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Just add bubbles for cooler future spacecraft

Written by  Wednesday, 02 February 2022 14:00
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Flow-boiling test on parabolic flights

From soft drinks to hot tubs, people add bubbles to liquids for many different reasons. ESA engineers think bubbles produced at the verge of boiling point could help control the temperature of spacecraft in a more efficient and compact way. The main unknown is how bubbles will behave in differing gravities down to weightlessness, so researchers boarded parabolic flight aircraft for testing.

Parabolic Zero-G aircraft takeoff
Parabolic Zero-G aircraft takeoff

Supported by ESA and Airbus Defence and Space, the Institute of Fluid Mechanics of Toulouse (IMFT) led by Prof. Catherine Colin designed a small compact loop for the study of flow boiling in weightlessness, fitting a circuit with a pump, a flow meter, preheaters, a condenser and associated tubing within the strictly limited volume available.

“This loop is planned to be installed aboard the ISS’s Columbus module, perhaps in the new version of the European Drawer Rack, EDR2,” explains Balazs Toth, ESA payload system engineer.


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