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

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Efficient Prediction of Aerodynamic Heating of a High Speed Aircraft for IR Signature Analysis

적외선 신호 분석을 위한 고속 항공기의 공력가열에 관한 효율적 예측

  • Lee, Ji-Hyun (Graduate School of Mechanical and Aerospace Engineering and ReCAPT, Gyeongsang National University) ;
  • Chae, Jun-Hyeok (Specialized Graduate School of Aerospace Engineering, Gyeongsang National University) ;
  • Ha, Nam-Koo (LIG Nex1, Co., Ltd.) ;
  • Kim, Dong-Geon (LIG Nex1, Co., Ltd.) ;
  • Jang, Hyun-Sung (LIG Nex1, Co., Ltd.) ;
  • Myong, Rho-Shin (Graduate School of Mechanical and Aerospace Engineering and ReCAPT, Gyeongsang National University)
  • Received : 2019.09.16
  • Accepted : 2019.10.28
  • Published : 2019.11.01
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Abstract

The ability to calculate aerodynamic heating and surface temperature is essential to ensure proper design of aircraft components in high speed flight. In this study, various empirical formulas for efficiently calculating aerodynamic heating of aircraft were first analyzed. A simple computational code based on empirical formulas was developed and then compared with commercial codes; ANSYS FLUENT based on the Navier-Stokes-Fourier equation, and ThermoAnalytics MUSES based on an empirical formula. The code was found to agree well with the results of FLUENT in the wall and stagnation point temperatures. It also showed excellent agreement with MUSES, within 1% and 5% in temperature and heat flux, respectively.

고속으로 비행하는 항공기의 구성품에 관한 적절한 설계를 위해서는 공기역학적 가열과 표면 온도를 계산하는 능력이 필수적이다. 본 연구에서는 항공기의 공력가열을 효율적으로 계산하기 위한 다양한 경험식들을 분석한 다음, 경험식에 기초한 전산코드를 개발하였다. 계산된 결과는 Navier-Stokes-Fourier 방정식 기반의 ANSYS FLUENT와 경험식에 기초한 ThermoAnalytics사의 MUSES 코드의 결과와 비교하였다. FLUENT의 계산결과와는 벽면 및 정체점 온도에 대해 매우 일치하였다. MUSES 코드와도 온도와 열유속에서 각각 1%, 5%의 차이를 보여주어 매우 근접한 결과를 보여 주었다.

Keywords

Acknowledgement

Supported by : 엘아이지넥스원(주)

본 연구는 엘아이지넥스원(주)에서 지원하는 용역과제의 일환으로 수행되었습니다.

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