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.
Researchers working with additive manufacturing have said multimaterial techniques will allow industry “to fabricate materials with combinations of density, strength, and thermal expansion that do not exist [yet].”
The term "multiphysics" is used to describe the simulation of multiple types of physics and their influence on one another -- for example, the investigation of the behavior of a chemical in liquid form will involve both chemistry and fluid dynamics.
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