5 ms·
Is it normal to talk about a "high Mach number" for a subsonic aircraft?
by cup-of-tea 8y ago
Is it normal to talk about a "high Mach number" for a subsonic aircraft?
- mseebach 8y agoYes. At high (sub sonic) speed and high altitude, you get close enough to the speed of sound that this starts to matter a lot. https://aviation.stackexchange.com/questions/35408/what-is-the-reason-for-changing-the-speed-reference-ias-or-mach-number-with-al https://aviation.stackexchange.com/questions/35408/what-is-t...
- sandworm101 8y agoMach is the better reference. If you quote standard speeds you get into the whole ground/indicated/actual speed/alt issue. Your numbers will always sound wrong to someone. Mach avoids the issue.