Andy wrote:[
The 747-100, the first of the "Jumbo's" used a Pratt & Whitney engine, then they moved on to a Rolls Royce from 747-200 I believe. I'm not a total anorak on aviation (civil or military) but I recall the RR engine used for the 747 range was something like a "type 22" or something, and didn't/doesn't actually have a model "name" like many of their other engines.