Supersonic with efficient turbofans?

Posted by AlrightyDave@reddit | aviation | View on Reddit | 3 comments

I’ve taken a keen interest in supersonic flight recently but my specific interest has converged on figuring out how specifically Boom Supersonic plans to use conventional ish turbofan jet engines without afterburners, no turbo ramjet or turbojet with afterburner setup as either Concorde did or I’ve attempted in my own simulations

(I built a wide body mach 3 turbo ramjet aircraft which is awesome and better than concorde even for going faster with the same efficiency), but I would love to see how Boom plans to maintain almost the same speed as concorde while theoretically getting considerably better efficiency given the normal “medium bypass” turbofans

In my testing my stated solution was the only one that worked, as attempting turbofans even with an initial kick from afterburners to break the sound barrier just resulted in falling back through the sound barrier once you switch back to turbofan

Sound barrier is no joke to break, but with turbofans it seems like an impenetrable wall, not just a hurdle to add more powerful turbofans or air intakes

The problem is turbofans lose thrust enormously quickly when you start climbing to a normal cruising altitude as well, which isn’t the case with turbojets or turbo ramjets

my question is just how are they actually making what they state work??

side note: i’ll link my other aircraft here that i’m proud of working soundly, but it’s in a whole other flight regime