Boom “requires just a 30% efficiency improvement over Concorde's 50 year-old airframe and engines,” which were a masterpiece of engineering
this is an excellent point. There’s no way you can make a roomy supersonic airliner, or make it quiet
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we live under the Heathrow flight path. Concorde used to go over 2/3x a week. Boy was I glad when it stopped flying
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