한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)

  • 제22권3호
  • /
  • Pages.360-368
  • /
  • 2019
  • /
  • 1598-9127(pISSN)
  • /
  • 2636-0640(eISSN)
한국군사과학기술학회 (The Korea Institute of Military Science and Technology)
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풍동시험과 CFD 해석 결과를 반영한 유도무기 조종날개 공력계수 모델링 기법 연구

A Study on the Modeling Method of Missile Fin Aerodynamic Coefficient using Wind Tunnel Test and CFD

  • 임경진 (국방과학연구소 제1기술연구본부)
  • Yim, Kyung Jin (The 1st Research and Development Institute, Agency for Defense Development)
  • 투고 : 2019.02.21
  • 심사 : 2019.04.12
  • 발행 : 2019.06.05
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초록

A study on aerodynamic modeling was performed to predict the hinge moments required for initial design of missile. Fin aerodynamic coefficients were modeled using the equivalent angle of attack method based on the wind tunnel test. In addition, CFD analysis was performed to calculate the dynamic pressure around the body and improve the accuracy of aerodynamic coefficients. The aerodynamic coefficient accuracy was verified by comparisons of the coefficient acquired from wind tunnel test and prediction of flow conditions, not involved in the model built-up. It was confirmed that fin aerodynamic coefficients can be predicted effectively by using the proposed method.

키워드

GSGGBW_2019_v22n3_360_f0001.png 이미지

Fig. 1. Body coordinate system and aerodynamic coefficients[5]

GSGGBW_2019_v22n3_360_f0002.png 이미지

Fig. 2. Fin coordinate system and aerodynamic coefficients

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Fig. 3. Correlation of normal-force coefficient with equivalent angle of attack[7]

GSGGBW_2019_v22n3_360_f0004.png 이미지

Fig. 4. Correlation of axial center-of-pressure position with normal-force coefficient[7]

GSGGBW_2019_v22n3_360_f0005.png 이미지

Fig. 5. Fin number(ø = 0°, rear view)

GSGGBW_2019_v22n3_360_f0006.png 이미지

Fig. 6. Normal-force coefficient(Wind tunnel test)

GSGGBW_2019_v22n3_360_f0007.png 이미지

Fig. 7. Correlation of normal-force coefficient with equivalent angle of attack

GSGGBW_2019_v22n3_360_f0008.png 이미지

Fig. 8. Correlation of axial center-of-pressure position with normal-force coefficient

GSGGBW_2019_v22n3_360_f0009.png 이미지

Fig. 9. Normal-force coefficient

GSGGBW_2019_v22n3_360_f0010.png 이미지

Fig. 10. Mach contour(M = 3.0, α = 10°)

GSGGBW_2019_v22n3_360_f0011.png 이미지

Fig. 11. Modeling QLOCAL (M = 3.0)

GSGGBW_2019_v22n3_360_f0012.png 이미지

Fig. 12. Comparison of Normal-force coefficient between WT data and modeling data(M = 3.0)

GSGGBW_2019_v22n3_360_f0013.png 이미지

Fig. 13. Comparison of Normal-force coefficient between WT data and modeling data using QLOCAL (M = 3.0)

GSGGBW_2019_v22n3_360_f0014.png 이미지

Fig. 14. Prediction of normal-force coefficient (with QLOCAL)

GSGGBW_2019_v22n3_360_f0015.png 이미지

Fig. 15. Prediction of axial center-of-pressure (with QLOCAL)

Table 1. Wind tunnel test(WT) conditions

GSGGBW_2019_v22n3_360_t0001.png 이미지

참고문헌

  1. Michael R Mendenhall, "Tactical Missile Aerodynamics Prediction Methodology," AIAA, Vol. 142, pp. 18-35, 1991.
  2. J. G. Lee, S. Y. Oh, Y. B. Lee and S. G. Kim, "Hinge Moment Measurements of Model Control Surface Using a Servo Motor," The Korean Society for Aeronautical and Space Sciences, pp. 1037-1040, November, 2013.
  3. K. T. Kang, Y. S. Back and K. S. Lee, "Hinge Moment Prediction for Control Fins of Missile at Supersonic Speed," Korean Society for Computational Fluids Engineering, pp. 163-165, 2014.
  4. K. H. Hur, C. Sun and J. E. Lee, "A Study on the Aerodynamic Modeling of BT Vehicle," 7th National Congress on Fluid Engineering, pp. 430-431, August, 2012.
  5. L. Auman et al, "Missile Datcom User's Manual - 2018 Revision," U.S. Army Aviation & Missile Research, Development and Engineering Center, p. 3, August, 2008.
  6. Eugene L. Fleeman., "Tactical Missile Design," AIAA, 2nd Edition, pp. 48-45, 2007.
  7. Michael R Mendenhall, "Tactical Missile Aerodynamics Prediction Methodology," AIAA, Vol. 142, pp. 115-169, 1991.
  8. John D. Anderson, Jr., "Modern Compressible Flow with Historical Perspective," McGraw-Hill, America, 3rd Edition, pp. 127-149, 2004.
  9. Danel J. Lesieutre, et. al., "M3HAX Aerodynamic Analysis for Finned Vehicles with Axisymmetric Bodies," Nielsen Engineering and Research, Inc. Canada, p. 18, 1996.