Effectiveness of wheel-typed grain design for hybrid rocket motor performance
Although hybrid rockets are featured with distinct advantages over solid and liquid rockets, the issues specifically related to combustion instability and lowered regression rate are the most pronounced drawbacks which hinder it from being commercially viable. In the present work, we investigate t...
| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English English |
| Published: |
2013
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/43886/ http://irep.iium.edu.my/43886/ http://irep.iium.edu.my/43886/1/2013_Effectiveness_of_Wheel-typed_Grain_Design_for_Hybrid_Rocket_Moto.pdf http://irep.iium.edu.my/43886/4/ENVMECH-00.pdf |
| Summary: | Although hybrid rockets are featured with distinct advantages over solid and liquid rockets, the
issues specifically related to combustion instability and lowered regression rate are the most pronounced
drawbacks which hinder it from being commercially viable. In the present work, we investigate the
characteristics of hybrid rocket performance using generic algorithm code for preliminary design analysis
purposes. An interior ballistic model is used for the analysis of the hybrid rocket performance. MATLAB®
environment is used to develop the design and performance analysis codes, and visualize the temporal variation
of performance characteristics. Hydroxyl Terminated Polybutadiene (HTPB) is used as a solid fuel and
liquefied oxygen as an oxidizer for evaluation purposes. We have evaluated some other design features such as
different expansion ratio for nozzle, different oxidizer initial flux and variation of initial mass. The valuation of
variety port numbers are presented as well as comparison of multiple circular grain design. It was found that
wheel-typed grain design improves 5% on the regression rate. The uses of many ports also improvise the
regression rate but require a large diameter for structural integrity. |
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