The Focke-Achgelis Fa 225 was an experimental rotary wing assault glider developed by Nazi Germany during WWII.
https://s3-us-west-1.amazonaws.com/h...gyroglider.jpg
Previously:
https://www.homemadetools.net/forum/...206#post149917
https://www.homemadetools.net/forum/...160#post134559
https://www.homemadetools.net/forum/...217#post134781
https://www.homemadetools.net/forum/...399#post122142