Feature Story
Harvest of innovations at Geneva's Invention Expo
Prof. Yung Kai-leung (second from left) and his research team 

Prof. Yung Kai-leung (second from left) and his research team

Grand Prize and Gold Medal with Jury's Commendation Soil preparation system

Principal Investigator: Prof. Yung Kai-leung, Department of Industrial and Systems Engineering

Developed for taking soil samples during the aborted "Phobos-Grunt mission to the Martian moon Phobos", the PolyU designed and built "Soil Preparation System" (SOPSYS) will be redeployed in upcoming Sino-Russian missions to explore "Phobos".

The soil preparation system for grinding and sifting Phobos rocks  

The soil preparation system for grinding and sifting Phobos rocks

"SOPSYS", compact and lightweight at under 400 grams, has enormous potential for applications in a range of environments. It grinds and sifts rocks to sub-millimetre size and can function in extreme or adverse conditions including those with large daily temperature differences, low gravity, and vacuums, and with high levels of dust and cosmic radiation. It can also cope with various unforeseen hazards such as jamming due to excessively hard rock fragments.

Supporting in-situ analysis, the system promises to be part of a crucial step in understanding the evolution of the universe. Some of the technologies developed for "SOPSYS" were applied in the "Camera Pointing System", the pioneering space engineering mechanism developed at PolyU for China's successful Chang'e-3 lunar mission.