In the present paper, a new method for the suppression of unsteady cavitation in a turbopump inducer is proposed.An accumulator with a large volume is placed at the upstream of the inducer to equalize the here pressure around the periphery.Through the experiments with the accumulator, it was found that the occurrence region of rotating cavitation at design flow rate decreases and higher order cavitation instabilities are suppressed.
However, at low flow rate, higher kicker pro comp 10 order cavitation instabilities were found when the clearance opened to the accumulator was too large.