Features

This Month in NASA History

This year, as NASA celebrates its 50th anniversary, we’ll be highlighting technology innovations and important moments in NASA history, leading to our special 50th Anniversary Issue in October. This Month in NASA History: On February 20, 1962, John H. Glenn became the first American to circle the Earth, making three orbits in his Friendship 7 Mercury spacecraft. The flight lasted a total of 4 hours, 55 minutes, and 23 seconds before the Friendship 7 spacecraft splashed down in the ocean.

Posted in: UpFront

Read More >>

Correction of Retardation and Autism in Mice Points to Human Treatment

Mark Bear (right), director of thePicower Institute and PicowerProfessor of Neuroscience), andGu¨l Do¨ len, a graduate student atBrown University, report the correctionof fragile X syndrome inmice. (Donna Coveney)Researchers at MIT’s Picower Institute for Learning and Memory have corrected key symptoms of mental retardation and autism in mice. Their findings indicate that a certain class of drugs could have the same effect in humans.

Posted in: UpFront

Read More >>

Dr. Keith Gendreau, Physicist, Goddard Space Flight Center, Greenbelt, MD

While working on designing an X-ray navigation system for NASA’s next-generation Black Hole Imager, Dr. Keith Gendreau, a physicist at the Goddard Space Flight Center, developed the world’s first X-ray communication system.

Posted in: Who's Who

Read More >>

How a Supercomputing Innovation Accelerated a Business

Larry Lukis Founder and CTO Proto Labs, Inc. Maple Plain, MN Proto Labs is a quick-response custom manufacturer that provides design engineers with prototypes of plastic parts faster than anyone in the world. Our Protomold division produces prototypes (and short run production parts) by injection molding, and our First Cut Prototype division produces prototypes by CNC machining plastic stock.

Posted in: Articles

Read More >>

Protecting AC Motors From Destructive Shaft Currents

The use of variable-frequency drives (VFDs) to control AC motors has increased dramatically in recent years. In addition to low operating cost and high performance, they save energy. Today, the challenge facing system designers and engineers is to minimize damage to AC motors from shaft current.

Posted in: Features, Articles

Read More >>

Getting on the Right Motion Bus

As modern machines have become more advanced, the complexity involved in motion control has escalated. Today, servos have replaced cams and gears on machines and multiple axis of synchronized motion control have become commonplace. Distributed motion control requires busses able to handle rigid jitter and timing demands including:

Posted in: Features, Articles

Read More >>

Integrated Motor Control Meets Aviation Needs

The trend in aircraft design is toward more efficient brushless DC motors. A integrated motor drive module for brushless DC motors from International Rectifier (El Segundo, CA) reduces the effort of programming the motor control and simplifies certification. Because the device is configured for sensorless field oriented control, the elimination of Hall sensors improves reliability while reducing component count. It enables the aircraft to achieve greater fuel economy and lower maintenance costs.

Posted in: Features, Articles

Read More >>

The U.S. Government does not endorse any commercial product, process, or activity identified on this web site.