Abstract
OPS-SAT is a 3U CubeSat, designed for versatile use as an experimental platform for industry and universities, to demonstrate new operational concepts and prototype software in a real space environment. The satellite offers numerous payloads alongside the satellite bus, all of which might be used by an OPS-SAT experiment. The unpredictable nature of experiments with respect to the use of payload components raises certain unknowns, in particular concerning power consumption. As a result, the thermal behaviour throughout the satellite depends largely on which of the several on-board experiments and the associated payloads are switched on. OPS-SAT offers a variety of communication modules, such as a UHF transceiver, an S-Band transceiver, a Software Defined Radio (SDR), an X-Band transmitter and an optical receiver. The peak power consumption of OPS-SAT may exceed 30 watts during high power experiments. The S-Band transceiver consumes up to 10 watts during ground station passes and the so-called Satellite Experimental Processing Platform (SEPP), the heart of OPS-SAT experiments, consumes up to 8 watts constantly. This work provides an overview of the design and the thermal considerations on OPS-SAT and the results of the thermal vacuum (TVAC) test campaign. The results yield an average thermo-optical emissivity of 0.79 to 0.84 and the thermal power distribution on the spacecraft surface, and demonstrate the special case of the thermally isolated S-Band and X-Band patch antennas. Based on the derived results, predictions can be made about the thermal behaviour during various load cases and during periods with an active S-Band transmitter.
Originalsprache | englisch |
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Titel | CoBCom 2020 - International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications - Proceedings |
Seitenumfang | 7 |
ISBN (elektronisch) | 9781728174921 |
DOIs | |
Publikationsstatus | Elektronische Veröffentlichung vor Drucklegung. - 24 Aug. 2020 |
Veranstaltung | 3rd International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications: CoBCom 2020 - TU Graz, Virtuell, Graz, Österreich Dauer: 7 Juli 2020 → 10 Juli 2020 https://www.cobcom.tugraz.at/ |
Konferenz
Konferenz | 3rd International Conference on Broadband Communications for Next Generation Networks and Multimedia Applications |
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Kurztitel | CoBCom 2020 |
Land/Gebiet | Österreich |
Ort | Virtuell, Graz |
Zeitraum | 7/07/20 → 10/07/20 |
Internetadresse |
Schlagwörter
- OPS-SAT
- Cubesat
- Thermal Vacuum Test
ASJC Scopus subject areas
- Instrumentierung
- Hardware und Architektur
- Computernetzwerke und -kommunikation
- Medientechnik