Samuel Kurtz Hoffman
Samuel Kurtz Hoffman was an American engineer who specialised in rocket propulsion.
He served as chief engineer at engine manufacturing firm Lycoming Engines and later became professor of aerospace engineering at Pennsylvania State University, his alma mater.
While leading a team at North American Aviation between 1949 and 1970 he developed the F-1 engines that would power the Saturn V rocket, and later worked on the Space Shuttle Main Engine.