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A Numerical Study on the Thermal Loads During a Supersonic Rocket Retro-Propulsion Maneuver

Ecker, Tobias and Karl, Sebastian and Dumont, Etienne and Stappert, Sven and Krause, Daniel (2017) A Numerical Study on the Thermal Loads During a Supersonic Rocket Retro-Propulsion Maneuver. In: 53nd AIAA/SAE/ASEE Joint Propulsion Conference, 2016. 53rd AIAA/SAE/ASEE Joint Propulsion Conference, 10.-12. Juni 2017, Atlanta, USA. DOI: 10.2514/6.2017-4878

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Official URL: https://doi.org/10.2514/6.2017-4878

Abstract

Return and vertical landing oft the first launch stage is a concept enabling reusable launch systems and has been successfully applied by SpaceX with the Falcon 9. The Falcon 9 first stage descends by two or three phases of retro-propulsion. Especially the supersonic retro-propulsion phase, using three of its nine engines, is of interest as it exhibits conditions close to Mars reentry. During retro-Propulsion the first stage is partially submerged in the hot exhaust plume. In this study a generic model based on the Falcon9's features and dimensions is used to perform a numerical Investigation of the plume-vehicleinteraction. Using Large eddy Simulation (LES) and Reynolds-A veraged-Navier-Stokes equations (RANS) based computation al methods the flow field is characterized at different trajectory points during retro-propulsion. Based on several steady RANS calculations, an aerothermal data base is created and coupled into a simple finite element structural heating model of the casing. Results show, that despite the high gas temperatures, the low gas density leads to amanageable heat flux and only moderate temperature increase on the cylindrical walls when using conventional Aluminum materials.

Item URL in elib:https://elib.dlr.de/111762/
Document Type:Conference or Workshop Item (Speech)
Additional Information:http://propulsionenergy.aiaa.org/; https://arc.aiaa.org/doi/pdfplus/10.2514/6.2017-4878
Title:A Numerical Study on the Thermal Loads During a Supersonic Rocket Retro-Propulsion Maneuver
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ecker, TobiasTobias.Ecker (at) dlr.deUNSPECIFIED
Karl, Sebastiansebastian.karl (at) dlr.deUNSPECIFIED
Dumont, Etienneetienne.dumont (at) dlr.dehttps://orcid.org/0000-0003-4618-0572
Stappert, Svensven.stappert (at) dlr.deUNSPECIFIED
Krause, DanielDaniel.Krause (at) dlr.dehttps://orcid.org/0000-0001-5315-241X
Date:2017
Journal or Publication Title:53nd AIAA/SAE/ASEE Joint Propulsion Conference, 2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2017-4878
Status:Published
Keywords:Retropropulsion, Plume, Reentry, Trajectory analysis
Event Title:53rd AIAA/SAE/ASEE Joint Propulsion Conference
Event Location:Atlanta, USA
Event Type:international Conference
Event Dates:10.-12. Juni 2017
Organizer:AIAA Propulsion and Energy Forum
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Anlagen u. Messtechnik
Location: Braunschweig , Bremen , Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Spacecraft, GO
Institute of Space Systems > Space Launcher Systems Analysis
Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Bachmann, Barbara
Deposited On:02 Aug 2017 13:58
Last Modified:06 Feb 2018 12:25

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