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Base Drag Considerations and Projectile Optimization on 0.5-caliber Projectile


Byregowda G , ACSCE


Base Drag Considerations, Projectile Optimization, 0.5-Caliber Projectile


One of the most important aerodynamic performance characteristics for the projectiles is the total drag. The total drag for projectiles can be divided into pressure drag (excluding the base), viscous (skin friction) drag, and base drag. The base drag is a major contributor to the total drag, particularly at transonic speeds. Thus, the determination and minimization of base drag is essential in minimizing the total drag of projectiles. This Information can aid the designer to find potential areas for drag reduction and achieve a desired increase in range and/or terminal velocity of projectiles since they are affected by the projectile drag. Improved projectile performance can be achieved in several different ways up to a certain extent, and can be combined in one and the same projectile. Base drag contributes generally to a relatively large part of the total drag and depends upon the fact that the base pressure due to the resulting wake flow in the base region is lower than the ambient air pressure. Current project deals with utilization of this phenomenon for overall reduction of total drag.

Other Details

Paper ID: IJSRDV6I70006
Published in: Volume : 6, Issue : 7
Publication Date: 01/10/2018
Page(s): 8-15

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