Abstract
A vortex shedding flow meter was developed to measure flow rates of hypergolic propellants with no moving parts. The inside diameter of the flow meter (0.41 inches) was smaller than any present commercially available meter. Experiments were run to determine the best shape and size of the shedder bar and the best position of the pressure sensor relative to the shedder bar. Problems encountered and overcome in the development of the flow meter were described. The volume flow rate through the meter was linear with vortex shedding frequency to within 1 % of the full scale reading (15 .gallons per minute). The pressure drop through the meter at full scale was 12.6 psi. Static pressure requirements to prevent cavitation were also discussed.
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