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Experimental Study on Configuration Effects of Supersonic Projectiles in Transitional Ballistic Regimes

  • C. M. Athira
  • G. RajeshEmail author
Conference paper

Abstract

The flow field associated with a moving projectile in the transitional ballistic regime is highly complicated and unsteady. The projectile interactions with the surrounding flow field affect the aerodynamic force acting on the projectile and have great impact on its stability, control, and dispersion characteristics. There are interesting fluid dynamic phenomena in this regime where the projectile interacts with the unsteady jet. One of the profound interactions is a situation in which the projectile overtakes the primary blast wave in the vicinity of the gun muzzle itself where the blast wave is very strong. In the present study, experiments are conducted with projectiles of cylindrical, conical, and hemispherical shapes, in order to understand the characteristics of projectile-flow field interactions and the projectile overtaking phenomenon, in particular. Flow field is captured using time-resolved schlieren flow visualization technique. The behavior of different shaped projectiles in the transitional ballistic regime is analyzed to understand the configuration effects. The various overtaking regimes are also identified by constructing the x-t diagram from the trajectory information obtained by image processing.

References

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    Z. Jiang et al., Numerical study on blast flow fields induced by supersonic projectiles discharged from shock tubes. Phys. Fluids 10, 277 (1997)CrossRefGoogle Scholar
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    H. Ahmadikia, E. Shirani, Transonic and Supersonic Overtaking of a Projectile Preceding a Shock Wave, International Center for Theoretical Physics, Rept. IC/2001/48 (2001)Google Scholar
  3. 3.
    G. Rajesh et al., Projectile aerodynamics overtaking a shock wave. J. Spacecr. Rockets 45, 1251 (2008)CrossRefGoogle Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Aerospace EngineeringIndian Institute of Technology MadrasChennaiIndia

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