The Lockheed Martin SR-72, commonly referred to as "Son of Blackbird", is an American hypersonic concept intended for intelligence, surveillance, and reconnaissance (ISR). It was proposed privately in 2013 by Lockheed Martin as a successor to the retired Lockheed SR-71 Blackbird.
The Lockheed Martin SR-72, commonly referred to as "Son of Blackbird", is an American hypersonic concept intended for intelligence, surveillance, and reconnaissance (ISR). It was proposed privately in 2013 by Lockheed Martin as a successor to the retired Lockheed SR-71 Blackbird.
Source: Wikipedia "Lockheed Martin SR-72" · CC BY-SA 4.0
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