MEMs

Propulsion Technology Could Combat Flight Pollution

A breakthrough propulsion technology to provide greener air transport could be developed after the underlying engineering was declared a success. Six universities and two research organizations from across the EU demonstrated the scientific feasibility of a novel propulsion method that overcomes the main limitations of traditional systems related to jet deflection exhausts.

Posted in: News, News, Defense
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Army Equips Stryker Unit With New Communications Technology

The Army's Stryker vehicle, designed to quickly move soldiers into a combat zone, is swift and mobile. Now its communications equipment will be, too.

Posted in: News, Communications, Wireless, Defense, RF & Microwave Electronics
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Smaller Lidars Could Let UAVs Conduct Underwater Scans

Bathymetric lidars – devices that employ powerful lasers to scan beneath the water's surface – are frequently used to map coastal waters. At nearly 600 pounds, the systems are large, heavy, and require costly, piloted aircraft to carry them. But a team at the Georgia Tech Research Institute (GTRI) has designed a new approach that could lead to bathymetric lidars that are much smaller and more efficient than the current full-size systems. The new technology, developed under the Active Electro-Optical Intelligence, Surveillance and Reconnaissance (AEO-ISR) project, would let modest-sized unmanned aerial vehicles (UAVs) carry bathymetric lidars.

Posted in: News, Defense
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New Device Measures How Birds Take Flight

It's quite easy to look at a bird and deduce that it flies by flapping its wings, but understanding exactly how a bird generates lift has long eluded scientists. Now engineers at Stanford have developed a device that precisely and humanely measures the forces generated by a bird's wings while in flight. The work promises to answer many mysteries of bird flight, providing aid in the design of innovative and efficient unmanned aerial vehicles, known as UAVs or, more recently, drones.

Posted in: News, Defense
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Magnetic Field Lines Made Visible in 3-D and Real Time

Scientists at the Fraunhofer Institute have developed a high-resolution magnetic line camera to measure magnetic fields in real time, which is particularly useful for quality assurance during the manufacture of magnets. Read more at http://articles.sae.org/13706.

Posted in: Articles, News, Aerospace, Defense, Cameras, Manufacturing & Prototyping, Measuring Instruments
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MIT Provides Yeast a Different Environment for Ethanol Tolerance

Ethanol and other alcohols can disrupt yeast cell membranes, eventually killing the cells. In research funded by the MIT Energy Initiative and the U.S. Department of Energy, researchers at MIT and the Whitehead Institute for Biomedical Research found that adding potassium and hydroxide ions to the medium in which yeast grow can help cells compensate for that membrane damage. Read more at http://articles.sae.org/13609.

Posted in: Articles, News, Aerospace, Defense, Energy, Medical
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'Reman' Engine Market Steady, but Complexity Challenges Production Efficiency

High-tech design causes time to remanufacture engines to nearly triple and adds to cost, while used engines remain a competitive factor. However, Purdue University data shows remanufacturing is far more energy efficient than installing a new powerplant. Read more at http://articles.sae.org/13703.

Posted in: Articles, News, Aerospace, Defense, Energy Efficiency, Manufacturing & Prototyping
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Going Off-Road With Hard-Carbon Lithium-Ion Battery Technology

EnerDel’s second-generation Mobile Hybrid Power System (MHPS) was delivered in May to the U.S. Army Corps of Engineers’ Research and Development Center in Champaign, IL. It offers a reduction in diesel fuel consumption of up to 70% “in most use cases as demonstrated by the military.” The MHPS-80, as delivered to USACE-ERDC, features an onboard 15-kW charging generator, an 80-kW·h lithium-ion battery system, power inverter, and dc input for wind and solar energy. Read more at http://articles.sae.org/13540/.

Posted in: Articles, News, Aerospace, Defense, Batteries, Power Management, Energy Efficiency, Solar Power
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Digitally Controlled PIN Diode Attenuator

Model A3P-68N-3 from G.T. Microwave (Randolph, NJ) is a digitally controlled PIN diode attenuator that operates from 6.0-18.0 GHz. It is capable of 32 dB range in 0.125 monotonic dB steps with a supply voltage of +/-12 to +/- 15 VDC @ +/- 100 mA. The attenuation flatness is +/- 2.0 dB and the operating temperature range of 0 to +50°C with a coefficient of +/- 0.03 degrees. With a maximum V.S.W.R. of 1.9:1 and an insertion loss less than 3.25 dB. This device operates with a handling power of +13 dBm CW, 1.0 Watt max; via 8 BITs of TTL compatible binary logic and a switching speed less than 1.0 μSec max. The package size is 2.00 × 2.50 × 0.75 inch.

Posted in: Products, Aerospace, Defense, Manufacturing & Prototyping
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1 GHz, 10 GS/s Oscilloscope

Teledyne LeCroy (Chestnut Ridge, NY) has introduced the WaveSurfer 10 oscilloscope. Offering 1 GHz and 10 GS/s, the WaveSurfer 10 combines the MAUI advanced user interface with powerful waveform processing, in addition to advanced math, measurement and debug tools, and a 10.4" touch screen display. The high sample rate of 10 GS/s on all 4 channels, 32 Mpts of memory, sequence mode segmented memory, history mode waveform playback, 13 additional math functions, and 2 simultaneous math traces enable the WaveSurfer 10 to perform advanced analysis on long captures with 10x oversampling to find the root cause of problems. The LabNotebook documentation and report generation tool provides a fast way to save waveforms, save setups and screen images, report results, and view offline.

Posted in: Products, Aerospace, Defense, Electronics & Computers, Manufacturing & Prototyping
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