After series of tests the 11-EA helicopter was rebuilt keeping in mind more systematic study of controls. Wing was replaced frame structure supporting control rotors, borrowed temporarily from older models 1-EA and 3-EA. Main rotor blades were of all metal construction.
Systematically studied in 1940- 1941 by engineer-pilot D.I.Saveljev and designer V.P.Lapisov. Performance was good, aircraft was stable and responsive to controls. Tests stopped when the engine worn out.
|Modified April 10, 1997||Back to|