SR-72: US secret hypersonic jet to allegedly break sound barrier in 2025 | Believed to be a top-secret project of the US Air Force, the SR-72 is touted to reach over 4,000 mph (6,437 kph), making i...
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SR-72: US secret hypersonic jet to allegedly break sound barrier in 2025
https://interestingengineering.com/military/secret-us-hypersonic-jet-2025
Widely reported as the fastest plane ever developed, Lockheed Martin's SR-72 "Son of Blackbird" will test the claim sometime in 2025.
SR-72: US secret hypersonic jet to allegedly break sound barrier in 2025 | Believed to be a top-secret project of the US Air Force, the SR-72 is touted to reach over 4,000 mph (6,437 kph), making i...::undefined