A Comparison Study on Co- and Counterrotating Dual-Rotor System with Squeeze Film Dampers and Intermediate Bearing

Table 5

Unbalance configuration and inertia properties of disks.

	Inner rotor		Outer rotor
	Disk 1	Disk 2	Disk 3	Disk 4
Unbalance (×10^−5 kg⋅m)	2	4	1	2
Mass (kg)	2.3386	2.3386	3.2590	1.6303
Polar moment of inertia (kg⋅m^2)	0.00815	0.00815	0.01561	0.00661