The Ente (German: duck) was the world’s first rocket-powered full-size aircraft. It was designed by Alexander Lippisch as a sailplane and first flown under power on June 11, 1928, piloted by Fritz Stamer.During the late 1920s, Fritz von Opel had undertaken a variety of publicity stunts involving rocket-powered vehicles for the Opel company. He was assisted in these endeavours by pyrotechnics manufacturer Friedrich Sander and rocketry advocate Max Valier.