Thanks for the response.

I do not want to prescribe the motion. I have a predefined CG location, which will vary as per the flow time due to change in the orientation of the body as a resultant of 6 DOF values. The motion has to be a resultant of the RPM of the individual rotors. So for this, how do i specify varying RPM for rotor for different flow times? and how to calculate Thrust from the RPM of the rotor? Please share any examples if available.

Thanks in advance