Variable_Multi_Speed_Drive_System @SRW (Subsonic Rotary Wing)

Fundamental waves:
~ advanced of spur/helical gears variable/multi-speed drive system modeling tools and concepts
~ the variable/multi-speed gearbox concept
~ propulsion/rotor system dynamics interaction model
~ predicting inertial loads and vibrations resulting from speed changes



catch ~>Subsonic Rotary Wing !