Analytical and numerical burnback analysis of end burner grain with cylindrical cavity
Abstract
Burnback analysis is a critical stage in the design of solid propellant rocket motors. This paper will focus on investigating the burnback analysis of an end burner grain with central cylindrical cavity. Analytical and numerical methods for evaluating the burning surface area have been used. The analytical geometrical equations that illustrate the burning surface area evolution were developed for the two-phase burning process. The first phase is the boost phase and the second phase is the sustaining which lasts longer. A parametric model of the grain was also created in PTC Creo to simulate the burn back numerically. The results from both methods show an agreement which approves that the numerical method could be used for complex grain shapes, for which it is difficult to obtain the analytical solution. Furthermore, a MATLAB program was developed in order to compare the numerical and analytical results and to predict some of the main interior
ballistics parameters.
Keywords:
burnback / solid propellant grain / burning surface area / rocket propulsionSource:
8th International Scientific Conference on Defensive Technologies OTEH 2018, Belgrade 11-12 October, 2018, 184-188Publisher:
- Belgrade : Military Technical Institute
Funding / projects:
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, III-47029
Collections
Institution/Community
Mašinski fakultetTY - CONF AU - Alazeezi, Mohammed AU - Elek, Predrag PY - 2018 UR - https://machinery.mas.bg.ac.rs/handle/123456789/4585 AB - Burnback analysis is a critical stage in the design of solid propellant rocket motors. This paper will focus on investigating the burnback analysis of an end burner grain with central cylindrical cavity. Analytical and numerical methods for evaluating the burning surface area have been used. The analytical geometrical equations that illustrate the burning surface area evolution were developed for the two-phase burning process. The first phase is the boost phase and the second phase is the sustaining which lasts longer. A parametric model of the grain was also created in PTC Creo to simulate the burn back numerically. The results from both methods show an agreement which approves that the numerical method could be used for complex grain shapes, for which it is difficult to obtain the analytical solution. Furthermore, a MATLAB program was developed in order to compare the numerical and analytical results and to predict some of the main interior ballistics parameters. PB - Belgrade : Military Technical Institute C3 - 8th International Scientific Conference on Defensive Technologies OTEH 2018, Belgrade 11-12 October T1 - Analytical and numerical burnback analysis of end burner grain with cylindrical cavity EP - 188 SP - 184 UR - https://hdl.handle.net/21.15107/rcub_machinery_4585 ER -
@conference{ author = "Alazeezi, Mohammed and Elek, Predrag", year = "2018", abstract = "Burnback analysis is a critical stage in the design of solid propellant rocket motors. This paper will focus on investigating the burnback analysis of an end burner grain with central cylindrical cavity. Analytical and numerical methods for evaluating the burning surface area have been used. The analytical geometrical equations that illustrate the burning surface area evolution were developed for the two-phase burning process. The first phase is the boost phase and the second phase is the sustaining which lasts longer. A parametric model of the grain was also created in PTC Creo to simulate the burn back numerically. The results from both methods show an agreement which approves that the numerical method could be used for complex grain shapes, for which it is difficult to obtain the analytical solution. Furthermore, a MATLAB program was developed in order to compare the numerical and analytical results and to predict some of the main interior ballistics parameters.", publisher = "Belgrade : Military Technical Institute", journal = "8th International Scientific Conference on Defensive Technologies OTEH 2018, Belgrade 11-12 October", title = "Analytical and numerical burnback analysis of end burner grain with cylindrical cavity", pages = "188-184", url = "https://hdl.handle.net/21.15107/rcub_machinery_4585" }
Alazeezi, M.,& Elek, P.. (2018). Analytical and numerical burnback analysis of end burner grain with cylindrical cavity. in 8th International Scientific Conference on Defensive Technologies OTEH 2018, Belgrade 11-12 October Belgrade : Military Technical Institute., 184-188. https://hdl.handle.net/21.15107/rcub_machinery_4585
Alazeezi M, Elek P. Analytical and numerical burnback analysis of end burner grain with cylindrical cavity. in 8th International Scientific Conference on Defensive Technologies OTEH 2018, Belgrade 11-12 October. 2018;:184-188. https://hdl.handle.net/21.15107/rcub_machinery_4585 .
Alazeezi, Mohammed, Elek, Predrag, "Analytical and numerical burnback analysis of end burner grain with cylindrical cavity" in 8th International Scientific Conference on Defensive Technologies OTEH 2018, Belgrade 11-12 October (2018):184-188, https://hdl.handle.net/21.15107/rcub_machinery_4585 .