Fluid Properties Measurements Using Wavelength Modulation Spectroscopy with First Harmonic Detection

An apparatus and method for monitoring gas velocity, temperature, and pressure in combustion systems and flow devices, in particular at inlets and isolators of scramjet engines. The invention employs wavelength modulation spectroscopy with first harmonic detection and without the need to scan the fu...

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Bibliographic Details
Published inNASA Center for AeroSpace Information (CASI). Misc. Resources
Main Authors Chen, Shin-Juh, Silver, Joel A
Format Web Resource
LanguageEnglish
Published Hampton NASA/Langley Research Center 25.11.2014
Subjects
Absorption spectra
Engine inlets
Isolators
Spectrum analysis
Supersonic aircraft
Supersonic combustion ramjet engines
Wavelength modulation
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Summary:An apparatus and method for monitoring gas velocity, temperature, and pressure in combustion systems and flow devices, in particular at inlets and isolators of scramjet engines. The invention employs wavelength modulation spectroscopy with first harmonic detection and without the need to scan the full absorption spectra.
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