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Aerothermal characterization of the CALLISTO vehicle during descent

Ecker, Tobias and Ertl, Moritz and Klevanski, Josef and Krummen, Sven and Dumont, Etienne (2022) Aerothermal characterization of the CALLISTO vehicle during descent. In: 9 th EUROPEAN CONFERENCE FOR AERONAUTICS AND AEROSPACE SCIENCES (EUCASS). 9 th EUROPEAN CONFERENCE FOR AERONAUTICS AND AEROSPACE SCIENCES (EUCASS), 27.6-1.7.20222, Lille, Frankreich.

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Abstract

Aerothermal loads are a design driving factor during launcher development as the thermal loads directly in- fluence TPS design and trajectory. Recent developments in reusable launch vehicles (RLV) (e.g. SpaceX, Blue Origin) have added the dimension of refurbishment to the challenges the thermal design must con- sider. For disposable launchers the heat flux due to base heating during ascent needs to be considered for aft thermal protections system (TPS) and structural design. With the current European long term strategy[1] moving towards a reusable first stage - aerothermal loads may significantly change. The CAL- LISTO vehicle is a flight demonstrator for future reusable launcher stages and their technologies. The program involves three countries and their space organizations: CNES for France, DLR for Germany and JAXA for Japan. The first tests will be conducted in 2024 from CSG, Europe’s Spaceport. The challenge is to develop, all along the project, the skills of the partners. This know-how includes products and vehicle design, ground segment set up, and post-flight operations for vehicle recovery then reuse [2–5]. For the CALLISTO vehicle the highest heat fluxes are mainly due to heating from hot exhaust gases and heated air in proximity of the aft bay and on the exposed structures like legs and fins. The development of the plume extension is different for the considered re-entry, when compared to Falcon 9, or the studies presented in [6–8]. As shown by Dumont et al.[9] the plume remains relatively concentrated at the aft end of the vehi- cle due to high atmospheric pressure and only very low fractions of actual exhaust gas species enclosing the vehicle. In the current study we conducted computational fluid dynamics (CFD) studies in order to determine the aerothermal loads on the vehicle during descent through the landing approach corridor for both phase B and phase C aeroshapes. The database development for vehicle phase B and phase C are described in detail and analyzed for some of the most prominent interfaces. The final phase C database presented allows interpolation of interface heatfluxes for the entire flight domain (M, ρ) at varying angle of attack (between 180 deg and 160 deg). Further the sensitivity of the plume-vehicle interaction to angle of attack, chemistry, thrust vector deflection and engine throttling are investigated for a critical Mach number indicating further area of improvement for future databases.

Item URL in elib:https://elib.dlr.de/187034/
Document Type:Conference or Workshop Item (Speech)
Title:Aerothermal characterization of the CALLISTO vehicle during descent
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Ecker, TobiasTobias.Ecker (at) dlr.dehttps://orcid.org/0000-0001-7134-1185
Ertl, MoritzMoritz.Ertl (at) dlr.deUNSPECIFIED
Klevanski, JosefJosef.Klevanski (at) dlr.deUNSPECIFIED
Krummen, Svensven.krummen (at) dlr.dehttps://orcid.org/0000-0002-4126-688X
Dumont, EtienneEtienne.Dumont (at) dlr.dehttps://orcid.org/0000-0003-4618-0572
Date:June 2022
Journal or Publication Title:9 th EUROPEAN CONFERENCE FOR AERONAUTICS AND AEROSPACE SCIENCES (EUCASS)
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:CALLISTO, Aerothermodynamics, plume
Event Title:9 th EUROPEAN CONFERENCE FOR AERONAUTICS AND AEROSPACE SCIENCES (EUCASS)
Event Location:Lille, Frankreich
Event Type:international Conference
Event Dates:27.6-1.7.20222
Organizer:EUCASS association
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Project CALLISTO [SY], R - Reusable Space Systems and Propulsion Technology
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Spacecraft, GO
Institute for Aerodynamics and Flow Technology > Supersonoc and Hypersonic Technology
Institute of Space Systems > Systems Engineering and Project Office
Deposited By: Ecker, Tobias
Deposited On:20 Jul 2022 11:25
Last Modified:20 Jul 2022 11:25

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