>>2032058
>Time is money not just for the passengers but the airlines. This is why turboprops for instance, which are significantly more fuel efficient than jetliners have mostly dissapeared in favor of jets.
Modern turbofans can get more fuel efficient than old turboprops. That still isn't the reason why many airlines go for regional jets for their feeder traffic, that is because they can keep aircraft types in the fleet at minimum as regional jets can usually fly bit longer routes as well.

Boom Overture is doomed. No credible aircraft engine manufacturer is willing to work with them. Rolls-Royce made mistake in doing feasibility studies for them, that gave Boom some credibility they didn't deserve. Only manufacturer willing to work with them is making turbines for target drones, decoys and cruise missiles. Cheap, simple and tiny jet engines that aren't meant to used again. Its going to be a sight to see once they start making stuff that is order of magnitude bigger and more complex as I assume Boom wants to re-use their engines.

>>2032157
Odds are that supersonic aircraft is going to require more inspections and maintenance to stay safe. Airlines have always gone for low costs.

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Boom achieves first independently developed supersonic flight with their XB-1