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Design of Thermal Control System for the Spacecraft MIST
KTH, School of Electrical Engineering (EES), Space and Plasma Physics.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

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.

Place, publisher, year, edition, pages
2015. , 126 p.
EES Examensarbete / Master Thesis, XR-EE-SPP 2015:002
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-170434OAI: diva2:831763
Educational program
Master of Science - Aerospace Engineering
Available from: 2015-06-30 Created: 2015-06-30 Last updated: 2015-06-30Bibliographically approved

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