Abstract
ABSTRACT The quality of the composite rocket propellant is mainly determined by the flow behaviour after the ingredients have been mixed thoroughly. The prediction of rheological behaviour is a very complicated task due to two main reasons, one being that the composite propellant is a highly filled material (≥84%w/w) and the other being that, direct determination of rheological properties are complex in nature, and vary with type of shear, time and other factors. The present study helps in investigating the effects of Aluminium Nanoparticles (ANP) on rheology of a novel composite propellant premix using the most common empirical models such as Ostwald, Modified Bingham, Herschel–Bulkley, Cross and Casson models. The effect of ANP on suitability of the models is compared and it is concluded that Cross model gives the best prediction for the studied compositions. A ranking scheme has been generated to investigate the suitability of the favourable model and the trend is analysed accordingly. All models except the Casson model, could predict the applicability with a strong correlation and least error (R 2 > 0.8).
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