Textron Inc.
CONTRA-ROTATING ROTORS WITH DISSIMILAR NUMBERS OF BLADES

Abstract:

A rotor system has a mast axis, a first rotor rotatable about the mast axis in a first direction and the first rotor has a first number of first rotor blades, and a second rotor rotatable about the mast axis in a second direction and the second rotor has a second number of second rotor blades that is different than the first number. The second direction is opposite the first direction.