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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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[–] Mango@lemmy.world 14 points 10 months ago (2 children)

Surely that's not what's impressive about it? We can already do that right?

[–] FrankTheHealer@lemmy.world 3 points 10 months ago (1 children)

Hypersonic is 5x the speed of sound. SR71, F22, F35 none of them could go that fast. Or at least were designed to go that fast. Get an aircraft to reliably and consistently go 5x the speed of sound is a huge milestone.

[–] Mango@lemmy.world 2 points 10 months ago

X-43A

[–] maryjayjay@lemmy.world 3 points 10 months ago (3 children)

What vehicle?

[–] Agent641@lemmy.world 32 points 10 months ago (1 children)

Nepalese tourist bus on a winding mountain road.

[–] jdf038@mander.xyz 4 points 10 months ago

I experienced this in Taiwan to less of a degree so thanks for making me never want to go to Nepal because that gives me anxiety just imagining it 😆

[–] 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.

[–] Matty_r@programming.dev 2 points 10 months ago* (last edited 10 months ago)

The guy down the street with a Kawasaki Ninja probably thinks he can.