Measurements of emission spectra from a shock layer of a blunt body in arc-heated gas

Makoto Hirakawa, Ken-Ichi Abe, Michio Nishida, Ken Ichiro Takeishi, Katsuhiro Itoh

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Abstract

Arcjet tests were conducted to investigate the catalytic effects of two types of thermal protection coating having different surface catalytic efficiencies. One is BHE (black high emittance) coating with lower catalytic efficiency, the other is RF (reference) coating with higher catalytic efficiency. Experiments consist of the measurements of emission spectra from the shock layer of the model and heat flux to the model. As a working gas, a mixture of 80% N2 and 20% O2 by volume was used in the tests. Spectroscopic measurements showed that the difference of catalytic efficiency between the two coatings slightly appeared on oxygen atomic spectra. The spectral intensities of atomic oxygen measured for the RF model were slightly smaller than those for the BHE model. In addition, time-averaged heat fluxes into the models were measured and the results showed that heat flux into the RF model was larger than that into the BHE model by 5.2%.

Original languageEnglish
Publication statusPublished - Dec 1 2001
Event10th AIAA/NAL-NASDA-ISAS International Space Planes and Hypersonic Systems and Technologies Conference 2001 - Kyoto, Japan
Duration: Apr 24 2001Apr 27 2001

Other

Other10th AIAA/NAL-NASDA-ISAS International Space Planes and Hypersonic Systems and Technologies Conference 2001
CountryJapan
CityKyoto
Period4/24/014/27/01

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All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Aerospace Engineering
  • Control and Systems Engineering

Cite this

Hirakawa, M., Abe, K-I., Nishida, M., Takeishi, K. I., & Itoh, K. (2001). Measurements of emission spectra from a shock layer of a blunt body in arc-heated gas. Paper presented at 10th AIAA/NAL-NASDA-ISAS International Space Planes and Hypersonic Systems and Technologies Conference 2001, Kyoto, Japan.