Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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SHAPE OPTIMIZATION OF UCAV FOR AERODYNAMIC PERFORMANCE IMPROVEMENT AND RADAR CROSS SECTION REDUCTION

공력 향상과 RCS 감소를 고려한 무인 전투기의 형상 최적설계

  • Jo, Y.M. (Aerospace Engineering, KAIST) ;
  • Choi, S.I. (Aerospace Engineering & Cho Chun Sik Graduate School for Green Transportation)
  • 조영민 (한국과학기술원 항공우주공학전공) ;
  • 최성임 (한국과학기술원 항공우주공학전공 및 조천식 녹색교통대학원)
  • Received : 2012.03.15
  • Accepted : 2012.11.12
  • Published : 2012.12.31
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Abstract

Nowadays, Unmanned Combat Air Vehicle(UCAV) has become an important aircraft system for the national defense. For its efficiency and survivability, shape optimization of UCAV is an essential part of its design process. In this paper, shape optimization of UCAV was processed for aerodynamic performance improvement and Radar Cross Section(RCS) reduction using Multi Objective Genetic Algorithm(MOGA). Lift and induced drag, friction drag, RCS were calculated using panel method, boundary layer theory, Physical Optics(PO) approximation respectively. In particular, calculation applied Radar Absorbing Material(RAM) was performed for the additional RCS reduction. Results are indicated that shape optimization is performed well for improving aerodynamic performance, reducing RCS. Further study will be performed with higher fidelity tools and consider other design segments including structure.

Keywords

References

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