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 |
| Publisher | SPIE |
| Volume | 9249 |
| ISBN (Electronic) | 9781628413120 |
| DOIs | |
| Publication status | Published - 2014 Jan 1 |
| Event | Electro-Optical and Infrared Systems: Technology and Applications XI - Amsterdam, Netherlands Duration: 2014 Sep 23 → 2014 Sep 24 |
Other
| Other | Electro-Optical and Infrared Systems: Technology and Applications XI |
|---|---|
| Country | Netherlands |
| City | Amsterdam |
| Period | 14/9/23 → 14/9/24 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering
Cite this
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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; Ryu, Dongok; Kang, Ho Gyun.
Electro-Optical and Infrared Systems: Technology and Applications XI. Vol. 9249 SPIE, 2014. 92491C.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
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 - 2014/1/1
Y1 - 2014/1/1
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.
UR - http://www.scopus.com/inward/record.url?scp=84922688488&partnerID=8YFLogxK
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U2 - 10.1117/12.2067590
DO - 10.1117/12.2067590
M3 - Conference contribution
AN - SCOPUS:84922688488
VL - 9249
BT - Electro-Optical and Infrared Systems
PB - SPIE
ER -