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Infrared diode laser absorption spectroscopic characterization of the free-stream in the f4 wind tunnel

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3 Author(s)
A. K. Mohamed ; ONERA, Chatillon, France ; J. -L. Verant ; J. Soutade

We report here on measurements performed with the infrared diode laser absorption spectroscopy (DLAS) in the hypersonic flows generated in the ONERA-F4 high enthalpy hot shot wind tunnel. Velocity and temperature characterization of the free stream of air or CO2 flows has been carried out in a series of calibration tests aiming to better understand real-gas/chemistry and pollution effects typical to this kind of wind tunnel. We present a few results of measurements in air flows which have been seeded with carbon dust to enhance pollution effects in the aim to better quantify these effects. We also,describe measurements on both CO and CO2 molecules for CO2 flows, which have a more complex chemistry than air flows

Published in:

Instrumentation in Aerospace Simulation Facilities, 2001. 19th International Congress on ICIASF 2001

Date of Conference:

Aug 2001