I got stuck in a wiki loop hunting down Turbofan and Turbojets and I found this. The AM-62 snark. The same Turbojet in the DC-8, 727, 707 and B52 (among others) propelled this celestially guided rocket assisted 3.8 megaton nuclear cruise missle 5500 nautical miles at 55,000 feet. This sucker was 62 feet long with a 42 foot wingspan! To give a sense of scale...this is about as long with about the same wingspan
I didn't work very well or make much sense after ICBM's but still. Dayum!