Proceedings ArticleDOI
A Novel Burn Rate Prediction Model of Rotating Solid Rocket Motors
Ran Wei,Bao Fu-ting,Lin Sun,Meng Li +3 more
- pp 54-59
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TLDR
In this paper, a novel burn rate prediction model, which tries to minimise the physical simulation requirements and mainly relies on free parameters to fit actual burn rate distribution, is proposed.Abstract:
In solid rocket motors which rotate during operation, the combustion behavior is significantly different from ordinary motors because of centripetal acceleration. Most of the existing combustion rate prediction models are complex and require the support of material parameters and empirical parameters. To simplify the calculation while maintaining simulation accuracy, a novel burn rate prediction model, which tries to minimizes the physical simulation requirements and mainly relies on free parameters to fit actual burn rate distribution, is proposed in this article. The proposed model is proven to fit with the experiment data accurately, and doesn’t require fluid or thermo-chemical simulations.read more
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An investigation of the swirling flow in a spinning end-burning rocket
TL;DR: In this article, cold flow experiments employing a porous plate to represent the propellant surface were conducted to determine the swirling flowfield which develops at various spin rates in the chamber of a spinning end-burning rocket.
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Analysis and Characteristics of Choked Swirling Nozzle Flows
TL;DR: In this article, the one-dimensional compressible flow theory was extended to isentropic axisymmetric swirling flows and a choking criterion similar to that of nonswirling flows was introduced.
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Combined Acceleration Methods for Solid Rocket Motor Grain Burnback Simulation Based on the Level Set Method
TL;DR: A detailed study of a set of combined acceleration methods for accelerating the solid rocket motor grain burnback simulation based on the level set method, and an innovative Boolean operation method, thousands of times faster than ordinary ones, was ultimately proposed.
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Combustion Performance Comparison of Propellant Grain for Hybrid Rocket Motors Manufactured by Casting and Fused Deposition Modeling
TL;DR: In this paper, two manufacturing processes were performed to obtain fuel grains for hybrid rocket engines and experimental comparisons were made between paraffin grains obtained by traditional casting methods and Acrylonitrile Butadiene Styrene (ABS) grains obtained via Direct-Digital Manufacturing (DDM).