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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 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 languageEnglish
Title of host publicationElectro-Optical and Infrared Systems
Subtitle of host publicationTechnology and Applications XI
PublisherSPIE
Volume9249
ISBN (Electronic)9781628413120
DOIs
Publication statusPublished - 2014 Jan 1
EventElectro-Optical and Infrared Systems: Technology and Applications XI - Amsterdam, Netherlands
Duration: 2014 Sep 232014 Sep 24

Other

OtherElectro-Optical and Infrared Systems: Technology and Applications XI
CountryNetherlands
CityAmsterdam
Period14/9/2314/9/24

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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

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 Electro-Optical and Infrared Systems: Technology and Applications XI (Vol. 9249). [92491C] SPIE. https://doi.org/10.1117/12.2067590