Abstract: NASA’s Marshall Space Flight Center (MSFC), in collaboration with NASA’s Goddard Space Flight Center (GSFC), Fox Valve Development Corp. and Oxford Lasers, is developing a set of venturi flow meters for use on the Europa Mission’s propulsion subsystem. The requirement for the venturi flow meters’ throat diameters is approximately 0.040″. An early risk reduction activity conducted by MSFC revealed that a venturi flow meter produced by FOX with a throat diameter near 0.040″ had much higher pres…