The atomization of a gelled boron slurry fuel using two commercially availableairblast atomizers was studied at atmospheric pressure in non-reacting flow. Theatomization of water was also characterized for comparison. Each atomizer was operatedat two different liquid mass flow rates and several air/ fuel ratios. Drop size distributionwas measured using a Malvern 2600 HSD Laser Diffraction Particle Sizer, Drop sizesacceptable for use in ramjet combustors could be obtained for the gelled slurry fuel fromboth atomizers. However, this required air/fuel ratios too high for practical applications.It appears that secondary atomization methods or different types of atomizers will berequired to obtain high ramjet combustion efficiencies with these fuels if they are to beused over typical ramjet operating envelopes.
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