The inventors invented the jet. It took its first flight on august 27 1939.It was named the german hieniel he-178.It was invented just after world war 2. Germany pilots used jet propulsion for missels. Hans von ohain was granted a pantent for his engine in 1936 .
Bellis, Mary. "The History of the Jet Engine - Sir Frank Whittle - Hans Von Ohain." Inventors . New York times Company, 2011. Web. 15 Dec. 2011. <http://inventors.about.com/library/inventors/bljetengine.htm>.