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A Computational Study of 3-D Supersonic Flow for Evaluating Aero-optic Boresight Error
DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 김종암 | - |
dc.contributor.author | 오광석 | - |
dc.date.accessioned | 2017-07-14T03:41:37Z | - |
dc.date.available | 2017-07-14T03:41:37Z | - |
dc.date.issued | 2016-02 | - |
dc.identifier.other | 000000133873 | - |
dc.identifier.uri | https://hdl.handle.net/10371/123896 | - |
dc.description | 학위논문 (석사)-- 서울대학교 대학원 : 기계항공공학부, 2016. 2. 김종암. | - |
dc.description.abstract | The present research conducts the numerical study for analyzing the relation between
three-dimensional supersonic flow structures and boresight errors of the light through the flow field. When the light propagates through a supersonic flow, drastic change of density due to the shock wave results in the deviation from the initial straight-lined trajectory, which is called boresight error. This aero-optic phenomenon is especially important for guidance systems such as flight vehicles with infrared homing tech- niques. In this thesis, boresight error is obtained via ray tracing algorithm, which directly calculates the trajectory of light through the density flow field acquired from the three-dimensional compressible flow solver. Boresight error is calculcated for the three-dimensional realistic flight vehicle geometry flying at supersonic speed, and the analysis indicates that the boresight error is dependent on the shock angle and strength in front of the nose. | - |
dc.description.tableofcontents | Chapter 1 Introduction 1
Chapter 2 Governing Equations and Numerical Methods of Fluids 3 2.1 Governing Equations of Fluid Dynamics 3 2.1.1 Three-dimensional Navier-Stokes Equations 3 2.1.2 Non-dimensionalized Form 5 2.2 Discretization of Governing Equations 5 Chapter 3 Governing Equations and Numerical Methods of Light 7 3.1 Governing Equations of Light 7 3.2 Ray Tracing Algorithm 8 Chapter 4 Numerical Results 10 4.1 CFD simulation of the Flight Vehicle 10 4.2 Boresight Error Analysis of the Flight Vehicle 14 Chapter 5 Conclusion 17 Bibliography 18 국문초록 21 | - |
dc.format | application/pdf | - |
dc.format.extent | 4900207 bytes | - |
dc.format.medium | application/pdf | - |
dc.language.iso | en | - |
dc.publisher | 서울대학교 대학원 | - |
dc.subject | 공기광학 | - |
dc.subject | 조준오차 | - |
dc.subject | 광선추적 기법 | - |
dc.subject | 초음속 유동 | - |
dc.subject | 충격파 | - |
dc.subject.ddc | 621 | - |
dc.title | A Computational Study of 3-D Supersonic Flow for Evaluating Aero-optic Boresight Error | - |
dc.type | Thesis | - |
dc.description.degree | Master | - |
dc.citation.pages | 21 | - |
dc.contributor.affiliation | 공과대학 기계항공공학부 | - |
dc.date.awarded | 2016-02 | - |
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