美国媒体披露，美国很早就试飞了无垂尾隐身飞机，NGAD。性能参数没有公开。唯一的问题是造价太高，预计每架三亿美元。被暂停

来源: thore 于 2025-01-09 04:16:17 [旧帖] [给我悄悄话] 本文已被阅读：次

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