In the design and development of SRMs, the use of numerical tools able to predict the behavior of a given motor is important in order to decrease the planning times and costs. This paper is devoted to present the results of the internal ballistics numerical simulation of the NAWC tactical motor n. 6, from ignition to burn-out, by means of a quasi-one-dimensional unsteady numerical model, SPINBALL, coupled with a three-dimensional grain burnback model, GREG. In particular, the attention is focused on the effects on the SRM behavior of erosive burning, total pressure drops and the cause of the pressure overpeak occurring during the last part of the ignition transient. The numerical simulation shows a very good agreement with the experimental pressure trace. NAWC n. 6 internal ballistic is completely led by erosive burning, which is the root cause of the pressure peak occurring immediately after the SRM start-up.

Internal Ballistics Simulation of a NAWC Tactical SRM / Cavallini, Enrico; Favini, Bernardo; DI GIACINTO, Maurizio; F., Serraglia. - 1:(2011), pp. 868-871. (Intervento presentato al convegno 26th International Symposium on Ballistics tenutosi a Miami, FL nel 12 - 16 September 2011).

Internal Ballistics Simulation of a NAWC Tactical SRM

CAVALLINI, ENRICO;FAVINI, Bernardo;DI GIACINTO, Maurizio;
2011

Abstract

In the design and development of SRMs, the use of numerical tools able to predict the behavior of a given motor is important in order to decrease the planning times and costs. This paper is devoted to present the results of the internal ballistics numerical simulation of the NAWC tactical motor n. 6, from ignition to burn-out, by means of a quasi-one-dimensional unsteady numerical model, SPINBALL, coupled with a three-dimensional grain burnback model, GREG. In particular, the attention is focused on the effects on the SRM behavior of erosive burning, total pressure drops and the cause of the pressure overpeak occurring during the last part of the ignition transient. The numerical simulation shows a very good agreement with the experimental pressure trace. NAWC n. 6 internal ballistic is completely led by erosive burning, which is the root cause of the pressure peak occurring immediately after the SRM start-up.
2011
26th International Symposium on Ballistics
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Internal Ballistics Simulation of a NAWC Tactical SRM / Cavallini, Enrico; Favini, Bernardo; DI GIACINTO, Maurizio; F., Serraglia. - 1:(2011), pp. 868-871. (Intervento presentato al convegno 26th International Symposium on Ballistics tenutosi a Miami, FL nel 12 - 16 September 2011).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/413345
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