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Modeling Heat-Shield Erosion due to Dust Particle Impacts for Martian Entries

Palmer, Grant and Ching, Eric and Ihme, Matthias and Allofs, Dirk and Gülhan, Ali (2020) Modeling Heat-Shield Erosion due to Dust Particle Impacts for Martian Entries. Journal of Spacecraft and Rockets, 57 (5), pp. 857-875. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.A34744. ISSN 0022-4650.

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Official URL: https://doi.org/10.2514/1.A34744


Heat-shield design for spacecraft entering the atmosphere of Mars may be affected by the presence of atmospheric dust. Particle impacts with sufficient kinetic energy can cause spallation damage to the heat shield that must be estimated. The dust environment in terms of particle size distribution and number density can be inferred from ground-based or atmospheric observations at Mars. Using a Lagrangian approach, the particle trajectories through the shock layer can be computed using a set of coupled ordinary differential equations. The dust particles are small enough that noncontinuum effects must be accounted for when computing the drag coefficient and heat transfer to the particle surface. Surface damage correlations for impact crater diameter and penetration depth are presented for fused silica, AVCOAT, shuttle tiles, cork, and Norcoat® Liège. The cork and Norcoat Liège correlations are new and were developed in this study. The modeling equations presented in this paper are applied to compute the heat-shield erosion due to dust particle impacts on the ExoMars Schiaparelli entry capsule during dust storm conditions

Item URL in elib:https://elib.dlr.de/135702/
Document Type:Article
Title:Modeling Heat-Shield Erosion due to Dust Particle Impacts for Martian Entries
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Palmer, GrantAMA, Inc., Moffett Field, California 94035UNSPECIFIED
Ching, EricStanford University, Stanford, California, 94305UNSPECIFIED
Ihme, MatthiasStanford University, Stanford, California, 94305UNSPECIFIED
Allofs, DirkDirk.Allofs (at) dlr.dehttps://orcid.org/0000-0002-3776-1853
Gülhan, AliAli.Guelhan (at) dlr.dehttps://orcid.org/0000-0003-4905-5881
Date:3 August 2020
Journal or Publication Title:Journal of Spacecraft and Rockets
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.2514/1.A34744
Page Range:pp. 857-875
EditorsEmailEditor's ORCID iD
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
Keywords:Heat Shield, TPS, Thermal Protection System, Dust, Particles, Particle Impact, Martian Entry, Martian Entries
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):Experimentelle Methoden zur Raumfahrzeugauslegung (old)
Location: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonoc and Hypersonic Technology
Deposited By: Allofs, Dirk
Deposited On:06 Oct 2020 09:56
Last Modified:19 Feb 2021 17:11

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