A coaxial counter-rotating rotor system for a hybrid aircraft includes an
upper swashplate assembly and a lower swashplate assembly with a coaxial
transmission system therebetween. Movement of the upper and lower
swashplate assembly is reflected about a midplane of the coaxial
transmission housing to generate sufficient cyclic and/or collective
pitch inputs within a compact structural in which the rotor systems are
closely spaced along an axis of rotation.