Los Angeles —"Roll" is the first of two satellites that Boeing Satellite Systems Inc. built for XM Satellite Radio Inc. (Washington, D.C.). The second satellite—designated "Rock"—is scheduled to launch this month. Together, the two spacecraft, "Rock" and "Roll," will change the way Americans listen to radio, according to BSS President Tig Krekel, delivering up to 100 channels of digital-quality music, news, and information to cars, homes, and other listening environments equipped with a small antenna. "Each satellite has the same coast-to-coast footprint to ensure maximum signal and system reliability to each XM Satellite Radio user," Krekel adds.
More and more robots are becoming more autonomous all the time. Now Lockheed Martin has completed a demo mission with two completely autonomous robotic vehicles performing resupply, reconnaissance, surveillance, and target acquisition.
Producing high-quality end-production metal parts with additive manufacturing for applications like aerospace and medical requires very tightly controlled processes and materials. New standards and guidelines for machines and processes, materials, and printed parts are underway from bodies such as ASTM International.
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