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Experimental Flow Investigation of a Truncated Ideal Contour Nozzle

Stark, Ralf and Wagner, Bernd (2006) Experimental Flow Investigation of a Truncated Ideal Contour Nozzle. 42th Joint Propulsion Conference & Exhibit, 2006-07-09 - 2006-07-12, Sacramento, California (USA).



Various tests showed a significant side load peak for low nozzle pressure ratios during engine start-up and shut down phase. DLR Lampoldshausen carried out tests to examine the flow field in a truncated ideal contour nozzle for low NPR. For NPR<10 a convex and for NPR>20 a slight concave shaped Mach disk was found. Its curvature is limited to the centre and its height trend correlates with measured side loads. A concave shaped Mach disk being responsible for re-attached flows at low NPR could be excluded. The experiments were accompanied by numerical simulations of the flow field on various pressure ratios with regards on the shock pattern. The predicted Mach disk shape compares well with the experiments.

Item URL in elib:https://elib.dlr.de/49257/
Document Type:Conference or Workshop Item (Paper)
Title:Experimental Flow Investigation of a Truncated Ideal Contour Nozzle
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Wagner, BerndUniversity of StuttgartUNSPECIFIEDUNSPECIFIED
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Low Nozzle Pressure Ratio, Flow Separation, Re-attached Flow, Mach Disc Shape
Event Title:42th Joint Propulsion Conference & Exhibit
Event Location:Sacramento, California (USA)
Event Type:international Conference
Event Dates:2006-07-09 - 2006-07-12
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):W - Antriebsystemtechnik - Schubkammertechnologie und Hochdruckverbrennung (old)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Technologie
Deposited By: Stark, Dr.-Ing. Ralf
Deposited On:03 Jul 2007
Last Modified:31 Jul 2019 19:19

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