A new ray tracing model for aero-optical effect simulation of laminar flow field surrounding highly supersonic projectile with cone shape head

Sehyun Seong; Sug Whan Kim; Sangmin Kim; Dongok Ryu; Ho Gyun Kang

doi:10.1117/12.2067590

A new ray tracing model for aero-optical effect simulation of laminar flow field surrounding highly supersonic projectile with cone shape head

Sehyun Seong, Sug Whan Kim, Sangmin Kim, Dongok Ryu, Ho Gyun Kang

Department of Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Citations (Scopus)

Abstract

We present the apparent optical performance variation of an infrared sensor caused by laminar flow field surrounding a highly supersonic projectile with cone shape head. An optical ray tracing model was constructed and numerical simulations of the aero-optical effects were performed by computational fluid dynamics (CFD) analysis and isodensity surface based ray tracing computation. To maximize modeling and computation efficiency, the number of sampling isodensity layers was reduced to less than 5 for improved discretization of the inhomogeneous gradient index (GRIN) media. Using this method, the simulation results show that the BSE is smaller than about 2.8 arcsec when the projectile flies at 25, 35, 50 km in altitude, Mach 4, 6 in speed, and 0°, 10deg; in angle of attack. The technical details and implications of the optical ray tracing model are presented together with the simulation results.

Original language	English
Title of host publication	Electro-Optical and Infrared Systems
Subtitle of host publication	Technology and Applications XI
Editors	David A. Huckridge, Reinhard Ebert
Publisher	SPIE
ISBN (Electronic)	9781628413120
DOIs	https://doi.org/10.1117/12.2067590
Publication status	Published - 2014
Event	Electro-Optical and Infrared Systems: Technology and Applications XI - Amsterdam, Netherlands Duration: 2014 Sept 23 → 2014 Sept 24

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9249
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Electro-Optical and Infrared Systems: Technology and Applications XI
Country/Territory	Netherlands
City	Amsterdam
Period	14/9/23 → 14/9/24

Bibliographical note

Publisher Copyright:
© 2014 SPIE.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2067590

Cite this

Seong, S., Kim, S. W., Kim, S., Ryu, D., & Kang, H. G. (2014). A new ray tracing model for aero-optical effect simulation of laminar flow field surrounding highly supersonic projectile with cone shape head. In D. A. Huckridge, & R. Ebert (Eds.), Electro-Optical and Infrared Systems: Technology and Applications XI Article 92491C (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9249). SPIE. https://doi.org/10.1117/12.2067590

Seong, Sehyun ; Kim, Sug Whan ; Kim, Sangmin et al. / A new ray tracing model for aero-optical effect simulation of laminar flow field surrounding highly supersonic projectile with cone shape head. Electro-Optical and Infrared Systems: Technology and Applications XI. editor / David A. Huckridge ; Reinhard Ebert. SPIE, 2014. (Proceedings of SPIE - The International Society for Optical Engineering).

@inproceedings{f3a642608f854fdd8dd8d68f387ca77b,

title = "A new ray tracing model for aero-optical effect simulation of laminar flow field surrounding highly supersonic projectile with cone shape head",

abstract = "We present the apparent optical performance variation of an infrared sensor caused by laminar flow field surrounding a highly supersonic projectile with cone shape head. An optical ray tracing model was constructed and numerical simulations of the aero-optical effects were performed by computational fluid dynamics (CFD) analysis and isodensity surface based ray tracing computation. To maximize modeling and computation efficiency, the number of sampling isodensity layers was reduced to less than 5 for improved discretization of the inhomogeneous gradient index (GRIN) media. Using this method, the simulation results show that the BSE is smaller than about 2.8 arcsec when the projectile flies at 25, 35, 50 km in altitude, Mach 4, 6 in speed, and 0°, 10deg; in angle of attack. The technical details and implications of the optical ray tracing model are presented together with the simulation results.",

keywords = "Aero-optical effect, Conical projectile, GRIN media discretization, Highly supersonic, Laminar flow field",

author = "Sehyun Seong and Kim, {Sug Whan} and Sangmin Kim and Dongok Ryu and Kang, {Ho Gyun}",

note = "Publisher Copyright: {\textcopyright} 2014 SPIE.; Electro-Optical and Infrared Systems: Technology and Applications XI ; Conference date: 23-09-2014 Through 24-09-2014",

year = "2014",

doi = "10.1117/12.2067590",

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Seong, S, Kim, SW, Kim, S, Ryu, D & Kang, HG 2014, A new ray tracing model for aero-optical effect simulation of laminar flow field surrounding highly supersonic projectile with cone shape head. in DA Huckridge & R Ebert (eds), Electro-Optical and Infrared Systems: Technology and Applications XI., 92491C, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9249, SPIE, Electro-Optical and Infrared Systems: Technology and Applications XI, Amsterdam, Netherlands, 14/9/23. https://doi.org/10.1117/12.2067590

A new ray tracing model for aero-optical effect simulation of laminar flow field surrounding highly supersonic projectile with cone shape head. / Seong, Sehyun; Kim, Sug Whan; Kim, Sangmin et al.
Electro-Optical and Infrared Systems: Technology and Applications XI. ed. / David A. Huckridge; Reinhard Ebert. SPIE, 2014. 92491C (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9249).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - A new ray tracing model for aero-optical effect simulation of laminar flow field surrounding highly supersonic projectile with cone shape head

AU - Seong, Sehyun

AU - Kim, Sug Whan

AU - Kim, Sangmin

AU - Ryu, Dongok

AU - Kang, Ho Gyun

PY - 2014

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N2 - We present the apparent optical performance variation of an infrared sensor caused by laminar flow field surrounding a highly supersonic projectile with cone shape head. An optical ray tracing model was constructed and numerical simulations of the aero-optical effects were performed by computational fluid dynamics (CFD) analysis and isodensity surface based ray tracing computation. To maximize modeling and computation efficiency, the number of sampling isodensity layers was reduced to less than 5 for improved discretization of the inhomogeneous gradient index (GRIN) media. Using this method, the simulation results show that the BSE is smaller than about 2.8 arcsec when the projectile flies at 25, 35, 50 km in altitude, Mach 4, 6 in speed, and 0°, 10deg; in angle of attack. The technical details and implications of the optical ray tracing model are presented together with the simulation results.

AB - We present the apparent optical performance variation of an infrared sensor caused by laminar flow field surrounding a highly supersonic projectile with cone shape head. An optical ray tracing model was constructed and numerical simulations of the aero-optical effects were performed by computational fluid dynamics (CFD) analysis and isodensity surface based ray tracing computation. To maximize modeling and computation efficiency, the number of sampling isodensity layers was reduced to less than 5 for improved discretization of the inhomogeneous gradient index (GRIN) media. Using this method, the simulation results show that the BSE is smaller than about 2.8 arcsec when the projectile flies at 25, 35, 50 km in altitude, Mach 4, 6 in speed, and 0°, 10deg; in angle of attack. The technical details and implications of the optical ray tracing model are presented together with the simulation results.

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KW - Conical projectile

KW - GRIN media discretization

KW - Highly supersonic

KW - Laminar flow field

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ER -

Seong S, Kim SW, Kim S, Ryu D, Kang HG. A new ray tracing model for aero-optical effect simulation of laminar flow field surrounding highly supersonic projectile with cone shape head. In Huckridge DA, Ebert R, editors, Electro-Optical and Infrared Systems: Technology and Applications XI. SPIE. 2014. 92491C. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2067590

A new ray tracing model for aero-optical effect simulation of laminar flow field surrounding highly supersonic projectile with cone shape head

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