Temperature is a critical parameter to diagnose the high temperature hypersonic combustion flow. A fiber-spectrometer
based measurement system and the correlated theoretical models to measure the radiation temperature of the “optical
thick” hypersonic combustion flow were established in this paper. The spectral responsivity of the fiber-spectrometer
based measurement system was measured at NIM in lab condition, and the spectral radiance and emissivity of the
hypersonic combustion flow were measured in-situ at the combustion wind tunnel of BISLMV. Preliminary experimental
results showed the spectral emissivity of the combustion flow was about 0.1 in the spectral range 500-800nm without
strong spectral selection, which resulted in the radiation temperature about 2200 K, with relative standard uncertainty
about 10%.
A high speed, high resolution spectrum measurement system based on fiber-spectrometer was built to diagnose the high
temperature hypersonic combustion flow. The theoretical models of the spectral radiance and transmittance of the
hypersonic combustion flow were established in this paper. The spectral radiance and transmittance of the hypersonic
combustion flow were measured at the combustion wind tunnel of BISLMV. Preliminary experiments showed that the
spectral radiance behaved not like typical gas radiation but have a continuous spectrum, and the spectral transmittance of
the combustion gas flow was about 0.9 in the spectral range 500-900nm without strong spectral selection. The results
obtained in this paper will benefit the surface temperature measurement of the thermal protection materials of space
vehicle tested at BISLMV.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.