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Rocket Nozzle Cold-Gas Flow Velocity Measurements Using Laser-Induced Gratings

Hemmerling, B. and Neracher, M. and Kozlov, D. and Kwan, W. and Klimenko, D. and Clauss, W. and Oschwald, M. (2002) Rocket Nozzle Cold-Gas Flow Velocity Measurements Using Laser-Induced Gratings. Journal of Raman Spectroscopy, 33, pp. 912-918.

Full text not available from this repository.

Abstract

The heterodyne detection laser-induced electrostrictive gratings technique was employed for characterization of a flow velocities field in the plume of a rocket nozzle. The intention of the work was to validate CFD calculations, that predict the appearance of a recirculation zone inside the flow at a certain ratio of nozzle and ambient pressures. This zone co-exists with the side loads to the nozzle wall that were observed experimentally as transient forces during the start-up or the shut-down of the thrust chamber. Measurements were performed in cold-gas flows from a subscale thrust-optimized, parabolic nozzle. Nitrogen at stagnation pressures up to 40 bar was supplied to the nozzle. The experimental results clearly proved the existence of a recirculation zone in the flow field, in a reasonable agreement with the predictions of CFD calculations.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2002,
Title:Rocket Nozzle Cold-Gas Flow Velocity Measurements Using Laser-Induced Gratings
Authors:
AuthorsInstitution or Email of Authors
Hemmerling, B.Paul Scherrer Institute, Villingen
Neracher, M.Paul Scherrer Institute, Villingen
Kozlov, D.General Physics Institute, RAS, Moscow
Kwan, W.UNSPECIFIED
Klimenko, D.UNSPECIFIED
Clauss, W.UNSPECIFIED
Oschwald, M.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. 912-918
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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