Features

DC Gearmotor

Midwest Motion Products (Watertown, MN) released the Model No. MMP-S28-400A GP81-046 BR-015 DC gearmotor. The device accepts any 24 V DC source. The gearmotor is reversible; the output is rated for 61 Nm continuous torque at 43 rpm and 100 Nm peak. Motor windings for 36, 48, 60, and 90 V are available. The integrally mounted fail-safe brake requires 24 V DC power and features a holding torque of 15 in-lbs. Mounting is accomplished with four “face mount” M-6 threaded holds, equally spaced on a 65 mm B.C. diameter. Dimensions are 3.2 (max diameter) × 13.3" long, and the unit has a keyed output shaft diameter of 19 × 49 mm long.

Posted in: Products, Motion Control

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Dr. Murzy Jhabvala, Chief Engineer of the Instrument Systems and Technology Division

Goddard Space Flight Center, Greenbelt, MD Dr. Murzy JhabvalaVisible light is only one narrow band of the electromagnetic spectrum, and doesn't always tell scientists what they need to know. Infrared, which is outside the range of human eyesight, has for years been used to delve out mysteries of distant stars or to allow users to see in the dark. NASA scientists have now improved the Quantum Well Infrared Photodetector (QWIP) array infrared technology to gain more detail than ever before. NASA engineer Dr. Murzy Jhabvala led the project.

Posted in: Who's Who

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Anthony Kelley, Lead Flow Research Engineer, Marshall Space Flight Center, Huntsville, AL

As petroleum prices spiral higher, new technologies are being developed to help keep prices down. The balanced flow meter, technology originally developed by NASA for the space shuttle, promises to ease pain at the pump by being more precise and consuming less power than current metering devices. Leading the project is NASA engineer Anthony Kelly.

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Bill Jackson, Deputy Director, NASA Independent Verification and Validation Facility, Fairmont, WV

Bill Jackson Searching for defects amid several thousand lines of code in mission critical software, NASA’s Independent Verification and Validating Facility (IV&V) was open for business in 1994 as a safeguard against mission failure. Reporting to the Goddard Space Flight Center, the IV&V audits software across NASA (and other government agencies) dealing with several different projects concerning satellites and shuttle mission software. The current Deputy Director, Mr. Jackson was Acting Director of IV&V from January to October of 2006.

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Dr. Simon "Pete" Worden, Center Director, NASA Ames Research, Moffett Field, CA

Before becoming NASA Ames Research Center Director, Dr. Worden was a Research Professor of Astronomy, Optical Sciences, and Planetary Sciences at the University of Arizona, where his research involved the development of large space optics for national security and scientific purposes. Dr. Worden retired in 2004 after 29 years of active service in the U.S. Air Force, where he served as a Brigadier General. He is a recognized expert on civil and military space issues, and has authored or co-authored more than 150 scientific technical papers in astrophysics, space sciences, and strategic studies. Dr. Worden also serves as a scientific co-investigator for two NASA space science missions.

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10G and “Killer Apps” Excite Telecom Market in ‘07

In the optical communications industry, it’s important to look back before you look forward. History has a way of putting the future into perspective.

Posted in: Features, ptb catchall, Photonics, Articles

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Laser Diode Market Stays Hot in 2007

The high-power laser diode market has grown rapidly in the last twelve months, a trend that is set to continue throughout 2006 and beyond. The global market for laser systems is forecast to grow by 8% in 2006 to US $5.9 billion, with diode lasers alone growing by 8%.

Posted in: Features, ptb catchall, Photonics, Articles

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