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Sir Frank Whittle who was a Royal Air Force Pilot and Hans von Ohain who developed the turbo jet engine in the 1930s.istory of the Jet Engine. Jet engines can be dated back to the first century AD when the aeolipile was invented. Hans von Ohain's jet engine got patented in 1936 and flew in 1939.He later developed the axial flow engine, which is now the standard for gas turbine engines.
Hans von Ohain is considered the designer of the first operational turbojet engine. Frank Whittle was the first to register a patent for the turbojet engine in 1930. Hans von Ohain was granted a patent for his turbojet engine in 1936. However, Hans von Ohain's jet was the first to fly in 1939.Frank Whittle's jet first flew in in 1941.Source(s): http://inventors.about.com/library/inven...930 Applies for a patent for the jet engine concept - a reaction motor suitable for aircraft propulsion (granted April 1931). The idea is ignored by the Air Ministry. 1931-32 Test pilot on floatplanes and flying boats 1934 Flight Lieutenant Frank Whittle sent to Cambridge University as a mature student by the RAF.