Fixed Channel of Multistage Turbopump

(1st Report : Return Vane Determining Inlet Flow Condition for Next Stage)

Abstract

The effects of the return vane profile on the multistage turbopump efficiency were investigated experimentally, taking account of the inlet flow condition for the next stage impeller. It is desirable to set the trailing edge of the return vane on the outer diameter position of next stage suction cover. Then, the swirl stop ranging the trailing edge and the main shaft contributes fruitfully to suppress the unstable performance at the low discharge.