Not being an expert on supersonic turbofans, I went to the obvious first information source and it was surprisingly illustrative. https://en.m.wikipedia.org/wik

Not being an expert on supersonic turbofans, I went to the obvious first information source and it was surprisingly illustrative. https://en.m.wikipedia.org/wiki/Turbofan https://en.m.wikipedia.org/wiki/Turbofan From a little further reading it seems it seems that supersonic turbofans are actually just the apex of the continued sophisticated work being done on jet engines which has allowed them to push the intake fans of low bypass turbofans up to supersonic airflow speeds.