The Horten brothers conducted flying-wing experiments
prewar, building a series of tailless high-performance gliders.
The Horten Ho V and Ho VI were both powered aircraft,
leading to the turbojet-powered
Ho-IX / Go 229
Ho IX flown in the summer
of 1944. Before being destroyed in a landing accident after
only a few hours flight, it had been flown at a speed of 800km/h. This was developed by Gothaer Waggonfabrik as the Gotha Go 229 V3 single-seat fighter,
but the Gothaer works were captured by advancing U.S.
forces before this prototype was completed.