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초폭굉 모드 램가속기의 성능해석에 대한 이론적 연구

Analytical Study on Performance Evaluation ofSuperdetonative Mode Ram Accelerator

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초록

An analytical study on performance evaluation of superdetonative mode ram accelerator was conducted for understanding the experimental result. The quasi-one dimensional continuum, momentum, energy equations were solved under the assumption of inviscid flow. It would be noticeable that experimental result could be analytically simulated with the assumptions of inlet shockwave, temperature dependent specific heat, and additional aluminum combustion due to ablation of aluminum projectile in superdetonative operation mode. The acceleration of ram accelerator was comparable to experimental result with the consideration of the additional aluminum combustion energy by ablation of projectile. As result, the experimental result with the aluminum projectile could be affected by heat of aluminum.

Abstract

An analytical study on performance evaluation of superdetonative mode ram accelerator was conducted for understanding the experimental result. The quasi-one dimensional continuum, momentum, energy equations were solved under the assumption of inviscid flow. It would be noticeable that experimental result could be analytically simulated with the assumptions of inlet shockwave, temperature dependent specific heat, and additional aluminum combustion due to ablation of aluminum projectile in superdetonative operation mode. The acceleration of ram accelerator was comparable to experimental result with the consideration of the additional aluminum combustion energy by ablation of projectile. As result, the experimental result with the aluminum projectile could be affected by heat of aluminum.

참고문헌 (10)

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  3. Influence of Projectile Material and Gas Composition on Superdetonative Combustion in ISL's RAMAC 30, "F. Seiler", AIAA, ~, pp.paper 98-3445 (1998)
  4. Rechenprogramm für Abschätzungen zur Ram-Rohrbeschleinigung, "G. Smeets", ~, pp.ISL-Report RT 507 (1992), 92
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  6. J.-Y. Choi, "Numerical Study of Scram Accelerator Starting Characteristics", AIAA Journal, 36(6), pp.1029~1038 (1998)
  7. G. I. Taylor, "The Air Pressure on a Cone Moving at High Speeds", Proceedings of the Royal Society of London. Series A, 139(838), pp.278~ (1933)
  8. J. D. Anderson, "Modern Compressible Flow: With Historical Perspective" (1990), McGraw-Hill
  9. NASA Glenn Coefficients for Calculating Thermodynamic Properties of Individual Species, "B. J. McBride", NASA, ~, pp.TP-2002-211556 (2002)
  10. "NASA-GLENN Chemical Equilibrium Program CEA2"[URL]

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