this post was submitted on 03 Jan 2024
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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... (interestingengineering.com)
submitted 10 months ago by L4s@lemmy.world to c/technology@lemmy.world
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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

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[–] Person264@lemmings.world 3 points 10 months ago

They'll test it on the ground and flying slowly first before going fast to make sure it's safe enough.