The first jet engines: all the air goes through the core.
J57J57TurbojetsPratt & Whitney J57Early jet engine that powered bombers, fighters and the first jet airliners.Pratt & Whitney · United States→J58J58TurbojetsPratt & Whitney J58The engine of the SR-71 Blackbird, working partly as a ramjet at very high speed.Pratt & Whitney · United States→