IMHO
IMHO, the improvements mentioned by Sikorsky in 1980 to its
original ABC represent the future of the helicopter. Newer additional improvements to the rotor must, and will, come about.
The only difference between big old Sikorsky and little old me is in regard to which configuration will be the most efficient for the various missions that these new craft must serve. I believe that the Coaxial, the Intermeshing, the Interleaving, plus the Side-by-side, are ALL potential candidates.
IMHO, the Intermeshing configuration will be the best one for small agile craft and the Interleaving configuration will be the best one for large transportation craft. However, this is just one person's assessment.
Before the industry, or one of its members, jumps on a specific horse and gallops off into the future, I believe that a serious evaluation of all four configurations should be conducted.
Then let the real battle begin;
ABC-rotors ~ vs. ~ Tilt-rotors
