Hans Joachim Pabst von Ohain (December 14 1911 - March 13 1998) was one of the inventors of jet propulsion. Ohain designed the first self-contained jet engine to run, and he was the first to power an all-jet aircraft. Although none of his designs entered production, his contributions to the development of the jet engine in Germany are invaluable. After the war, he met his British counterpart, Frank Whittle, and the two became good friends.