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10 June, 2019 - 13:41 By Kate Sweeney

Cambridge rocket science: Graphene to enable future space exploration

Graphene Flagship

Cambridge researchers have launched a campaign of zero-gravity parabolic flights using the wonder material graphene to test novel thermal management graphene devices for future space applications.

The unique properties of graphene can significantly improve their performance, says the team.

The work is a collaboration between the Graphene Flagship partners – the Cambridge Graphene Centre, the Université Libre de Bruxelles, the National Research Council of Italy and industrial partner, Leonardo. 

Two successful campaigns completed in 2017 showed strong evidence that graphene’s thermal properties can improve the efficiency of loop heat pipes. This third zero-gravity campaign will test an advanced device at higher technology readiness level, as a further step towards space applications.

Thermal management is essential for satellites and other equipment to perform correctly in space. The difference in temperature between two sides of a satellite, for instance the sides facing towards and away from the sun, can vary by over 200 degrees Celsius. 

Removing unwanted heat and avoiding equipment failure requires the use of a loop heat pipe to dissipate excess heat.

Loop heat pipes cool electronic devices and instruments by using the heat they generate to evaporate a fluid inside a wick. The wick is traditionally made of porous metal. In the case of this experiment, the wick will be coated in graphene to improve the heat transfer between the electronic units and the fluid. 

Professor Andrea Ferrari, Science & Technology officer of the Graphene Flagship and chair of its Management Panel, said: “This third parabolic flights campaign in two years is a testimony of the pace of development of the new graphene-based devices. 

“The aim is to get these included in satellites or in the International Space Station in the next few years. The further tests of graphene inks, to be performed in the sounding rocket in June, will further our understanding of their behaviour in microgravity conditions.”  

Carlo Iorio, senior researcher at Université Libre de Bruxelles and co-ordinator of the zero-gravity experiments added: “This new parabolic flight experiment is a further step in order to test graphene in space. In June, the Graphene Flagship will test graphene in a sounding rocket campaign, which will be held in Kiruna in the North of Sweden.

“The rocket campaign will provide our researchers with six minutes of micro gravity. During this time, we will test fundamental aspects of graphene solutions, the same used to prepare the thermal management devices, essential tools for the future of space exploitation.”

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