Originally Posted by
treadigraph
I never really considered the Trident 3 as anything other than three engined!
Ironically, "Little Willie" - as the RB162 boost engine on the T3 was affectionately(?) nicknamed by flight crew - probably comes as close as you can get to fitting the thread title: a jet engine (not a rocket), used routinely to assist take-off performance in a civilian airliner.
