Consider locating small ailerons on stub wings under the rotor hubs. There might be an aileron at the front and the rear of both wings. A fast forward speed these four devices could be used to counter the vibration comming in from the power train.

The horsepower will increase somewhat.

The development of the One Atmosphere Uniform Glow Discharge Plasma (OAUGDPä) has made it possible to cover the wings and fuselage of aircraft with glow discharge plasma actuators at low energy cost. These plasma actuators can provide, through Lorentzian collisions, a purely electrohydrodynamic (EHD) coupling between an electric field in the plasma and the neutral gas in the boundary layer [1,2]. This coupling is strong enough to cause aerodynamically significant acceleration and manipulation of the boundary layer and free stream flow, including re-attachment of flow to an airfoil at high angles of attack, and the peristaltic induction of neutral gas flow by a traveling electrostatic wave on the surface of a flat plate [3-5]. We are using the 7 X 11 Low Speed Wind Tunnel at the NASA Langley Research Center to conduct experiments designed to simultaneously generate a One Atmosphere Uniform Glow Discharge Plasma (OAUGDPä) while effecting peristaltic flow acceleration of atmospheric air over a flat plate. Peristaltic flow acceleration requires a polyphase power supply to excite the OAUGDPä at progressive voltage phase angles on successive linear electrode strips. This excitation produces a traveling electrostatic wave analogous to the "moving" lights on a theatre marquee, which accelerates the ions and neutral gas to velocities of interest for aerodynamic applications [1,2]. Lorentzian momentum transfer from plasma ions, in principle, can accelerate the embedded neutral gas to velocities of hundreds of meters/second using peristaltic flow acceleration [2]. In preliminary experiments, peristaltic velocities determined with a Pitot probe have reached 6 meters/second [5]. In this paper we will present our most recent results, based on a panel in which the gas flow is accelerated to velocities above this value by a combination of paraelectric [1,2] and peristaltic effects.

My thoughts:

Could the hollow tube, which is located in the center of the torque tube, be used to pass electrical wires, which in turn activate some high frequency thrust change device at the tip?