windhund116
Senior Airman
- 360
- Jul 3, 2017
BTW... did you get this one?
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I knew that one was too easy. One-off prototype, I believe. Didn't Flettner develop the first production rotor helicopter?The Plymouth A-A-2004, a Flettner rotor aircraft using the Magnus effect to lift the plane , 1930.
Hamilton prop.
And probably their name also.I swear, you show a pic of a rivet and the man will tell you the plane, mark, where it was built and what the riveter had for lunch!