Boom has orders for 76 of its future supersonic passenger jets
I wish Boom the best of luck in getting a working product, but they need to fix their marketing.  There is absolutely no way that plane tickets will cost 75% less than Concorde tickets, unless something drastic changes from the norm of air travel- either severe baggage restrictions, extremely cramped seating, or different fuel.Even with all the greatest computer model, one thing remains the same: it takes a massive amount of thrust to maintain supersonic flight.  EVERY airplane that is/was capable of supersonic cruise (SR-71, XB-70, F-22, Concorde) have/had comically oversized engines compared to what design rules of thumb would suggest.  New technologies enable slightly more efficient airframes and slightly more efficient engines, we are talking about a few percent overall.  So, I can see tickets being 20% less than they were in the Concorde's day.Part of the reason I think they have mis-calculated a number is that they might be calculating a flight cost that includes fuel only and doesn't include other things an airline has to price into a ticket- namely insurance and maintenance.  Insurance for the first supersonic passenger plane since the Concorde is guaranteed to be higher than a 767.  Maintenance is going to be crazy as well- flying at Mach 2.2 places different stresses on an airplane, and they break a lot.  All of the current supercruising airplanes are/were maintenance nightmares.  Don't think that technology can "magic away" all the maintenance issues that come up with sustained stress on your engines, skin friction, and cooling issues.Unless something else changes, there is no way you'll be able to buy a NY to London plane ticket for 75% less than a Concorde.  How might they get there?  Packing people in like sardines, or replacing normal baggage space with extra seats, would both get more paying seats on board, but would be a big setback from what business class passengers expect.  Or maybe there is some magic fuel out there that is lighter than Jet-A/B and delivers more thrust and is safe enough for use in a passenger jet.  The existence of magic fuel is unlikely, so be prepared for one of two things- 1. your tickets cost more than expected, or 2. you are packed in like a sardine.Again, I'm glad that someone is trying to make a supersonic passenger jet, but hyperbolic marketing ultimately hurts you in the long run when it becomes obvious that you can't live up to expectations.