Unforeseen problems continue to bug the Phoenix Mars Lander, but engineers are hopeful obstacles can still be overcome. A robotic scoop finally deployed, capturing Martian polar soil, but the material clumped on a screen and only a few particles passed into analysis equipment.
The team operating the Lander developed a technique for sprinkling soil from a tilted scoop while it is being vibrated by a motorized rasp. Previously, the soil was just dumped. The rasp had been designed to scoop up a subsurface sample of ice, a mission that is still planned.
"This is good news," says Ray Arvidson of Washington University in St. Louis, lead scientist for the robotic arm. According to Arvidson, Martian soil clumps because of extremely fine particles filling in gaps between coarser, sand-size particles, perhaps with a material that cements particles together. Another strategy: Future soil samples may be chopped and scraped with blades on the scoop.
With erupting concern over police brutality, law enforcement agencies are turning to body-worn cameras to collect evidence and protect police and suspects. But how do they work? And are they even really effective?
A half century ago, cars were still built by people, not robots. Even on some of the country’s longest assembly lines, human workers installed windows, doors, hoods, engines, windshields, and batteries, with no robotic aid.
DuPont's Hytrel elastomer long used in automotive applications has been used to improve the way marine mooring lines are connected to things like fish farms, oil & gas installations, buoys, and wave energy devices. The new bellow design of the Dynamic Tethers wave protection system acts like a shock absorber, reducing peak loads as much as 70%.
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