Erosive Burning Study of Stick Propellants.
PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF MECHANICAL ENGINEERING
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A theoretical model was solved numerically for simulating erosive-burning processes occurring inside the center perforation of an unslotted NOSOL-363 stick propellant. Results show that the erosive-burning phenomenon is caused by the enhanced heat feedback from the gas phase to solid phase resulting from the combined effect of increased turbulent mixing and reduction in flame stand-off distance from the burning surface. The real-time X-ray radiography system was demonstrated to be a powerful and reliable tool for nonintrusive measurements of instantaneous burning rates. A model was validated by experimental data in terms of time variation of internal diameter distributions. Thermal wave structures of NOSOL-363 stick propellants under erosive- and strand-burning conditions were measured by fine-wire thermocouples.
- Ammunition and Explosives
- Combustion and Ignition