When I put real-world values on the Concorde (~90 tons fuel, ~11 tons payload), the aircraft very much struggled to climb and just stalls and descends, even with afterburners.
Concorde weight physics
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Kipav -
December 25, 2025 at 8:29 AM -
Thread is Resolved
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Keep in mind that Concorde had its own version of a step climb (Cruise Climb) Also, I've noticed an issue with the A350 that might be relevant; you'll need to keep subtracting fuel in at least 10T intervals, or the figures will be way off on long flights that require step climbs. A350 burns 10 to 15 tonnes on a heavy climb, not sure what the figure will be for Concorde, but it definitely drank like an alcoholic during take off and climb
Less fuel mass, better climb performance.