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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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[–] jettrscga@lemmy.world 19 points 10 months ago* (last edited 10 months ago) (2 children)

I feel like I'm taking crazy pills.

The speed of sound is 343 m/s, 767 mph. This description is Mach 5, 5x the sound barrier.

An F-22 can go 1500 mph.

Apparently the first airplane to break the sound barrier was Bell X-1 in 1947.

[–] SwampYankee@mander.xyz 7 points 10 months ago

I think the intention is to highlight it as a milestone in the development of this aircraft. If you read the article, sounds like it hasn't even been on a test flight yet.

[–] Balex@lemmy.world 5 points 10 months ago

Looks like the plan is for it to eventually reach speeds over 4000 mph.