Open Access
Table 1
Main rotor data.
| Shaft length and main diameter | 0.851 m; 12.7 mm |
| Shaft Young modulus and Poisson coefficient | 210 GPa; 0.3 |
| Shaft and disk density | 7778 kg/m3 |
| Radius and thickness of disks | 6.3055 × 10−2 m; 1.56 × 10−2 m |
| Hydrodynamic bearing radius, length and clearance | 6.39 × 10−3 m; 6.2 × 10−3 m; 4 × 10−5 m |
| Hydrodynamic bearing oil viscosity, feeding pressure and feeding hole radius | 0.0206 Pa s; 4 × 104 Pa; 1.25 mm |
| Mass unbalance value, position, radius and initial phase | 2.37 g; Node 21; 57 mm; 0 ° |
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