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A Computational Study of 3-D Supersonic Flow for Evaluating Aero-optic Boresight Error
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- Authors
- Advisor
- 김종암
- Major
- 공과대학 기계항공공학부
- Issue Date
- 2016-02
- Publisher
- 서울대학교 대학원
- 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
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