7 个月
National Interest on MSNSR-91 Aurora: Does the Military Have a Super Secret Mach 5 Plane?Summary and Key Points: The SR-91 Aurora is a rumored hypersonic spy plane that has captivated aviation ... being a codename ...
5 个月on MSN
Selected current DARPA projects: XRQ-73 (stealth drone) Liberty Lifter (ekranoplan) Aurora X-plane (blended wing, VTOL, ...
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