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Oct 14, 2022 at 21:29 comment added nasch @JanHudec apparently the best is around Mach 1.5: en.wikipedia.org/wiki/Supercruise#Military_use
Oct 14, 2022 at 20:26 comment added Jan Hudec It is important to note though that the Concorde cruised a lot faster than any fighter jet (only SR-71 cruised faster but that is not a fighter). Most fighter jets don't cruise supersonic at all (supersonic flight requires continuous afterburner, which uses too much fuel for long flight) and the best is around Mach 1.2. Compared to Concorde around Mach 2.
Oct 14, 2022 at 16:32 history edited user3067860 CC BY-SA 4.0
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Oct 14, 2022 at 15:26 history edited user3067860 CC BY-SA 4.0
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Oct 14, 2022 at 14:51 comment added Bianfable On supersonic flights Concorde can only stay in the air for 3½ to 4 hours. It'll burn about 80 t of fuel in that time, so refueling will take quite a while. 25 h airborne for 33 h total time seem reasonable to me.
Oct 14, 2022 at 14:44 history answered user3067860 CC BY-SA 4.0