The Sound-Field Produced by Clustered Rockets During Start-Up

The vibro-acoustic loads produced by a cluster of two large area ratio thrust optimized parabolic contour nozzles are studied over a range of pressure ratios encompassing free-shock separated flow, restricted shock separated flow, and the end-effects-regime. The rocket plume is visualized using a re...

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Bibliographic Details
Published inWhither Turbulence and Big Data in the 21st Century? pp. 133 - 145
Main Authors Tinney, C. E., Canchero, A., Rojo, R., Mack, G., Murray, N. E., Ruf, J. H.
Format Book Chapter
LanguageEnglish
Published Cham Springer International Publishing
Subjects
Interrogation Area
Mach Disk
Nozzle Pressure Ratio
RANS Model
Shock Cell
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Summary:The vibro-acoustic loads produced by a cluster of two large area ratio thrust optimized parabolic contour nozzles are studied over a range of pressure ratios encompassing free-shock separated flow, restricted shock separated flow, and the end-effects-regime. The rocket plume is visualized using a retroreflective shadowgraphy system while an experimentally validated RANS model provides insight into the internal flow and shock structure patterns. Pressure loads that form on the base of the vehicle (behind the nozzles) are then measured using a eighth-inch microphone, as most of these loads are caused by high intensity sound waves produced by the rocket nozzle flow. The objective of the study is to provide a direct link between the sources of most intense vibro-acoustic loads that form during the startup of high area ratio rocket nozzle clusters.
ISBN:9783319412153
3319412159
DOI:10.1007/978-3-319-41217-7_8