The Bensen B-9 Little Zipster was a small helicopter developed by Igor Bensen in the United States in the 1950s and marketed for home building. Similar in general configuration to Bensen's previous rotor kite and autogyro designs it consisted of an open aluminum framework but substituted the autorotating main rotor for a coaxial counter-rotating system of two two-bladed rotors.
Made by Bensen AircraftBensen Aircraft for homebuilding.