Figuring out where thust comes from gets to be real fun when looking at supersonic flight. It goes a long way from "Throw lots of hot air out the back and go the other way"
The concordes engines produced around 75% of their thrust at M2.2 in the diffusor section and only around 8% came from the actual engine. Another 29% thrust came from the nozzles, whereas the supersonic shocks at the intakes prosuced around 12% drag.
In a way the aircraft sucked its way forward.
OORW