2019年7月26日 星期五

Air Force speeds up B-21 for 'next-gen' stealth technology


The Air Force appears to have completed its Critical Design Review of the emerging B-21 bomber, inspiring confidence and optimism that a new-generation of stealth will be ready for war by the mid-2020s, and beyond.

via FOX News https://ift.tt/2Y9MfWz

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