Hitman
Well-Known Member
No, we CAN'T cross the Atlantic in 3 hours. The problem isn't tech, the problem is that the tech is VERY EXPENSIVE. BAC/Aerospatiale made a LOSS on developing Concorde which is why no other manufacturer has ever built a SST. The market for such a plane isn't big enough to justify the massive expenditure (we're talking TRILLIONS of $ here) of developing one.The point is we can cross the Atlantic under 3 hours since late 1960ies and a commercial jet did that for 27 years. So tech is not the problem. The other problems are all conjunctural and solvable.
The problem is physics and this is NOT a conjectural or solvable problem. Regular subsonic aircraft run into compressibility around Mach 0.85; no amount of power increase will get them through this barrier, not in one piece anyway. You have to radically re-design the aircraft to go any faster, which means reducing the aircraft cross-section and re-designing the wings for high-speed rather than low-speed efficiency - both of which result in a smaller aircraft carrying a smaller payload. You also need exponentially more power which means engines with higher fuel consumption, which means you have to carry more fuel, which means a higher ratio of fuel (expense) to payload (income).
Concorde's design went past any compromises needed to become transsonic and went all-in on being supersonic (Mach 2.0). Only by being radically different in performance could they charge a premium to operate profitably, but it required massive subsidies from the UK and French Governments to be built in the first place. It is grounded permanently not for technical reasons, but because it isn't economic to make the modifications required to be certified by aviation authorities again. The days of supersonic commercial travel are over.