ACCOMPLISHMENTS

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High Temperature Combustion Diagnostic Method
Utilizing Rayleigh Scattering
Small Business Innovation Research
Aerodyne Research, Inc. Billerica, MA
A Dual-Line Detection Rayleigh scattering
technique using a copper vapor laser for
non-intrusive temperature measurements in
combustor flows
INNOVATION

• ACCOMPLISHMENTS
• Developed a Dual-Line Detection Rayleigh
  scattering      technique to allow subtraction of
  surface scattering background noise from
  Rayleigh scattering signals
• Designed and tested an instrument using this
  Rayleigh      scattering technique for
  non-intrusive measurement of      combustor
  exhaust gas temperatures
• COMMERCIALIZATION
• Provides a non-intrusive tool for dynamic time
  resolved measurement of gas turbulence and
  temperature
• Technique could be used in research for density
  measurement and mole fraction of gases
• Research test data is available to industry

Rayleigh Scattering Probe

• GOVERNMENT/SCIENCE APPLICATIONS
• System was delivered to NASA Lewis Research
  Center where it was successfully used on a
  research combustor
• The technique and research results were
  passed-on to      Polytechnic Universtiy and Air
  Force Wright Laboratories      for use in
  temperature and turbulence studies of gas
  flows and for further development of the
  technique

1983 Phase II, NAS3-24613, SS-179, 9/97 NASA
Contact - Richard Seasholtz
Lewis Research Center Instrumentation Controls
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