The European Space Agency (ESA) is Europe’s gateway to space. Its mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world.
Find out more about space activities in our 23 Member States, and understand how ESA works together with their national agencies, institutions and organisations.
Exploring our Solar System and unlocking the secrets of the Universe
Go to topicProtecting life and infrastructure on Earth and in orbit
Go to topicUsing space to benefit citizens and meet future challenges on Earth
Go to topicMaking space accessible and developing the technologies for the future
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The temperature of YPSat is controlled by a passive thermal control system. This entails a Multi-Layer Isolation (MLI) around YPSat which balances the radiated and absorbed heat and gives a shiny look to the YPSat. It consists of nine layers, including copper, aluminium, Nomex and aluminised Mylar layers. A critical component which must stay well preserved during flight is the On-Board Computer (OBC). This component has an additional form of thermal protection, Docosane Phase Change Material (PCM). As the satellite’s internal energy increases, this substance melts and absorbs the unwanted thermal energy, allowing the OBC to adequately operate.