Acoustic characterization of sub-scale rocket nozzles

Donald, B, Baars, W, Tinney, C and Ruf, J 2012, 'Acoustic characterization of sub-scale rocket nozzles', in Proceedings of the 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition (AIAA 2012), Nashville, Tennessee, United States, 9-12 January 2012, pp. 7933-7946.


Document type: Conference Paper
Collection: Conference Papers

Title Acoustic characterization of sub-scale rocket nozzles
Author(s) Donald, B
Baars, W
Tinney, C
Ruf, J
Year 2012
Conference name AIAA 2012
Conference location Nashville, Tennessee, United States
Conference dates 9-12 January 2012
Proceedings title Proceedings of the 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition (AIAA 2012)
Publisher American Institute of Aeronautics and Astronautics
Place of publication United States
Start page 7933
End page 7946
Total pages 14
Abstract During launch, space vehicles are subject to violent vibro-acoustic loads caused by the intense sound pressure levels and transient side-loads produced during rocket engine ignition. A recent study conducted at The University of Texas at Austin has focused on characterizing the internal flow and acoustic signature of a thrust-optimized parabolic (TOP) and a truncated ideal contour (TIC) nozzle test article in order to develop a detailed understanding of the mechanisms responsible for producing main engine ignition noise. The studies are conducted for both transient and fixed nozzle pressure ratio (NPR) conditions. The former provides a more realistic representation of the full scale environment, while the latter allows for a statistical characterization of the various sources of main engine ignition (MEI) noise. Time-frequency analysis is performed on transient startup data.
Subjects Aerodynamics (excl. Hypersonic Aerodynamics)
DOI - identifier 10.2514/6.2012-544
Copyright notice Copyright © 2012 by the Authors.
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