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