An Experimental Investigation of Various Metallic/Polymer Fuels in a Two-Dimensional Solid Fuel Ramjet.
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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An experimental investigation was conducted of highly metallized approximately 70 by weight solid fuels burned in a two-dimensional solid fuel ramjet SFRJ. High speed motion pictures were taken of the combustion process through viewing windows located at two locations along the fuel slab length. Films revealed various ejection events ranging from small particle ejections to large flakes of burning an non-burning material leaving the surface. Nine different fuels were tested at air mass fluxes fo 0.2 and 0.5 pounds mass per inch squared per second and pressures ranging from 35 to 200 psia. There was evidence that both minor binder ingredient changes polymer and curative and the inclusion of magnesium resulted in larger required inlet step heights to sustain combustion. Most of the metallized fuels did not burn well at pressures below approximately 40 psia. Low air mass fluxes generally resulted in larger metallic surface agglomerations, larger particles in the gas phase and more dominant shedding of surface layers.
- Combustion and Ignition
- Jet and Gas Turbine Engines