Journal ArticleDOI
Measurement and analysis of nitric oxide radiation in an arc-jet flow
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In this article, the centerline enthalpy value deduced from heat transfer measurements and the NOZNT code was used to predict the freestream conditions in an arcjet wind tunnel flow.Abstract:
On the bases of the centerline enthalpy value deduced from heat transfer measurements and the NOZNT code, it is possible to predict the freestream conditions in an arcjet wind tunnel flow. The translational-rotational and vibrational temperature of NO is nearly reproducible by NOZNT. Relative to the electron and electronic temperatures, the vibrational temperature of N2 and NO are significantly lower at enthalpies of less than 45 MJ/kg. The enthalpy deduced from spectroscopic measurements is in rough agreement with that deduced from heat transfer measurements.read more
Citations
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Review of chemical-kinetic problems of future NASA missions, II: Mars entries
TL;DR: A number of chemical-kinetic problems related to phenomena occurring behind a shock wave surrounding an object flying in the earth atmosphere are discussed in this paper, including the nonequilibrium thermochemical relaxation phenomena behind a wave surrounding the flying object.
Review of chemical-kinetic problems of future NASA missions. I: Earth entries
TL;DR: A number of chemical-kinetic problems related to phenomena occurring behind a shock wave surrounding an object flying in the earth atmosphere are discussed in this article, including the nonequilibrium thermochemical relaxation phenomena behind a wave surrounding the flying object.
Journal ArticleDOI
Arcjet flow properties determined from laser-induced fluorescence of atomic nitrogen
TL;DR: In this article, the flow properties, which include velocity, translational temperature, and N concentration, were measured simultaneously over a range of facility operating conditions for N2-argon test gas flows in the 30 cm-diameter nozzle.
Journal ArticleDOI
Heat transfer—a review of 1994 literature
E. R. G. Eckert,Richard J Goldstein,W. E. Ibele,Suhas V. Patankar,Terrence W. Simon,Paul J Strykowski,Kumar K. Tamma,Thomas H. Kuehn,Avram Bar-Cohen,Joachim Heberlein,D.L. Hofeldt,Jane H. Davidson,John C. Bischof,Francis A Kulacki +13 more
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Characterization of arcjet flows using laser-induced fluorescence
TL;DR: A sensor based on laser-induced fluorescence has been installed at the 20MW NASA Ames Aerodynamic Heating Facility as discussed by the authors, which provides new, quantitative, real-time information about properties of the arcjet flow in the highly dissociated, partially ionized, nonequilibrium regime.
References
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Book
Nonequilibrium hypersonic aerothermodynamics
TL;DR: In this paper, nonequilibrium phenomena in hypersonic flows are examined on the basis of theoretical models and selected experimental data, in an introduction intended for second-year graduate students of aerospace engineering.
Journal ArticleDOI
Review of chemical-kinetic problems of future NASA missions, II: Mars entries
TL;DR: A number of chemical-kinetic problems related to phenomena occurring behind a shock wave surrounding an object flying in the earth atmosphere are discussed in this paper, including the nonequilibrium thermochemical relaxation phenomena behind a wave surrounding the flying object.
Journal ArticleDOI
Assessment of two-temperature kinetic model for ionizing air
TL;DR: In this paper, a two-temperatur e chemical-kinet ic model for air is assessed by comparing theoretical results with existing experimental data obtained in shock tubes, ballistic ranges, and flight experiments.
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Assessment of a two-temperature kinetic model for dissociating and weakly ionizing nitrogen
TL;DR: In this paper, the validity of the author's two-temperature, chemical/kinetic model which the author has recently improved is assessed by comparing the calculated results with the existing experimental data for nitrogen in the dissociating and weakly ionizing regime produced behind a normal shock wave.