Check out this short entry at RetroMechanix.com on the Granville Racing Gyroplane project of 1935:
The study appears to be a conversion of the Gee Bee R-1/R-2 Senior Sportster hybrid into a two-place autogyro. The drawing is from a clipping found in a NACA file at National Archives II in College Park, MD and apparently originates from the February 1935 issue of Aero Digest. Unfortunately, the clipping did not include a caption or article giving further details on the type. If anyone has the full article or additional information on this study it would be much appreciated.
-Jared
By: Arabella-Cox - 7th July 2011 at 20:29
If I remember correctly it was wheeled out for its maiden flight on the 1st April 1935.
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July 6, 2011 at 8:37 am