My late-lamented uncle had business for a while with BAC and brought me a stack of marketing and engineering sales literature about the VC-10 and BAC 1-11, which as a 9 yr old I absorbed avidly. Both sets majored on the adoption of QUIET 'by-pass' jet engines, the Conway and Spey respectively! The bumpf really went to town on this aspect. Eee! Nimbys t'day don't know they're born!