“in 1965, which is the last time real supersonic aircraft were even attempted.”
If you ignore the F-22 and its super-cruise capability (its engines are a big part of its super-cruise capability).
I suspect you are referring to commercial aircraft. . .but since then, R&D has been on-going. . .lesson’s learned from military R&D can be data-points the commercial world can use.
No, that’s a good data point.
Note that the TFE-1042 was and is a military engine; no one has really adapted it to civil use, although it’s been proposed. F119 is a very good example of a supersonic fan jet and further makes my case.
Would note that this design is mid-80s, and Lockheed had no idea they were going to win the fighter, it came as a shock. But the engine/airframe match was really what USAF was looking for. Since then, they have not pushed into the civil world with the idea. At least not publicly. Guess they’re happy the AF is happy.
A civil supersonic jet need not be so agile, nor stealthy. And a civil version of F119 would be decades out of date now, but the basics would be the same in any upgrade/variant. Everyone knows how to do it these days.
So I agree, it’s an engine AND airframe from which “lessons learned” (eeek a Systems Engineering phrase!) can be used to create a viable high thrust, medium pax supersonic jet.
Until of course that Musk fellow finds his magical 400 Wh/kg Li+ battery and mates it to a high Tc electric motor...
The JP-8+100 fuel additive is critical and requires special handling when it comes to filtering water out of fuel. It works well in fighters since you can offload their entire fuel quantity into a truck and then into another fighter but airliner quantities would pose problems for the storage tanks and pipelines to the pits.