Power and Electrical Engineering

Although NASA’s X-43A and other hypersonic airplanes use air-breathing engines and fly much like 747s, there’s a big difference between ripping air at Mach 10 (around 7,000 mph) and cruising through it at 350 mph.

These differences are even more pronounced when hypersonic aircraft sip rarified air at 100,000 feet, while commercial airliners gulp the much thicker stuff at 30,000. Aero-thermodynamic heating is a very big deal at Mach 10. The critical point comes where air changes f

Chemical engineers at Purdue University have made a discovery that may help to improve a promising low-polluting energy technology that combusts natural gas more cleanly than conventional methods.

The finding revolves around the fact that catalysts and other materials vital to industry have complex crystalline structures with numerous sides, or facets. Different facets sometimes provide higher performance than others, so industry tries to prepare catalytic materials that contai

Star Trek-like technology being developed at The University of Arizona might soon screen airplane passengers for explosives as they walk through a portal similar to a metal detector while hand-held units scan their baggage.

The new device is about 1,000 times more sensitive than the equipment currently used in airports to discern explosives. Rather than analyzing a swab from a person’s briefcase, the new technology could detect the traces of explosives left in air that passes

A wood-fueled electricity generating plant may be in your future.

In fact, the future is ’now’ in some Scandinavian countries, said Dr. Darwin Foster, Texas Cooperative Extension forestry program leader. “In Sweden, they’re already bundling up what we’re leaving in the forest after a timber harvest and using it as bio-fuel,” Foster said. “Bio-fuel” is all-inclusive term that includes any renewable resource used to generate energy. As with ethanol distilled fr

Student-made device sends obstacle warnings to mechanical bug’s brain

Can a robot learn to navigate like a cockroach? To help researchers find out if a mechanical device can mimic the pesky insect’s behavior, a Johns Hopkins engineering student has built a flexible, sensor-laden antenna. Like a cockroach’s own wriggly appendage, the artificial antenna sends signals to a wheeled robot’s electronic brain, enabling the machine to scurry along walls, turn corners and

Replacing lead-based solder

Electrically conductive adhesive (ECA) materials offer the electronics industry an alternative to the tin-lead solder now used for connecting display driver chips, memory chips and other devices to circuit boards. But before these materials find broad application in high-end electronic equipment, researchers will have to overcome technical challenges that include low current density.

Using self-assembled monolayers – essentially molecular