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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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Abstract

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.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2002,
Title:CARS Temperature Mapping in a Cryogenic LOX-H2 Rocket Combustion Chamber under Supercritical Conditions
Authors:
AuthorsInstitution or Email of Authors
Klimenko, D.UNSPECIFIED
Clauss, W.UNSPECIFIED
Oschwald, M.UNSPECIFIED
Smith, J.UNSPECIFIED
Mayer, W.UNSPECIFIED
Date:2002
Journal or Publication Title:Journal of Raman Spectroscopy
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:33
Page Range:pp. 900-905
Status:Published
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):E -- no assignement
Location: Lampoldshausen
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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