The Chinese PLA Air Force spokesman Shen Jinke said at the 14th China Air Show Press Conference on September 27th that "the Fifth-generation fighter J-20 has spread throughout the southeast and northwest."For the first time, people use the "Fifth Generation Fighter" to express the J-20, which has aroused public opinion.

China CCTV's military explained that the fighter's agency is a category of one or several aircraft clans that have similar performance, similar technologies, and using the same combat method.When the performance and technology of the new model have a comprehensive and significant improvement, they will be called "new generation".Method.

Among them, the "traditional four -generation division" only covers the ultrasonic fighter, and listed the double sound -speed fighter aircraft of the early 1950s as the first generation.In the second generation, the third generation of fighter jets with high maneuverability as the main characteristics of high mobility was listed as the third generation in the mid -1970s.

The "Division of the Five-generation Russian" is generally the same as above, but the second generation of the second generation of the "four generations of traditional four generations" is listed as the first generation (MiG-23, F-111)Three generations; the same division of other divisions, so there is an extra generation.This division method has been adopted by the Soviet Union and used to Russia.

The "Five -generation division of the United States" lists jet fighters as the first generation, and the Gaoya sound speed and rear -wing fighter aircraft are listed as the second generation.Three generations, and the fourth and fifth generations are divided by comprehensive performance improvement.

Zhang Jien, a permanent director of the China Aviation Society and a consultant of the Science and Technology Commission of China Aviation Industry Corporation Corporation, believes that in order to connect with international standards, China can also identify with the development of fighter jets.Based on the main line of jet fighter, the first three generations are mainly speed -based and latter two generations based on comprehensive performance. It is recommended that it can be called the "new five generation division method".

Under the new five generations division method, the first generation of fighters included early jet type and Asian Speed and Gao Sound Speed Fighter (MA0.6 ~ 0.98) in the 1930s and 1940s.Ge-15, F-86 and China J-5.

The second-generation fighter is MA1-level, low ultrasonic fighter (MA1.3 ~ 1.5), which began in service in the early 1950s. The representative models include MiG-19, F-100 and China.-6.

The third-generation fighter is the MA2.0-level fighter that began serving in the late 1960s. The representative models include MiG-21, F-4, F-104 and China J-7, and China J-7, and ChinaJ-8.

The fourth-generation fighter was serving in service in the mid-1970s, with high mobility as the main characteristics and significant improvement of comprehensive performance. Representative models include MiG-29, Su-27, F.-14, F-15, F-16 and China J-10, J-11.

The fifth-generation fighter aircraft includes a new generation of fighter jets that have been serving in the 21st century. Representative models include F-22, F-35, Su-57 and China J-20.

Zhang Jien also believes that the replacement of fighters will help reflect the technical and tactical characteristics of aviation equipment, compare and learn from the laws of equipment development, and facilitate the development of the public to understand and cognitive fighter development and progress.

However, he also pointed out that the fighter aircraft is only a classification, does not represent combat capabilities, and it is not a technical standard.Equipment level.