涡扇-15加持的歼-20B“完全体”首飞了，细数涡扇-15研发历程的每一个“关键时刻”
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| MP4 | N/A | 480P | Download |
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| MP4 | N/A | mp4a.40.2 | Download |
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| MP4 | N/A | mp4a.40.2 | Download |
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扇-15发动机已小批量投产，与歼-20B的适航飞行验证从去年开始，预计明年完成全部测试项目和针对性优化，2025年大规模列装到歼-20B上。
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