Evaluation of the Performance of the LCC Windows for Use in Laser Doppler Velocimetry

Abstract

In order to get improved Laser Doppler Velocimeter (LDV) measurements in the LCC, two glass windows were acquired. The windows were specified to have surface and material quality suitable for quantitative LDV measurements, and much higher than that achievable with existing acrylic windows. Quantitative LDV measurements were taken of the flow in the empty channel both through the new glass window and through an acrylic window in order to compare window performance. The glass windows were found to show benefits for use with LDV in increased measurement accuracy, increased access to the flowfield, decreased time to obtain measurements, and increased capability to make spectral measurements.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2008
Accession Number
ADA482041

Entities

People

  • Christopher J. Chesnakas

Organizations

  • Naval Surface Warfare Center Carderock Division

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Argon Lasers
  • Channel Flow
  • Data Rate
  • Diffraction
  • Flow
  • Laser Beams
  • Lasers
  • Materials
  • Measurement
  • Scattering
  • Spectra
  • Surface Warfare
  • Test And Evaluation
  • Tunnels
  • Velocimeters

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Optical Physics and Photonics.
  • Reinforced Composite Materials

Technology Areas

  • Directed Energy