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Trump targets speed-of-sound ban for airliners
(www.eenews.net)
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this post was submitted on 09 Jun 2025
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My main questions center on how much extra fuel is required to provide all that additional energy? Idk enough about fluid mechanics to answer this on my own: how much more energy does it take to accelerate from mach 1.1 to mach 1.2 vs mach 0.9 to mach 1.1?
it's not acceleration, it's air friction vs plane geometry, supersonic airflow has different optimal characteristics both for engines and flight surfaces/wings (naive kinetic energy is just differences of speed squared though).
from new scientist
seems like they get shit of both worlds tbh with fuel economy (not zoomy enough to just cross distance fast with godawful fuel consumption/not optimized enough for flight at those speeds via engine regimes/geometry (that part might be fixable, but depends on how long it spends on subsonic climb/descend part of journey)
oh that makes so much sense thank you!