Broadcasters who use satellites canít accept shutdowns, even when they happen only twice a year during eclipses. The Optus D3 satellite made by Orbital Sciences Corp. will use rechargeable lithium-ion batteries from Saft for power when the spacecraft is blocked from the sun during two eclipses. The two rechargeable Saft lithium ion 180W/hour average cells trim weight in half compared to alternative technologies studied by Orbital, letting the company add more critical payload equipment. It carries 32 transponders that will provide Ku-Band direct television broadcasting services to Australia and New Zealand after 2009.
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.
Engineers at the University of San Diegoís Jacobs School of Engineering have designed biobatteries on commercial tattoo paper, with an anode and cathode screen-printed on and modified to harvest energy from lactate in a personís sweat.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.