The Kaman K-MAX has intermeshing rotors eliminating the need for a tail ... This helicopter has dual-crossing rotors for increased precision The K-MAX uses a unique double rotor system where ...

Another important aspect of coaxial rotor performance is the interaction between the main rotor and additional propellers, especially in high-speed compound helicopters. Research has shown that at ...

The compound coaxial design of the Raider ... race but never gained ground with Western helicopter makers. This design eliminates the need for a tail rotor, which in turn reduces the total overall ...