公开(公告)号：FR2827640B1

公开(公告)日：2009-03-20

申请号：FR0209198

申请日：2002-07-19

Applicant: NAT AEROSPACE LAB

Inventor： HASHIMOTO TOMOYUKI ,  KANDA TAKESHI ,  WATANABE MITSUO ,  HASEGAWA SATOSHI ,  KUDO KENJI ,  MURAKAMI ATHUO ,  TANI KOUICHIRO

IPC: F02K9/46 ,  F04D29/58 ,  F04D29/66

Abstract: Cavitation is reduced in a rotary pump while the pump performance is maintained by utilizing a low-temperature fluid source already present in the pump system. The fluid from the low-temperature fluid source receives heat from the fluid flowing to the pump, thereby lowering its temperature and the saturated vapor pressure, which increases the allowable margin for a decrease in fluid pressure and reduces the occurrence of cavitation. The pump system may be used for a liquid rocket engine. The fluid velocity of the fluid directed to the pump is low before releasing heat, so there is only a slight pressure loss at the pump. Accordingly, the temperature is lowered and the occurrence of cavitation is reduced within the pump.

公开(公告)号：FR2827640A1

公开(公告)日：2003-01-24

申请号：FR0209198

申请日：2002-07-19

Applicant: NAT AEROSPACE LAB

Inventor： HASHIMOTO TOMOYUKI ,  KANDA TAKESHI ,  WATANABE MITSUO ,  HASEGAWA SATOSHI ,  KUDO KENJI ,  MURAKAMI ATHUO ,  TANI KOUICHIRO

IPC: F02K9/46 ,  F04D29/58 ,  F04D29/66

Abstract: The reduction system cools the fluid flowing into the rotary pump in order to reduce cavitation in the rotary pump (1).