I'm not given to heroing people, but.............
Eric Melrose 'Winkle' Brown
https://en.wikipedia.org/wiki/Eric_Brown_(pilot)
A remarkable, never to be repeated career, spanning biplanes to jets.
Sir Frank Whittle
https://en.wikipedia.org/wiki/Frank_WhittleArthur Rowledge
https://en.wikipedia.org/wiki/Arthur_Rowledge#You just know that people like this will have such amazing stories to tell.
My passion has always been engineering and especially the period up to maybe 1950. There will be many other ground breaking engineers from that era......Barnes Wallace, Geoffrey De Havilland also spring to mind.