Baturkin, Volodymyr und Feidelheimer, Vitali und Sasaki, Kaname und Mikulz, Eugen
(2020)
Regulative Characteristic of Methanol–Copper Heat Pipes for
Asteroid Lander “MASCOT”.
Journal of Heat Transfer, 142 (5), 051801-1.
American Society of Mechanical Engineers (ASME).
doi: 10.1115/1.4046443.
ISSN 0022-1481.
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Offizielle URL: https://asmedigitalcollection.asme.org/heattransfer/article-abstract/142/5/051801/1074765/Regulative-Characteristic-of-Methanol-Copper-Heat?redirectedFrom=fulltext
Kurzfassung
Variable conductance heat pipes (VCHPs) are the main part of the MASCOT (mobile
asteroid surface SCOuT) lander thermal control system (TCS). They provide variable
conductivity by utilizing the heat transfer limitations. This allows the heat pipes to act as
thermal switches without additional constructive elements, thus leveraging the simple
and compact design of conventional heat pipes. Two cylindrical methanol–copper heat
pipes with shell length of 0.482 m and 0.438 m and external diameter of 0.006 m, having
copper discrete metal fiber wick and copper shell were constructed and verified in the
temperature range between -75 and +60 C. The purpose is to apply this design into the
MASCOT TCS and to investigate the heat pipes’ regulative characteristics and heat
transfer limitations. VCHPs show a change of thermal resistivity from 70 K/W at a heat
sink temperature of -60 C, to 0.8 K/W at a heat sink temperature of +60 C; with an
obtained maximal heat transfer rate of 5 W and 16 W, respectively. It is found that the
switching effect of the heat pipes is governed by the sonic velocity limitation, the saturation vapor pressure of the working fluid, and the maximal capillary pressure of the wick.
The operation of the heat pipes as the part of the TCS has confirmed their variable thermal properties
elib-URL des Eintrags: | https://elib.dlr.de/135041/ |
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Dokumentart: | Zeitschriftenbeitrag |
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Titel: | Regulative Characteristic of Methanol–Copper Heat Pipes for
Asteroid Lander “MASCOT” |
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Autoren: | |
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Datum: | 13 Mai 2020 |
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Erschienen in: | Journal of Heat Transfer |
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Referierte Publikation: | Ja |
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Open Access: | Ja |
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Gold Open Access: | Nein |
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In SCOPUS: | Ja |
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In ISI Web of Science: | Ja |
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Band: | 142 |
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DOI: | 10.1115/1.4046443 |
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Seitenbereich: | 051801-1 |
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Herausgeber: | Herausgeber | Institution und/oder E-Mail-Adresse der Herausgeber | Herausgeber-ORCID-iD | ORCID Put Code |
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Portonovo, S. Ayyaswamy | The Americal Society of Mechanical Engineers. ASME Digital collection | NICHT SPEZIFIZIERT | NICHT SPEZIFIZIERT |
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Verlag: | American Society of Mechanical Engineers (ASME) |
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Name der Reihe: | ASME. Digital collection |
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ISSN: | 0022-1481 |
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Status: | veröffentlicht |
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Stichwörter: | heat pipes, cooper–methanol, metal fiber wick, heat transfer limitations,variable conductance |
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HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr |
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HGF - Programm: | Raumfahrt |
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HGF - Programmthema: | Technik für Raumfahrtsysteme |
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DLR - Schwerpunkt: | Raumfahrt |
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DLR - Forschungsgebiet: | R SY - Technik für Raumfahrtsysteme |
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DLR - Teilgebiet (Projekt, Vorhaben): | R - Projekt Mascot (Bus), Vorhaben Carbotherm (alt) |
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Standort: |
Bremen
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Institute & Einrichtungen: | Institut für Raumfahrtsysteme > Mechanik und Thermalsysteme |
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Hinterlegt von: |
Baturkin, Volodymyr
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Hinterlegt am: | 26 Mai 2020 14:29 |
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Letzte Änderung: | 28 Mär 2023 23:56 |
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Regulative Characteristic of Methanol–Copper Heat Pipes for
Asteroid Lander “MASCOT”. (deposited 26 Mai 2020 14:29)
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