Henry Selby Hele-Shaw FRS[1] (1854–1941) was an English mechanical and automobile engineer. He was the inventor of the variable-pitch propeller, which contributed to British success in the Battle of Britain in 1940,[citation needed] and he experimented with flows through thin cells. Flows through such configurations are named in his honour (Hele-Shaw flows).[2] He was also a co-founder of Victaulic.[3]