At the 2025 Changchun Air Show, the J-20, which was statically displayed for the first time, made the audience feel the beauty of China's aviation industry with its extremely “oppressive” aerodynamic appearance and exquisite craftsmanship. On September 20, Gong Feng, chief technical expert of the Aviation Industry Group and deputy general designer of the Chengdu Institute, also introduced the unique features of the J-20 in terms of aerodynamic design in an interview with the media. Gong Feng said that the integrated aerodynamic layout of the J-20 aircraft's “lift side duck tail layout” is the first of its kind in the world. “The J-20 is China's first self-developed fifth-generation stealth fighter. After more than 10 years of research and development, it has filled the gap in China's air stealth combat capability, broken through a series of core key technologies such as high-stealth, high-performance platforms and strong collaborative combat, leading technological development, innovative R&D systems, and building excellent teams. It is China's iconic cross-generational aviation equipment of the new era, and a powerful tool for defending the great rejuvenation of the Chinese nation. Gong Feng further explained that in terms of aerodynamic design, the J-20 effectively makes use of the favorable aerodynamic effects generated by the mutual coupling of “duck wing vortex, side stripe vortex, and aircraft wing vortex”. In terms of flight control, techniques to relax longitudinal and heading instability are used to solve the triaxial coupling effects caused by the tail. A comprehensive design of “high stealth, high lift, low resistance, and strong control” has been achieved. ”

At the 2025 Changchun Air Show, the J-20, which was statically displayed for the first time, made the audience feel the beauty of China's aviation industry with its extremely “oppressive” aerodynamic appearance and exquisite craftsmanship. On September 20, Gong Feng, chief technical expert of the Aviation Industry Group and deputy general designer of the Chengdu Institute, also introduced the unique features of the J-20 in terms of aerodynamic design in an interview with the media. Gong Feng said that the integrated aerodynamic layout of the J-20 aircraft's “lift side duck tail layout” is the first of its kind in the world. “The J-20 is China's first self-developed fifth-generation stealth fighter. After more than 10 years of research and development, it has filled the gap in China's air stealth combat capability, broken through a series of core key technologies such as high-stealth, high-performance platforms and strong collaborative combat, leading technological development, innovative R&D systems, and building excellent teams. It is China's iconic cross-generational aviation equipment of the new era, and a powerful tool for defending the great rejuvenation of the Chinese nation. Gong Feng further explained that in terms of aerodynamic design, the J-20 effectively makes use of the favorable aerodynamic effects generated by the mutual coupling of “duck wing vortex, side stripe vortex, and aircraft wing vortex”. In terms of flight control, techniques to relax longitudinal and heading instability are used to solve the triaxial coupling effects caused by the tail. A comprehensive design of “high stealth, high lift, low resistance, and strong control” has been achieved. ”