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Qualification of Ablative Materials in the Arc Jet Facility L2K.

Gülhan, A. (1995) Qualification of Ablative Materials in the Arc Jet Facility L2K. DLR-Interner Bericht. 39113-95C17, 58 S.

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Kurzfassung

Comparative tests on seven different ablative materials from companies in Europe and USA were performed at different pressures and heat flux rates in the arc jet facility L2K. A set of samples was exposed to a low pressure level at temperatures of 173 K and 373 K, in order to simulate the influence of the ageing process in space environments before the re-entry phase of the space vehicles. In total 42 tests were performed at 6 different test point conditions on 7 different samples. At high pressure and low heat flux test conditions compared to other samples the BPD, ALE and SEP samples showed the lowest erosion rates. At moderate and high heat flux rates and high pressure test conditions the lowest mass losses were measured on the ASP and SEP samples. The ASP and MMA samples had the lowest erosion rates at the low pressure test condition. The BPD, ALE and SEP samples showed the best performance regarding the test duration, which is proportional to the absorbed energy in the material. But in comparison with other samples the BPD and ALE samples had remarkably higher initial mass. Except an increase of the erosion rate of the MMA sample, the ageing process on the samples at the space environment conditions before hot tests did not influence the results.

Dokumentart:Berichtsreihe (DLR-Interner Bericht)
Zusätzliche Informationen: LIDO-Berichtsjahr=1995,
Titel:Qualification of Ablative Materials in the Arc Jet Facility L2K.
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Gülhan, A.NICHT SPEZIFIZIERT
Datum:1995
Seitenanzahl:58
Status:veröffentlicht
Stichwörter:Arc jet facility L2K, MSTP, ablative materials, erosion rate, long time behaviour.
HGF - Forschungsbereich:NICHT SPEZIFIZIERT
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W RP - Raumtransport
DLR - Schwerpunkt:NICHT SPEZIFIZIERT
DLR - Forschungsgebiet:W RP - Raumtransport
DLR - Teilgebiet (Projekt, Vorhaben):NICHT SPEZIFIZIERT
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Über- und Hyperschalltechnologien
Hinterlegt von: elib DLR-Beauftragter
Hinterlegt am:02 Apr 2006
Letzte Änderung:27 Apr 2009 05:29

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