Nord 1700 Norelic prototype helicopter developed by the French in the late 1940s.
https://s3-us-west-1.amazonaws.com/h...c_fullsize.jpg
https://s3-us-west-1.amazonaws.com/h...1_fullsize.jpg
https://s3-us-west-1.amazonaws.com/h...2_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...946#post210446
https://www.homemadetools.net/forum/...906#post190921
https://www.homemadetools.net/forum/...506#post212226
https://www.homemadetools.net/forum/...384#post204560
https://www.homemadetools.net/forum/...138#post168777
