Design, development and verification of the eROSITA thermal control system:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
2012
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| Schlagworte: | |
| Online-Zugang: | Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120924-1110726-0-7 Inhaltsverzeichnis |
| Beschreibung: | XVII, 195 S. Ill., graph. Darst. |
Internformat
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Datensatz im Suchindex
| _version_ | 1804150148657315840 |
|---|---|
| adam_text | IMAGE 1
CONTENTS
LIST OF FIGURES XI
LIST OF TABLES XV
ACRONYMS XVII
1 EROSITA ON SPEKTRUM-RONTGEN-GAMMA 1
1.1 SCIENCE DRIVERS 2
1.2 INSTRUMENT DESCRIPTION 4
1.3 BOUNDARY CONDITIONS FOR THE THERMAL CONTROL SYSTEM 6
2 THE EROSITA CAMERA THERMAL CONTROL 9
2.1 REQUIREMENTS 9
2.2 THERMAL ENVIRONMENT 11
2.3 DESIGN 12
3 HEAT PIPES 21
3.1 UNDERLYING PHYSICAL CONCEPTS 22
3.1.1 FUNCTIONAL PRINCIPLE 22
3.1.2 HEAT TRANSFER COEFFICIENTS AT EVAPORATOR AND CONDENSER 24
3.1.3 CAPILLARY LIMIT AND HEAT TRANSPORT FACTOR 28
3.1.4 FURTHER HEAT PIPE LIMITATIONS 37
3.1.5 VARIABLE CONDUCTANCE HEAT PIPES 42
3.2 TECHNICAL SOLUTION 48
3.2.1 CAMERA AND RING HEAT PIPES 50
3.2.2 SWITCHABLE VARIABLE CONDUCTANCE HEAT PIPES 54
3.3 HEAT PIPE PERFORMANCE TEST UNDER MICROGRAVITY 58
3.3.1 TEST SET-UP 58
3.3.2 TEST CAMPAIGN 63
3.3.3 RESULTS 65
IX
HTTP://D-NB.INFO/1035623315
IMAGE 2
CONTENTS
3.4 CAMERA AND RING HEAT PIPE EQUILIBRIUM PERFORMANCE 74
3.4.1 CAMERA HEAT PIPE 74
3.4.2 RING HEAT PIPE 82
3.5 OPTIMISATION OF THE SWITCHABLE VARIABLE CONDUCTANCE HEAT PIPES . . .
. 84 3.5.1 TEST SET-UP 85
3.5.2 TEST RESULTS 85
4 THERMAL DESIGN AND ANALYSIS O F THE CAMERA COOLING SYSTEM 95
4.1 CAMERA ASSEMBLY THERMAL MODEL 96
4.2 HEAT PIPE THERMAL MODEL 103
4.3 CAMERA COOLING THERMAL BALANCE TEST 105
4.3.1 TEST SET-UP 106
4.3.2 TEST CAMPAIGN 110
4.3.3 THERMAL MODEL 110
4.3.4 TEST RESULTS 113
4.3.5 ADAPTION OF THE THERMAL MODEL 117
5 EROSITA THERMAL CONTROL SYSTEM 123
5.1 MULTILAYER INSULATION 124
5.2 MIRROR ASSEMBLY 134
5.3 CAMERA ELECTRONICS 139
5.4 PREDICTIONS FOR THE EROSITA THERMAL CONTROL SYSTEM PERFORMANCE . . .
142
6 ORBIT SCENARIOS 149
6.1 THE LAGRANGE POINT 2 149
6.2 SPACECRAFT POINTING 150
6.3 EXPOSURE 152
6.4 THE LOW EARTH ORBIT 155
7 SUMMARY AND OUTLOOK 157
A HEAT TRANSPORT 161
A.L FROM FOURIER S LAW TO THE HEAT EQUATION - CONDUCTIVE HEAT TRANSPORT
. . 161 A.2 CONVECTION 165
A.3 RADIATIVE HEAT EXCHANGE 165
B COMPUTATIONAL METHODS FOR SOLVING DIFFERENTIAL EQUATIONS 177
C THERMAL SOFTWARE 181
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| spelling | Fürmetz, Maria Verfasser aut Design, development and verification of the eROSITA thermal control system Maria Regina Fürmetz 2012 XVII, 195 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Techn. Univ., Diss., 2012 Kühlsystem (DE-588)4139629-7 gnd rswk-swf eROSITA (DE-588)1164103156 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content eROSITA (DE-588)1164103156 s Kühlsystem (DE-588)4139629-7 s DE-604 Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:91-diss-20120924-1110726-0-7 http://mediatum.ub.tum.de/node?id=1110726 Verlag kostenfrei Volltext https://nbn-resolving.org/urn:nbn:de:bvb:91-diss-20120924-1110726-0-7 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025787713&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Fürmetz, Maria Design, development and verification of the eROSITA thermal control system Kühlsystem (DE-588)4139629-7 gnd eROSITA (DE-588)1164103156 gnd |
| subject_GND | (DE-588)4139629-7 (DE-588)1164103156 (DE-588)4113937-9 |
| title | Design, development and verification of the eROSITA thermal control system |
| title_auth | Design, development and verification of the eROSITA thermal control system |
| title_exact_search | Design, development and verification of the eROSITA thermal control system |
| title_full | Design, development and verification of the eROSITA thermal control system Maria Regina Fürmetz |
| title_fullStr | Design, development and verification of the eROSITA thermal control system Maria Regina Fürmetz |
| title_full_unstemmed | Design, development and verification of the eROSITA thermal control system Maria Regina Fürmetz |
| title_short | Design, development and verification of the eROSITA thermal control system |
| title_sort | design development and verification of the erosita thermal control system |
| topic | Kühlsystem (DE-588)4139629-7 gnd eROSITA (DE-588)1164103156 gnd |
| topic_facet | Kühlsystem eROSITA Hochschulschrift |
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