is too expensive, and Pakistan's production capacity is limited, mainly for Pakistan's own air force, and it is impossible to equip Huaxia on a large scale.

Based on the existing technology, on the basis of TF41 to improve, increase and push, will not meet the needs of supersonic cruise, so this indicator is also unavoidable.

"If the engine is not powered enough, you have to find it back from the aerodynamic shape." "It's not very difficult to achieve the goal of supersonic cruise on the basis of existing technology," Mhammad said. ”

If the engine is not powerful, it can only be compensated for by pneumatics, and the Jian-10 with a canard layout is a product of this kind of thinking. None of the American planes have a canard layout, because their engines are good enough, and even Western Europe, without exception, has adopted a canard layout, because of the defects of the engines.

Mr. Song nodded, it is true, he also thinks so, so the development of the new fighter is still based on the existing canard layout scheme, after so many years of development, this layout has been thoroughly eaten by Chengfei, however, the canard layout, without a high-thrust engine, it is impossible to achieve supersonic cruise.

Thinking of this, Mr. Song suddenly woke up: "President Muhamad, are you talking about other pneumatic layouts?" ”

"Yes, as long as the drag is reduced, it will be easier to enter supersonic cruise." Mhammad said: "What do you think? ”

"You mean the variable sweep wing?" Mr. Song completely understood.

The variable sweep wing will allow the fighter to have excellent aerodynamic performance in various conditions, both close combat and fast sprint, and the Tomcat fighter now equipped by Pakistan is such an advanced fighter.

After the replacement of the F110 engine, the maneuverability of the Tomcat fighter has been greatly increased. Mhammad knew that when the U.S. Navy began to propose the NATF, or Navy's Advanced Tactical Fighter Program, Grumman immediately made a bid, codenamed Tomcat 21, which is actually a major improvement of the F-14. A large number of composite materials were used to reduce the radar reflection signal and weight, and the ground attack capability was additionally enhanced. Moreover, it is planned to install the F110-GE-129 high-bypass ratio turbofan engine to reduce fuel consumption and increase range. Grumman has calculated that such a fighter can have supersonic cruise capability.

As long as you understand all the technology of the F110 engine now produced in Pakistan, further increase the thrust, and improve it to the level of the F110-GE-129, you can make the Tomcat fighter have supersonic cruise capability! Not to mention the collapse of the Soviet Union in a few years, if you can get the Al-41 engine of the Soviets, it will have better supersonic cruise performance.

In addition to increasing the thrust of the engine. With the large-scale use of composite materials, the weight of the aircraft can be effectively reduced, and at the same time, all weapons are built-in, which can also reduce drag, so it is completely possible to develop a fighter that meets the characteristics of the fourth-generation aircraft on the basis of the Tomcat.

After listening to Mhammad's explanation. Mr. Song's eyes slowly radiated brilliance. He knew that, theoretically, with a variable sweep wing, the ability to cruise at supersonic speeds could be obtained more effectively!

In later generations, when Chengfei developed the J-20, it encountered the biggest problem. It is also because there is no qualified engine, which leads to a fighter with a beautiful appearance and is called a black ribbon by netizens, which has no supersonic cruise ability, and the engine it uses. It is still the AL-31 engine used on the Su-27, which is not powerful enough to cruise at supersonic speeds.

Mr. Song led the development personnel, has begun to explore diligently, the main scheme now, is still a duck layout, now, hearing Mhammad's words, that is to them to abandon the existing technology, the use of variable swept wing?

This change is so big that it is almost a reinvention, and the challenge is the biggest.

"In our country, we have begun the pre-research of modified tomcats." After all, although Pakistan has a very high scientific research capability after years of hard work, it is still difficult to develop a qualified fourth-generation aircraft, and it is still very difficult to develop a new fighter with Chinese technicians, which can not only reduce investment and reduce technological risks, but also make up for technical defects by both sides.

Therefore, after hearing that the other party was developing a fourth-generation aircraft, Mhammad immediately made a decision to jointly develop his own fourth-generation aircraft with Huaxia!

At present, the joint development of military aircraft has become a trend, after all, the development of advanced modern fighters has cost a huge amount of money, and all European countries have embarked on the road of development, such as the Tornado fighter, such as the Eurofighter of later generations, all of which are in this way of thinking.

Pakistan has carried out in-depth research on the aerodynamic shape and has sufficient stealth capabilities, but the research and thrust of the engine is not so simple, and the United States is now quite vigilant against Pakistan, and it is absolutely impossible to export more advanced engines to Pakistan.

Only by pulling in the personnel of Huaxia and doing it together can the progress be accelerated.

After Mhammad finished saying these words, the whole conference room fell silent, the second hand was ticking and turning, and Mr. Song's mind was thinking rapidly, this four-generation machine, related to the future of the motherland, was originally the most confidential project, but if it was self-developed, it took a long time, and the joint Pakistan would greatly speed up the progress, and the two sides had a lot of cooperation before. However, the proposal proposed by Pakistan is a variable sweep wing, which is an improved solution from the Tomcat, and will it push its own plan down?

Mhammad is also sitting quietly, and if the Chinese side does not agree, Pakistan will develop on its own. Now, with the continuous progress of aviation technology, large side strips, wing body fusion, these technologies are more and more developed, and variable swept wings, but no new models have been launched, therefore, there has always been a voice in the aviation industry, that is, variable swept wings are outdated!

Is it outdated? In later generations, the retirement of the American Tomcat represented the end of the classic variable-sweep wing fighter. However, that's because the United States has been invincible all over the world, and if the Soviet Union still exists, the United States will definitely not eliminate this advanced fighter, no matter how advanced the Hornet is, it does not have the long-range interception ability of the Tomcat fighter to carry six undead birds.

"We need to report to our superiors." Mr. Song finally spoke: "If we can jointly develop with Pakistan, we can greatly speed up our development, and I personally agree with it." However, with our current canard layout, or your variable sweep wing, we need to go through further arguments. (To be continued......)