J-20 specifications and engines and AESA
五代机的几大性能: 4S
4s，即：Stealth（隐形）；Super Sonic Cruise（超音速巡航能力）；Super Maneuverability（超机动能力）；Superior Avionics for Battle Awareness and Effectiveness（超级信息优势）
歼20是成飞研发的，是重型战斗机，高性能，远航程，但是造价高，不易大量建造，类似于美国的F-22；
歼31是沈飞研发的，是轻型战斗机，性能不错，航程适中，性价比高，可以批量装备，类似于美国的F35。这是为了高低搭配。
歼击机，即用于在空中消灭敌机和其他飞航式空袭兵器的军用飞机，也称战斗机。第二次世界大战时期曾广泛称为驱逐机。
歼击机的主要任务是与敌方歼击机进行空战，夺取空中优势(制空权)。其次是拦截敌方轰炸机、强击机和巡航导弹，还可携带一定数量的对地攻击武器，执行对地攻击任务。歼击机包括要地防空用的截击机，但自20世纪60年代以后，由于雷达、电子设备和武器系统的完善，专用截击战斗机的任务已由制空战斗机完成，截击机不再发展。歼击机是航空兵空中作战的主要机种，也可用于执行对地攻击任务。
China’s stealth fighter jet is going into mass production after a key upgrade A modified version of China’s first stealth fighter jet, the J-20, has formally entered mass production, with upgrades earning it a place as a fifth-generation fighter jet, according to a military source close to the project. The moment was marked at a ceremonial unveiling of the modified J-20B stealth fighter jet on Wednesday attended by many senior military leaders including Central Military Commission (CMC) vice-chairman General Zhang Youxia, the source said. https://www.businessinsider.com/china-j20-stealth-fighter-jet-into-mass-production-after-upgrade-2020-7?r=US&IR=T “Mass production of the J-20B started on Wednesday. It has finally become a complete stealth… Read more »
J-20 + J-16
http://www.toutiao.com/a6448736203117166862/