The current frame order models

In this advanced topic chapter, the equations for the various frame order models will be derived and validated using simulations. The models include:

1. Rigid
2. Rotor
3. Free rotor
4. Isotropic cone
5. Isotropic cone, torsionless
6. Isotropic cone, free rotor
7. Pseudo-ellipse
8. Pseudo-ellipse, torsionless
9. Pseudo-ellipse, free rotor
10. Double rotor

For a basic introduction to the frame order concept and the modelling of the tilt and torsion components, see Section 12.3.