Hans Joachim Pabst von Ohain (1911–1998) was a German physicist and airplane designer who developed one of the first operational turbojet engines. In August 1939, near Rostock, Germany, von Ohain's liquid-filled engine, the HeS-3B, was installed in the HE 178 airplane, and the first turbojet-powered aircraft took flight. Frank Whittle in England performed simultaneous and parallel work on jet airplanes. Von Ohain and Whittle are thus recognized as being the co-inventors of the jet engine.
Hans von Ohain (U.S. Centennial of Flight Commission)