To investigate the ignition and combustion performance of themagnesium-based powdered fuel ramjet, experiment was conducted on aconnected-pipe ramjet test system. A computer code was developed toassist the design of the experimental magnesium-based powdered fuelramjet. Based upon the results of the parametric studies, an experimentalmagnesium-based powdered fuel ramjet was designed. The magnesiumpowder was pneumatically injected with ram-air. The flux of two-phasemixture of solid powder suspended in the carrier air was measured withCoriolis Mass Flow Meter. Both cold-flow evaluation of the fuel feedsystem and hot-fire engine tests were performed. Ignition was realizedsuccessfully with high temperature combustion gas and high energy sparkplug. The feasibility of self-sustaining combustion of powdered fuel wasdemonstrated by introducing different flame holding techniques intocombustor. The results predicted by numerical model are in agreementwith the observed experimental trends. The multiple start-ups of theengine were also successfully performed using the spark plug as ignitionsource. Methods for optimizing the combustion characteristic of themagnesium-based powdered fuel ramjet are put forward.
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