Recently, China’s aviation industry announced a major breakthrough: the domestically developed fifth-generation stealth fighter, the J-20, has successfully been equipped with the indigenously produced WS-15 turbofan engine. This upgrade marks the realization of the J-20’s ‘complete’ or ‘fully capable’ configuration. Military experts note that this ‘engine swap’ not only resolves the long-standing reliance on Russian AL-31 series engines but also enables the J-20 to achieve its full design performance in supercruise capability, maneuverability, and stealth.The WS-15 engine features high thrust, an excellent thrust-to-weight ratio, and advanced thrust-vectoring technology, significantly enhancing the J-20’s air superiority capabilities. Previously, despite its advanced stealth shaping and avionics suite, the J-20 was limited in sustained supersonic cruise and high-speed agility due to engine constraints. With the WS-15 now mature and entering service, the J-20 has truly become a globally competitive fifth-generation fighter.Analysts believe that the completion of the J-20’s full configuration not only strengthens the People’s Liberation Army Air Force’s air dominance but also demonstrates China’s self-reliance in high-end aerospace propulsion—a milestone with profound implications for national defense modernization and advanced manufacturing.
近日，中国航空工业传来重大喜讯：国产第五代隐形战斗机歼-20已成功换装国产涡扇-15（WS-15）发动机，标志着该机型正式实现‘完全体’状态。多位军事专家指出，此次‘换心’不仅解决了长期依赖俄制AL-31系列发动机的短板，更使歼-20在超音速巡航、机动性能和隐身能力等方面达到设计初衷的全部作战指标。涡扇-15发动机具备大推力、高推重比和先进矢量控制技术，可显著提升歼-20的空中优势作战能力。此前，受限于发动机性能，歼-20虽具备优异的隐身外形与航电系统，但在高速机动和持续超巡方面存在局限。如今，随着WS-15的成熟列装，歼-20真正成为一款具备全球竞争力的第五代战斗机。分析人士认为，歼-20‘完全体’的形成，不仅强化了解放军空军的制空能力，也彰显了中国在高端航空发动机领域的自主突破，对推动国防现代化和高端制造业发展具有深远意义。
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