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Design and Preliminary Numerical Analysis of a Flexible Structure for a Cold Gas Nozzle Experiment

Jack, Sebastian and Stark, Ralf (2022) Design and Preliminary Numerical Analysis of a Flexible Structure for a Cold Gas Nozzle Experiment. 2nd International Conference on Flight Vehicles, Aerothermodynamics and Re-entry Missions and Engineering, 19.-23. Juni 2022, Heilbronn, Deutschland.

Full text not available from this repository.

Abstract

An experimental setup for the investigation of fluid-structure interaction in rocket engine nozzles is proposed. The configuration consists of a flexible nozzle and a strap mechanism to apply a defined initial deformation. After release of the strap the damping characteristics of the system will be measured and compared to numerical simulations for validation. Finite element simulations of the structure are used for its preliminary design with focus on the strain safety margins and the shape of the deformation caused by the strap. Unsteady coupled simulations of the strap actuation and release sequence are presented from which the damping characteristics of the aeroelastic system are derived. The local contribution to the systems global dynamic stability is qualitatively analyzed. The described nozzle model was manufactured, the strap mechanism built and the setup will be used to validate the numerical simulations in a planned experimental campaign.

Item URL in elib:https://elib.dlr.de/190178/
Document Type:Conference or Workshop Item (Speech)
Title:Design and Preliminary Numerical Analysis of a Flexible Structure for a Cold Gas Nozzle Experiment
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Jack, SebastianUNSPECIFIEDhttps://orcid.org/0000-0002-1554-6503UNSPECIFIED
Stark, RalfUNSPECIFIEDhttps://orcid.org/0000-0003-1923-1901UNSPECIFIED
Date:June 2022
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Nozzle, FSI, CFD, CSM, experiment, dynamic stability
Event Title:2nd International Conference on Flight Vehicles, Aerothermodynamics and Re-entry Missions and Engineering
Event Location:Heilbronn, Deutschland
Event Type:international Conference
Event Dates:19.-23. Juni 2022
Organizer:European Space Agency
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Project Amadeus
Location: Braunschweig , Lampoldshausen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Spacecraft, BS
Institute of Space Propulsion > Rocket Propulsion Technology
Deposited By: Jack, Sebastian
Deposited On:29 Nov 2022 07:39
Last Modified:29 Nov 2022 07:39

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