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A Compact Tunable Diode Laser Absorption Spectrometer to Monitor CO2 at 2.7 µm Wavelength in Hypersonic Flows

Authors :
Jacques Soutade
Jean-Luc Vérant
Sebastien Paris
A.K. Mohamed
Raphael Vallon
Jason Meyers
Source :
Sensors (Basel, Switzerland), Sensors, Vol 10, Iss 6, Pp 6081-6091 (2010), Sensors; Volume 10; Issue 6; Pages: 6081-6091
Publication Year :
2010
Publisher :
MDPI AG, 2010.

Abstract

Since the beginning of the Mars planet exploration, the characterization of carbon dioxide hypersonic flows to simulate a spaceship’s Mars atmosphere entry conditions has been an important issue. We have developed a Tunable Diode Laser Absorption Spectrometer with a new room-temperature operating antimony-based distributed feedback laser (DFB) diode laser to characterize the velocity, the temperature and the density of such flows. This instrument has been tested during two measurement campaigns in a free piston tunnel cold hypersonic facility and in a high enthalpy arc jet wind tunnel. These tests also demonstrate the feasibility of mid-infrared fiber optics coupling of the spectrometer to a wind tunnel for integrated or local flow characterization with an optical probe placed in the flow.

Details

ISSN :
14248220
Volume :
10
Database :
OpenAIRE
Journal :
Sensors
Accession number :
edsair.doi.dedup.....ce6c386c3c95e84162d746cee63e2884
Full Text :
https://doi.org/10.3390/s100606081