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Aerothermal Measurements from the ExoMars Schiaparelli Capsule Entry

Gülhan, Ali and Thiele, Thomas and Siebe, Frank and Kronen, Rolf and Schleutker, Thorn (2018) Aerothermal Measurements from the ExoMars Schiaparelli Capsule Entry. Journal of Spacecraft and Rockets. American Institute of Aeronautics and Astronautics (AIAA). DOI: 10.2514/1.A34228 ISSN 0022-4650

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Official URL: https://arc.aiaa.org/doi/10.2514/1.A34228

Abstract

The instrumentation package COMARS+ was developed to measure aerothermal parameters on the back cover of the ExoMars Schiaparelli lander during Martian entry. The aerothermal sensors called Combined Aerothermal and Radiometer Sensor (COMARS) combine four discrete sensors, measuring static pressure, total heat flux, temperature, and radiative heat flux. After passing all acceptance tests, the Schiaparelli capsule was launched ontop of the Proton launcher on March 14, 2016. All COMARS+ sensors operated nominally during the complete entry phase. But the complete data package is not available due to ananomaly that ledt o the failure of Schiaparelli shortly before landing. Nevertheless, a subset of the COMARS+ flight data was transmitted real-time during the entry and was received by the ExoMars 2016 orbiter, with the exception of the plasma blackout phase. The radiative heat flux on the back cover close to the vehicle shoulder was measured successfully for the first time on a Mars entry vehicle. The measured maximum radiative contribution was 61% of the total heat flux at the first measurement point after the blackout phase and 33% for the next measured trajectory point 10 s later. These measurements confirm recent findings that radiative heating can be a significant portion of total heating on the back cover during Mars entry. The maximum back cover total heat flux rate was measured at approximately 9% of the calculated stagnation point heat flux on the front cover. All measured heat fluxes on the back cover were below the levels that were used to design the thermal protection system.

Item URL in elib:https://elib.dlr.de/121754/
Document Type:Article
Title:Aerothermal Measurements from the ExoMars Schiaparelli Capsule Entry
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gülhan, AliAli.Guelhan (at) dlr.deUNSPECIFIED
Thiele, ThomasThomas.Thiele (at) dlr.deUNSPECIFIED
Siebe, FrankFrank.Siebe (at) dlr.deUNSPECIFIED
Kronen, RolfRolf.Kronen (at) dlr.deUNSPECIFIED
Schleutker, ThornThorn.Schleutker (at) dlr.dehttps://orcid.org/0000-0002-1833-2850
Date:26 June 2018
Journal or Publication Title:Journal of Spacecraft and Rockets
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.2514/1.A34228
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0022-4650
Status:Published
Keywords:ExoMars, atmospheric entry, entry capsule, lander, heat flux
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt ExoMars
Location: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonoc and Hypersonic Technology
Deposited By: Schleutker, Thorn
Deposited On:17 Oct 2018 12:34
Last Modified:23 Feb 2019 00:22

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