CARS Temperature Mapping in a Cryogenic LOX-H2 Rocket Combustion Chamber under Supercritical Conditions
Klimenko, D. and Clauss, W. and Oschwald, M. and Smith, J. and Mayer, W. (2002) CARS Temperature Mapping in a Cryogenic LOX-H2 Rocket Combustion Chamber under Supercritical Conditions. Journal of Raman Spectroscopy, 33, pp. 900-905.
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Coherent anti-Stokes Raman spectroscopy (CARS) was applied for temperature measurements in a highöpressure cryogenic liquid oxygen-hydrogen rocket model combustor. The combustor was operated at 6 MPa, above the supercritical pressure of the propellants. H2 and H2O molecules were probed simultaneously using a dual-boradband CARS setup and degenerate CARS setup with a single dye laser. The diagnostic set-up at the test site was adapted to the high level of cibrations exprienced during tests by several measures: the laser system was positioned in a separate room next to the test cell, a heavy-duty tri-axial translation stage for positioning the beam guiding optics and focusing lenses in the test cell was specially designed to be insensitive to vibrational excitation. The combustor was operated at two hydrogen injection temperatures, 65 and 117 K. In the low hydrogen temperature tests no CARS signal could be obtained. At a higher hydrogen temperature (-117 K), successful temperature mapping of the flame was performed at two cross-sections, 50 and 80 mm downstream of the injector. Bimodal temperature distributions were observed at the 80 mm position, indicating strong flame and flow oscillations.
|Title:||CARS Temperature Mapping in a Cryogenic LOX-H2 Rocket Combustion Chamber under Supercritical Conditions|
|Journal or Publication Title:||Journal of Raman Spectroscopy|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 900-905|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W RP - Raumtransport|
|DLR - Research area:||Space|
|DLR - Program:||W RP - Raumtransport|
|DLR - Research theme (Project):||E -- no assignement|
|Institutes and Institutions:||Institute of Space Propulsion|
|Deposited By:||Monika Lohmiller|
|Deposited On:||16 Sep 2005|
|Last Modified:||06 Jan 2010 14:00|
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