Cone Drive gear units, which promise improved seal arrangement, is now in control of the giant shutters that protect the Keck 1 telescope on Hawaii's Mauna Kea volcano, the world's largest optical and infrared telescope. The units come with modified input shafts, hollow shafts, housings, special output mounting flanges, and keeper plates in hollow bores. They also feature 14 custom 8-inch center distance HP double enveloping worm reducer units with a special ratio of 9.75:1. According to the maker, the units use taconite seal arrangements on both input and output shafts while expansion chambers provide sealed unit. Four gearboxes have been installed and commissioned on the bottom telescope shutter. Eight more will be installed on the top shutter in the next two years. For more info, go to www.textronpt.com.
Researchers at the University of Maryland have achieved a first in lithium-ion battery science: the development of a successful lithium-based battery using one material for all three core components of a battery -- anode, cathode, and electrolyte.
The online Bar Steel Fatigue Database for automotive design engineers has been updated for the fifth time and now contains 134 iterations, or grade/process combinations. It provides better predictability for designing parts with long-term reliability and durability.
FPGAs use programmable fabric to create custom logic, but this flexibility comes at a cost -- usually around 10 times more silicon real estate and 10 times the power dissipation. Can we really claim any FPGA is low power?
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.