Pressure, Velocity, and Geometry Effect on A12O3 Produced During Aluminized Propellant Combustion
1975; American Institute of Aeronautics and Astronautics; Volume: 13; Issue: 7 Linguagem: Inglês
10.2514/3.60469
ISSN1533-385X
AutoresJ. L. Eisel, B. Brown, E. W. Price,
Tópico(s)Electrohydrodynamics and Fluid Dynamics
ResumoThe effect of A12O3 particles on rocket motor stability is critical, but the mechanisms of droplet formation and roles played therein by pressure, velocity, and geometry are not well characterized. An experimental study is reported which was designed to increase this understanding. Size distribution of A12O3 particles as a function of pressure and velocity along with the effects of flow geometry was determined. There was some effect on the particle size as a function of pressure. Moderate-to-low parallel flow velocity resulted in significant changes to smaller particle size distribution as did flow vortices across an otherwise perpendicular flow system. Upon quenching of combustion products as a function of distance from the end-burning propellant surface, it was found that only at quench distances less than about 1 in. was the size distribution affected. The trend was for less smoke (d< fim) to be collected after early quench.
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