NASA's X-59 Aircraft Flies Supersonic for First Time

"... display shows Mach 1.07, but the aircraft is actually at Mach 1.0. The difference comes from the system's calibration" (from the youtube description)

What causes something like that? I assume it's related to the speed of sound being dependent on measurements local to the aircraft? I guess I assumed off the shelf devices would already cover this?

Also, I was kinda hoping the first video they released for this would be a little more elaborate. Maybe I'm getting spoiled by the elaborate youtube industry springing up around covering space and tech. Still glad they're releasing news + video so frequently.

The X-59 isn't just a research aircraft. It's a blueprint for the future of supersonic commercial travel.

The Cockpit XVS display is powered by VxWorks and provides a cool HMI to the pilot that's configurable. https://ntrs.nasa.gov/api/citations/20220006188/downloads/XV...