Abstract
Rocket turbopump has suffered from rotor vibration problems. Mechanical seal is often applied to separate turbine from pump in the turbopumps. In this study, we measured rotordynamic characteristic of mechanical seal under whirling motion. Rotordynamic force of this seal was measured by the rotordynamic test stand (JARTS) with active magnetic bearings. It was found that the mechanical seal has extremely small rotordynamic force and do not affect rotor vibration.
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