Investigation of the Aerodynamic Benefits of Base Bleed Technology on Artillery Shells
DOI:
https://doi.org/10.5540/03.2025.011.01.0416Palabras clave:
Aerodynamics, Ballistic Trajectory, CFD, Turbulence ModelingResumen
This article discusses the use of base bleed technology to enhance the range and accuracy of artillery systems. Base bleed technology involves the use of a combustible substance to provide additional thrust to an artillery shell, which reduces drag and increases velocity. To study the phenomena of base bleed technology, the article employs computational fluid dynamics (CFD) using the Finite Volume Method (FVM). A two-dimensional and axisymmetric mesh is constructed, and the RANS turbulence models named Shear-Stress Transport κ − ω are used to simulate the aerodynamic issues involved. The article presents the results of the simulation, including the drag coefficient, pressure and velocity fields. The verification of the range extension generated by the base bleed technology is done with a proprietary MATLAB® code that implements the modified point-mass trajectory model (MPMTM), regulated by NATO (STANAG 4355), and previously validated with commercial software reference for aerospace industry named PRODAS®.
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