Abstract
Turbopumps are high-speed turbomachinery which feed the cryogenic propellant to the combustion chamber for rocket engines. Rotor vibration problems caused by the increase of power have occurred under development of turbopumps. Authors had proposed the morphology design method as way of resolving the rotor vibration problems. In this study, superior solutions are investigated by the morphology design method. Besides, the effect of the rotor morphologies on vibration characteristics such as system damping ratios and vibration amplitudes are discussed. The optimal rotor arrangement for the suppression of the rotor vibration was proposed by the morphology design method. Trend of the vibration characteristics for the permutation and direction of the rotor elements was shown.
