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Jack, Sebastian und Oschwald, Michael und Eggers, Thino (2023) Mechanisms Contributing to the Dynamic Stability of a Flexible Subscale Rocket Nozzle. Journal of Propulsion and Power, Seiten 1-11. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.B39178. ISSN 0748-4658. (im Druck)
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Offizielle URL: https://dx.doi.org/10.2514/1.B39178
Kurzfassung
Forced motion simulations of an overexpanded subscale rocket nozzle were performed to investigate the transient mechanisms that lead to self-exciting fluid–structure interaction as observed in preceded studies. The pressure response to the deformation could be separated into two regions upstream and downstream the flow separation position. Within these regions the transient part of the pressure was analyzed using fast Fourier transform based on the method of generalized aerodynamic forces. The amplitude spectrum and phase shift distribution of the pressure response could be explained by superposition of three independently acting mechanisms: the inclination effect, the existence of a moving axial pressure wave, and intrinsic oscillations caused by the turbulence created by the strong shock system. Simplified simulation setups using a bent flat plate and a detailed unsteady simulation of the flow in the undeformed nozzle were analyzed to validate these assumptions.
| elib-URL des Eintrags: | https://elib.dlr.de/199017/ | ||||||||||||||||
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| Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||
| Titel: | Mechanisms Contributing to the Dynamic Stability of a Flexible Subscale Rocket Nozzle | ||||||||||||||||
| Autoren: |
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| Datum: | 5 September 2023 | ||||||||||||||||
| Erschienen in: | Journal of Propulsion and Power | ||||||||||||||||
| Referierte Publikation: | Ja | ||||||||||||||||
| Open Access: | Ja | ||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||
| In SCOPUS: | Ja | ||||||||||||||||
| In ISI Web of Science: | Ja | ||||||||||||||||
| DOI: | 10.2514/1.B39178 | ||||||||||||||||
| Seitenbereich: | Seiten 1-11 | ||||||||||||||||
| Verlag: | American Institute of Aeronautics and Astronautics (AIAA) | ||||||||||||||||
| ISSN: | 0748-4658 | ||||||||||||||||
| Status: | im Druck | ||||||||||||||||
| Stichwörter: | Rocket Engine Nozzle, Fluid-Structure Interaction, Computational Fluid Dynamics, TAU, Unsteady Reynolds Averaged Navier Stokes | ||||||||||||||||
| HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||
| HGF - Programm: | Raumfahrt | ||||||||||||||||
| HGF - Programmthema: | Raumtransport | ||||||||||||||||
| DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||
| DLR - Forschungsgebiet: | R RP - Raumtransport | ||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | R - Projekt TAUROS (TAU for Rocket Thrust Chamber Simulation), R - Projekt Amadeus | ||||||||||||||||
| Standort: | Braunschweig | ||||||||||||||||
| Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Raumfahrzeuge, BS Institut für Raumfahrtantriebe > Raketenantriebstechnologie | ||||||||||||||||
| Hinterlegt von: | Jack, Sebastian | ||||||||||||||||
| Hinterlegt am: | 30 Nov 2023 15:10 | ||||||||||||||||
| Letzte Änderung: | 30 Nov 2023 15:10 |
Verfügbare Versionen dieses Eintrags
- Mechanisms Contributing to the Dynamic Stability of a Flexible Subscale Rocket Nozzle. (deposited 30 Nov 2023 15:10) [Gegenwärtig angezeigt]
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