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A Computational Study of 3-D Supersonic Flow for Evaluating Aero-optic Boresight Error

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dc.contributor.advisor김종암-
dc.contributor.author오광석-
dc.date.accessioned2017-07-14T03:41:37Z-
dc.date.available2017-07-14T03:41:37Z-
dc.date.issued2016-02-
dc.identifier.other000000133873-
dc.identifier.urihttps://hdl.handle.net/10371/123896-
dc.description학위논문 (석사)-- 서울대학교 대학원 : 기계항공공학부, 2016. 2. 김종암.-
dc.description.abstractThe 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.
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dc.description.tableofcontentsChapter 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
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dc.formatapplication/pdf-
dc.format.extent4900207 bytes-
dc.format.mediumapplication/pdf-
dc.language.isoen-
dc.publisher서울대학교 대학원-
dc.subject공기광학-
dc.subject조준오차-
dc.subject광선추적 기법-
dc.subject초음속 유동-
dc.subject충격파-
dc.subject.ddc621-
dc.titleA Computational Study of 3-D Supersonic Flow for Evaluating Aero-optic Boresight Error-
dc.typeThesis-
dc.description.degreeMaster-
dc.citation.pages21-
dc.contributor.affiliation공과대학 기계항공공학부-
dc.date.awarded2016-02-
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Theses (Master's Degree_기계항공공학부)
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