To be able to model a rotor and its operating conditions a better way, it would be helpful to be able to turn (other word: to pitch) the rotor blade along its length axis, while the whole rotor is rotating.
This would be helpful no matter whether it is a wind turbine rotor, a helicopter rotor or a speed variable water turbine rotor.
Benefits: simulation of e. g. start-up or shutdown processes and other time dependent activities by turning (pitching) the rotor blade by a pre-defined angle within one simulation run