Dear all,

I would like to determine the polar & transverse MOI of a rotor assembly.

however, the rotor assembly provided to me has its CG coordinate system (Ix, Iy, Iz) along the Z, Y, X-axis respectively (also shown attached below).

How can i interpret the Px, Py, Pz and Lxx, Lyy, Lzz from Mass Properties please?

Must the CG coordinate align AT the coordinate system please to directly read out Lzz for polar MOI please?

Which one is the Transverse MOI please?

Regards,

Tong Ji

Beijing Jiaotong University