配备涡扇-15发动机的‘完全体’歼-20，标志着中国第五代隐身战斗机真正迈入成熟阶段。此前，歼-20使用的是俄制AL-31或国产涡扇-10发动机，虽具备良好机动性和隐身性能，但在超音速巡航、推重比和矢量推力等方面存在短板。涡扇-15作为专为歼-20研制的大推力小涵道比涡扇发动机，推力预计超过18吨，具备全向矢量喷口，可实现不开加力状态下的超音速巡航，并大幅提升战机的机动性与战场生存能力。在航电系统、隐身设计已属世界先进水平的基础上，换装涡扇-15后，歼-20将全面释放其设计潜力：更强的超视距打击能力、更灵活的近距格斗性能，以及更高的作战半径和任务弹性。此外，发动机国产化也意味着中国空军摆脱了对外依赖，具备大规模列装和持续升级的能力。综合来看，‘完全体’歼-20不仅是中国空中力量的里程碑，更在全球五代机竞争中占据一席之地，成为足以与F-22等顶尖隐身战机抗衡的空中利器。
The ‘fully realized’ J-20 fighter equipped with the WS-15 engine marks the true maturity of China’s fifth-generation stealth fighter. Previously powered by Russian AL-31 or domestic WS-10 engines, the J-20 already demonstrated solid maneuverability and stealth capabilities—but lacked in supercruise performance, thrust-to-weight ratio, and thrust vectoring. The WS-15, a high-thrust, low-bypass turbofan specifically developed for the J-20, is estimated to deliver over 18 tons of thrust and features full-axis thrust-vectoring nozzles. This enables sustained supersonic cruise without afterburners and significantly enhances agility and survivability in combat.With world-class avionics and stealth design already in place, the integration of the WS-15 unlocks the J-20’s full potential: superior beyond-visual-range strike capability, enhanced dogfighting agility, extended combat radius, and greater mission flexibility. Moreover, domestic engine production eliminates foreign dependency, enabling large-scale deployment and continuous upgrades by the People’s Liberation Army Air Force. In sum, the ‘complete’ J-20 represents a milestone for China’s air power and firmly establishes itself among the world’s elite fifth-generation fighters—capable of rivaling top-tier stealth aircraft like the F-22.
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