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

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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.
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
dc.format.extent4900207 bytes-
dc.publisher서울대학교 대학원-
dc.subject광선추적 기법-
dc.subject초음속 유동-
dc.titleA Computational Study of 3-D Supersonic Flow for Evaluating Aero-optic Boresight Error-
dc.contributor.affiliation공과대학 기계항공공학부-
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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