Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Prediction of Longitudinal and Directional Stability Derivatives for the SDM using Forced Harmonic Oscillation

강제조화운동을 이용한 SDM의 세로 및 방향 안정성 미계수 예측

  • 이형로 (인하대학교 대학원 항공우주공학과) ;
  • 이승수 (인하대학교 항공.조선.산업공학부) ;
  • 조창열 (울산대학교 기계공학부 항공우주공학전공)
  • Received : 2012.08.28
  • Accepted : 2012.10.31
  • Published : 2012.11.01
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Abstract

This paper presents the computations of the longitudinal and directional stability derivatives for the SDM(Standard Dynamic Model). The static and dynamic derivatives are evaluated at once using forced harmonic oscillations in the pitch and yaw directions. For the numerical simulations, a 3-D Euler solver that uses a dual time stepping method for unsteady time accurate simulations is applied. This work investigates the variation of the derivatives in terms of the Mach number and the several motion parameters. Good agreement of the pitch and yaw stability derivatives with previously published numerical results and experimental results are observed.

본 논문에서는 SDM 형상의 세로와 방향의 안정성 미계수를 예측하였다. 피치와 요 방향에 대한 강제조화 진동운동을 이용하여 정적 및 동적 미계수를 한 번에 계산하였다. 계산은 비정상 해석을 위한 이중시간 적분법을 적용한 3차원 Euler 해석자를 사용하여 수행하였다. 본 연구에서는 마하수뿐만 아니라 다양한 운동 변수에 따른 미계수를 예측하였다. 예측된 결과는 이전에 발표된 수치적, 실험적 연구 결과들과 비교하여 검증하였다.

Keywords

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