This is slightly off topic, but why cant we start rebuilding Concorde?
Wouldn't it be much easier to rebuild using modern technology? And try to get Mach 3 over the Atlantic so London to New York could hopefully be under 3 hours including take off and landing.
For Concorde the entire supply chain is long gone. A clean sheet design based around currently available parts would be cheaper than trying to resurrect an old design.
As for speed, Mach 3 is really tough because of extreme airframe heating. Mach 2 is about the highest sustained speed an airplane can manage without using really exotic materials or active cooling.
You can either a) rebuild the Concord or b) use modern technology.
If you use modern technology, its not a Concord anymore.
And you can't magically go Mach 3 just because you say its 'modern'. What existing engine can do that? And even if you had an engine, a Concord will not do that anyway.
So really you are talking about developing a whole new plane. And that's gone cost 10-20 billion $ and including the engine like quite a bit more.
Wouldn't it be much easier to rebuild using modern technology? And try to get Mach 3 over the Atlantic so London to New York could hopefully be under 3 hours including take off and landing.