Numerical Investigation on the Effects of Air Dissociation upon Hypersonic Projectile in Standard Atmospheric Air
In this paper, the aerodynamic and thermal effects on hypersonic projectile which is launched by ground-based railgun are investigated. Air dissociation effect, which is the typical chemical reaction in hypersonic regime, is focused due to this influence to aerodynamic coefficient and temperature. Around projectile tip, strong dissociation reaction is generated due to high pressure and temperature. Also, there are dissociation region in the back part because of recirculation region. While the effect of dissociation to aerodynamic coefficient is small, surface temperature is affected by dissociation reaction.
- 2.C. Robert et al., The Feasibility of Railgun Horizontal-Launch Assist, Technical Report KSC-13597, KSC-2010-010, NASA, 2011Google Scholar
- 4.V.E. Fortov, Railgun experiment and computer simulation of hypervelocity impact of lexan projectile on aluminum target. Int. J. Impact Eng. 33, 253–262 (2006)Google Scholar
- 5.Furudate et al., Behavior of two-temperature model in intermediate hypersonic flow, in Aero space Nunmerical Simulation Technology Symposium, vol. 41, 1999Google Scholar
- 6.Jorg Behrens et al., Hypersonic and electromagnetic Railgun Technology as a future alternative for the launce of suborbital payloads, in Proceedings of the 16th ESA Symposium on European Rocket and Balloon Programes and Related Research, 2–5, 2003Google Scholar
- 8.C. Park, Nonequilibrium Hypersonic Aerothermodynamics (Awielyey Interscience Publication, New York, 1990)Google Scholar