Boom XB1 Schlieren photo

[warshipadmin]

https://edition.cnn.com/2025/03/03/trav ... index.html

Lovely. Now get your protractor out and tell me how fast they were going, or at least what mach number they were pulling. I honestly think supersonic air travel is a bit daft in a Net Zero world, but hey, I like planes.

And here's a better explanation of why they didn't hear booms

https://boomsupersonic.com/press-releas ... nic-flight

[kdahm]

The equation is:

Sin(Theta) = 1/M, where
Theta is the angle of the shock wave with the direction of travel (1/2 of the angle between the opposite shock waves)
M is the Mach number.

Estimating, I guess 75 degrees, so around 1.04 Mach.

[Pdf27]

Lovely. Now get your protractor out and tell me how fast they were going, or at least what mach number they were pulling.

Which shock? They're all at diverging angles, which is why you don't hear a shock on the ground.