Spectrum Analysis of a Coaxial Dual-Rotor System with Coupling Misalignment

<div>Spectrum of misalignment and unbalance in bearing 4. (a) horizontal (Ω<sub>1</sub> = 18 Hz, Ω<sub>2</sub> = 28.8 Hz) and (b) horizontal (Ω<sub>1</sub> = 11 Hz, Ω<sub>2</sub> = 17.6 Hz).</div>

Shock and Vibration

fig27

Figure 27

Figure 27: Spectrum Analysis of a Coaxial Dual-Rotor System with Coupling Misalignment 