Numerical Simulations of Aero-Optical Distortions Around Various Turret Geometries

Abstract

At compressible flow speeds, the flow around blunt objects such as optical turrets creates time- and spatially-varying density fields. These inhomogeneous density fields mean that an inhomogeneous index-of-refraction field exists around the optical-turret. As a result, as light traverses through this field, an otherwise collimated wavefront becomes distorted. these distortions reduce the far field irradiance that can be delivered on a target.

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Document Details

Document Type
Technical Report
Publication Date
Jun 12, 2013
Accession Number
AD1042294

Entities

People

  • Chris Porter
  • Jürgen Seidel
  • Robert Decker
  • Thomas Mclaughlin

Organizations

  • United States Air Force Academy

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Compressible Flow
  • Computational Fluid Dynamics
  • Distortion
  • Flow
  • Flow Fields
  • Geometry
  • High Performance Computing
  • Optical Properties
  • Optics
  • Pressure Measurement
  • Refraction
  • Refractive Index
  • Simulations
  • Strehl Ratio
  • Training
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Image Processing and Computer Vision.
  • Plasma Physics / Magnetohydrodynamics