Originally Posted by
megan
The engine at SR-71 cruise provides 17% of the thrust, the rest being 54% from the inlet and 29% from the ejector.
I've read this many times, and I think I understand the way the ramjet and conventional turbojet interact, and I still don't understand the way the terms are being used. 100% of the thrust is provided by the fuel that is being burned. None of the fuel is burned in the inlet. The inlet does interesting things to the airflow but it does not create thrust for any meaningful sense of "create". Or what am I missing?