A few days ago, CCTV-7 "Eyes of Military Fans" broadcast the latest masterpiece "Li Ling and His "Sharp Knife Unit"," which comprehensively showed that a certain brigade of the Air Force Aviation Corps, as a sharp knife unit, was on the road of sharpening the "sharp knife" and flying toward the battle. The shooting of the J-20 in this program is very atmospheric, and the angle is unprecedented, which makes netizens shout and shock.
The J-20 is a fifth-generation twin-engine heavy stealth fighter independently developed by the mainland, which applies a large number of fantastic world-class aviation technology, has good stealth performance, excellent maneuverability, long range, good stability, strong fighting and other characteristics, has a high situational awareness ability, and has the advantages of discovering the first enemy, launching the first enemy, destroying the enemy first, and disengaging the enemy first. Breaking the monopoly position of the United States in the field of stealth fighters.
However, netizens also found that the size of the J-20 fighter is very large, is the largest fuselage size of the fifth generation stealth fighter, J-20 fuselage length of more than 21.3 meters (excluding airspeed tubes), and the so-called flying pencil of the domestic J-8B fighter fuselage length of 21.52 meters. The J-20 is also nearly 2 meters longer than the American F-22A, and even 5 meters longer than the F-35.
The J-20 stealth fighter adopts a large aspect ratio of the airframe design, using a large swept angle, a small aspect ratio, relatively small thickness and small area of the wing, with its unique lift body side strip canard layout, a good balance of supersonic maneuverability and stealth performance.
Compared with its American F-22A and F-35 fighters, the J-20 is indeed unquestionably large in size. For example, the F-22A has a length of nearly 19 meters and a wingspan of nearly 14 meters. China's J-20 has a body length of more than 21 meters and a wingspan of nearly 15 meters.
In general, there are many advantages to the smaller airframe of a fighter, for example, the F-22A can have anti-weather maneuverability, which has a lot to do with its compact airframe design. However, the success of Xiao He and Xiao He, F-22A also brought a lot of trouble due to the small size of the fuselage. F-22A fighter due to small size, the structure is very compact, resulting in the internal space of the fuselage is very tight, in the case of ensuring a large built-in bomb bay size, leaving less space for fuel, so the F-22A occupies the world has always had the problem of short range, is a famous short-legged fighter, even the F-35 stealth fighter range is more than the F-22A.
However, the body of the J-20 is not unacceptably large. For a long time, people have believed that the body of the J-20 stealth fighter is relatively large and long. This is also a major reason why the outside world believes that the J-20 is relatively bulky and has poor maneuverability. However, from the top view of the previous J-20 exposure, the body size of the J-20 is very similar to that of the J-16 heavy fighter. The captain and wingspan of the J-20 is even smaller than that of the J-16, and the outside world believes that the J-20 looks particularly large, mainly because the body of the J-20 uses a length-to-detail ratio design and brings a visual error.
This is the accurate measurement of the J-20 fighter by netizens: the length is 20.3 meters, the height is 4.8 meters, the bottom bomb bay size is 4.8 meters, and the side bomb bay size is 3.4 meters.
Due to the huge fuselage, the bomb bay design of the J-20 has many latecomer advantages over the American F-22, and the overall performance exceeds that of the American F-22. The size of the main bomb bay of the J-20 is slightly larger than that of the F-22, and some netizens have analyzed that the length is between 4.5 and 4.8 meters, and the depth is 0.8 meters, which can normally mount 6 Thunderbolt-15 medium-range air-to-air missiles with a range of more than 150 kilometers, and can load larger air-to-air missiles or air-to-ground ammunition.
Due to the cramped size of the fuselage, the F-22 has a small size of the main ammunition compartment, which is more contradictory when arranging the mounting of missiles, and has wronged the AIM-120C-7 medium-range air bomb in the main ammunition compartment. The AIM-120C-7 is a miniaturized modification of the famous Amlam-120 medium-range missile, which was adapted to the F-22 magazine, reducing the missile strike range from 100 km to less than 80 km.
At present, the outside world is biased to think that the J-20 airframe is larger, so the maneuverability is naturally inferior to that of the F-22A. This is actually a misunderstanding, the J-20's unique "canard wing + side strip + front and rear flaps + full-motion tail" aerodynamic design, making the J-20 more flexible in air combat, better mobility, faster flight speed.
The large body of the J-20 is mainly reflected in the length of the fuselage, and the reason for maintaining a long body length is mainly to improve the high-speed maneuverability and supersonic cruise capability of the J-20. Stealth fighters need a larger length-to-thin ratio to obtain better supersonic cruise capabilities, F-22A has a powerful F-119-PW-10 engine, so this law can be basically ignored, and at this stage China obviously does not have a more suitable engine, so it can only be said to start from the length of the airframe.
Although many of the data of the J-20 are still unclear, the design of the J-20 itself is very focused on high-speed performance, combined with official media reports, it is speculated that the speed may not be less than Mach 2.5, which is likely to be the fastest fifth-generation fighter. During last year's Founding Day, the People's Daily micro-video "Soldier One Minute" rarely disclosed a data, the J-20 can fight and cruise 52 kilometers in 1 minute, which is equivalent to the maximum flight speed of the J-20 up to Mach 2.45, confirming the J-20 pilot once said: "Once the J-20 enters supersonic speed, it is our world." This also proves from one side that the J-20 has superior high-speed maneuverability.
The larger body also gives the J-20 other performance advantages that are rare. For example, the J-20 can maintain a large combat radius even if it has a large built-in bomb bay. It is expected that the combat radius of the J-20 is about 1500 to 2000 kilometers, which is obviously more than the 1000 kilometers of the F-22A, and when the super cruise is started, the combat radius of the F-22A even falls to less than 900 kilometers.
Many people do not know that the F-22 is a famous short-legged fighter with a very low range. The F-22 relied heavily on external auxiliary fuel tanks to increase its range. Many people think that the F-22's huge shape and volume, the fuel in the aircraft must be a lot, the range and combat radius must be very large. In fact, this is a misunderstanding.
The F-22 is a "short-legged" fighter, and when the F-22 is not mounted, the combat radius of subsonic cruise is about 1,000 kilometers, and the supersonic cruise operation is pitifully small, only about 720 kilometers. Such estimates are that the F-22's in-flight fuel subsonic cruising range is about 2,500 kilometers. Its combat radius and range are not even as good as those of an F15 fighter similar in size.
The main reason for the low endurance is that the F-22 was developed during the Cold War, and was originally designed to compete with the Soviet Air Force in Western Europe for air supremacy, and there was no need to maintain a large range. Coupled with the strengthening of the structure for supersonic cruise and supermanual maneuvering, the fuel ratio in the aircraft is low.
In fact, the F-22A fighter just looks handsome, and the actual experience is not good enough. The last time I went to the 4s shop to test drive the F-22A, I felt that it was not very soundproof, the noise was very large, the space was relatively cramped, the panoramic sunroof was useless, the sound effect was also general, and the production was discontinued and the price was raised. Not accustomed to him, he consulted with his wife, resolutely gave up, and finally went to mention a BYD Song, which felt really different.