In 2014 KTH Royal Institute of Technology initiated a space technology and research center, KTH Space Centre. MIST (MIniature Student saTellite) is the rst student project conducted at KTH Space Centre and also the rst student satellite from KTH with a predicted launch in 2017. This report includes the thermal analysis and control of the spacecraft MIST. One of the main systems in a spacecraft is the thermal control system. In order for the payloads and subsystems to withstand the harsh thermal environment in space a thorough thermal analysis is needed. In this project the thermal model has been built and thermal control design of the spacecraft has been started. As a start a preliminary thermal analysis was performed where the spacecraft was approximated as a sphere in order to get some estimates on the temperature in orbit due to the space environment. Furthermore the temperature decrease in eclipse was studied. Since most of the spacecraft will consist of Printed Circuit Boards (PCB) the thermal behavior of PCB has been investigated and as a part of this investigation a thermal vaccum chamber test was performed where the conductance from a PCB through the mounting interface to a metal plate was measured. This report will also guide the reader through the model built and assumptions made. As a part of the thermal control, Multi Layer Insulation (MLI) has been studied and modeled in two di erent ways which have been compared with each other in order to know the level of detail needed for the MLI model. Last but not least the design of the thermal control system has been started where some payloads have been wrapped in MLI and thermal contact conductance coecient has been changed in order to meet the thermal requirements of the payloads and subsystems.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:kth-170434 |
| Date | January 2015 |
| Creators | Berggren, Andreas |
| Publisher | KTH, Rymd- och plasmafysik |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | EES Examensarbete / Master Thesis ; XR-EE-SPP 2015:002 |
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