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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).
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Abstract
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/ | ||||||||||||
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| Document Type: | Conference or Workshop Item (Paper) | ||||||||||||
| Title: | Experimental Flow Investigation of a Truncated Ideal Contour Nozzle | ||||||||||||
| Authors: |
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| Date: | 2006 | ||||||||||||
| Refereed publication: | No | ||||||||||||
| Open Access: | Yes | ||||||||||||
| Gold Open Access: | No | ||||||||||||
| In SCOPUS: | No | ||||||||||||
| In ISI Web of Science: | No | ||||||||||||
| Status: | Published | ||||||||||||
| 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 Start Date: | 9 July 2006 | ||||||||||||
| Event End Date: | 12 July 2006 | ||||||||||||
| 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: | 24 Apr 2024 19:11 |
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