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

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Authors
오광석
Advisor
김종암
Major
공과대학 기계항공공학부
Issue Date
2016-02
Publisher
서울대학교 대학원
Keywords
공기광학조준오차광선추적 기법초음속 유동충격파
Description
학위논문 (석사)-- 서울대학교 대학원 : 기계항공공학부, 2016. 2. 김종암.
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.
Language
English
URI
https://hdl.handle.net/10371/123896
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Theses (Master's Degree_기계항공공학부)
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