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My dear Skyblazer discovered it before;
it was a drawing for high-speed autogiro of 1934,appeared in NASA Photo Archive,
and I could't also ID it or from which company or country,can anyone help ?.
http://stingraysrotorforum.activeboard.com/t36259355/other-uncategorized-rotorcraft-projects/?page=2
http://crgis.ndc.nasa.gov/historic/File:NACA_10082.jpg
it was a drawing for high-speed autogiro of 1934,appeared in NASA Photo Archive,
and I could't also ID it or from which company or country,can anyone help ?.
http://stingraysrotorforum.activeboard.com/t36259355/other-uncategorized-rotorcraft-projects/?page=2
http://crgis.ndc.nasa.gov/historic/File:NACA_10082.jpg
