A kid-friendly version of this page isn’t written yet — you’re seeing the regular version below. Back to the gallery to find an aircraft with a Kids version.
The Focke-Achgelis Fa 330 Bachstelze is a type of rotary-wing kite, known as a rotor kite. They were towed behind German Type IXD2 U-boats during World War II to allow a lookout to see further. About 200 were built by Weser Flugzeugbau.