1909 First Designs by Igor Ivanovitch Sikorsky

Both designs, the S1 and S2, were unsuccessful. The S1 was too heavy with respect to the power output of its engines, had 2 coaxial rotors, and could not lift its own weight.



The S2 was equiped with a 3 bladed rotor and was able to lift. However, it could not carry the weight of the pilot and it suffered from severe vibrations. Sikorsky stopped his efforts and turned his attention to fix wing aircrafts. It took until the 1930s before Sikorsky returned to design helicopters again.

Top of page

Page back

Index page