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Scale Effects on Solid Rocket Combustion Instability Behaviour
Department of Aerospace Engineering, Ryerson University, 350 Victoria Street, Toronto, Ontario, M5B 2K3, Canada
Received: 8 December 2010; in revised form: 13 December 2010 / Accepted: 29 December 2010 / Published: 11 January 2011
Abstract: The ability to understand and predict the expected internal behaviour of a given solid-propellant rocket motor under transient conditions is important. Research towards predicting and quantifying undesirable transient axial combustion instability symptoms necessitates a comprehensive numerical model for internal ballistic simulation under dynamic flow and combustion conditions. A numerical model incorporating pertinent elements, such as a representative transient, frequency-dependent combustion response to pressure wave activity above the burning propellant surface, is applied to the investigation of scale effects (motor size, i.e., grain length and internal port diameter) on influencing instability-related behaviour in a cylindrical-grain motor. The results of this investigation reveal that the motor’s size has a significant influence on transient pressure wave magnitude and structure, and on the appearance and magnitude of an associated base pressure rise.
Keywords: combustion instability; solid rocket motor; scale effects
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MDPI and ACS Style
Greatrix, D.R. Scale Effects on Solid Rocket Combustion Instability Behaviour. Energies 2011, 4, 90-107.
Greatrix DR. Scale Effects on Solid Rocket Combustion Instability Behaviour. Energies. 2011; 4(1):90-107.
Greatrix, David R. 2011. "Scale Effects on Solid Rocket Combustion Instability Behaviour." Energies 4, no. 1: 90-107.