Electronics & Computers

Thermal Management of Laser Diodes

High-power laser diodes can generate a great deal of heat. Even for laser diodes operating with 70% or higher efficiency, a large amount of applied energy is converted to heat. Since the performance and optical efficiency of a laser diode is dependent upon operating temperature, maintaining a stable temperature close to room temperature (about +25°C) is instrumental in achieving high reliability.

Posted in: Articles, Defense, Thermal Management, Lasers, Thermal management
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Avionics Upgrades

ARC® Avionics Corporation (ARC)
Kirkland, WA
425-576-5030
www.arcavionics.com/

ARC® Avionics Corporation (ARC), a wholly-owned business unit of AirSpeed® Engineering (ASE) and host MRO Commercial Jet, announced completion and delivery of a B737-400C as avionics-compliant for EASA-SESAR operations. ARC, as Universal Avionics integrator, has installed STC - ST03662AT for dual UNS-1Fw FMS and future UL-801 DataLink capability. Commercial Jet (KMIA) has installed an 11-pallet AEI cargo door and floor conversion as new NextGen DHL freighter conversion delivered to CarGOAir of Sofia, Bulgaria.

Posted in: Application Briefs, Aviation, Defense, Electronics, Avionics
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Clean Sky Open Rotor Engine Components

+44 (0)1527 517 715
www.gkn.com/aerospace

GKN Aerospace has delivered the two rotating frames for a major research program exploring open rotor aero-engine designs with a goal of achieving a 20% reduction in fuel consumption and CO2 emissions. The Open Rotor engine project is part of the Clean Sky Sustainable and Green Engines (SAGE) program, a 50% European Union-funded, multi-partner activity aimed at lowering fuel consumption and emissions through more efficient aero-engine architectures.

Posted in: Application Briefs, Aerospace, Aviation, Defense, Electronics, Suppliers, Engine components, Rotary engines
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Custom 19” Fan Tray

Verotec (Derry, NH) recently custom designed intelligent fan trays for a major defence project. The 19-inch rackmounted 1U trays have six fans, strategically located within the tray to maximise the cooling of critical elements of the electronic system located above the fan tray. Key issues for the fan tray design were noise levels, current consumption and reliability. A custom control board sequentially powers up each of the fans in order of importance to minimise initial inrush current. An embedded microprocessor controls fan speed using PWM technology.

Reliability is critical, so three separate events will trigger a warning signal: if power is lost to the fan tray, if the controller board itself develops a fault or if the speed of any fan falls below 20% of maximum. The fan cooling the main processor board is deemed to be a critical component, so if its speed falls below 20% the relay latches into the alarm position. If triggered by any of the other five fans, the alarm relay will re-energise when the speed increases above the 20% threshold.

For Free Info Visit http://info.hotims.com/55588-512

Posted in: Products, Defense, Electronics & Computers, Thermal Management, Consumer Product Manufacturing
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Rugged 1U MicroTCA Chassis Platform

VadaTech (Henderson, NV) now offers a rugged 6-slot MicroTCA chassis in a 1U height designed to meet MIL-STD- 901D and 810G for shock and vibration and MIL-STD-461F for EMI. The VT950 holds up to 6 Advanced Mezzanine Cards (AMCs) and has an integrated MCH with IEEE1588/SyncE/GPS capabilities. This includes clock disciplining with arbitrary clock frequency output and holdover (Stratum-3 option) including 1 pulse per second (PPS) regeneration and holdover. The MCH can use various fabrics such as 40GbE/10GbE, PCIe Gen 3, or Serial RapidIO.

The rugged 1U chassis offers front-to-rear cooling with a 500W universal AC or 400W DC power supply. Another feature of the VT950 is an optional JTAG Switch Module, including a Virtual JTAG probe. MicroTCA.1 modules with front panel retention screws can be plugged into the chassis. VadaTech offers special retention clips so that standard MicroTCA. 0 AMCs can be securely held into the chassis during shock and vibration.

For Free Info Visit http://info.hotims.com/55588-517

Posted in: Products, Defense, Electronics & Computers, Consumer Product Manufacturing
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Cloud Security & Compliance

Not too many years ago, network security was a relatively low level priority in most organizations. That has changed today due to such high level failures as the recent breaches at Sony and Target. Closer to home, the University of Maryland is now incurring large expenses for all students due to the recent leak of personally identifiable student information.

Posted in: Articles, Aerospace, Defense, Electronics & Computers, Cyber security
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MicroTCA Computing for Mil/Aero Applications

Small Form Factor (SFF) embedded systems have been gaining popularity due to their small size, weight, and power (SWaP) advantages. The SFF architectures are typically purpose-built, providing just a few specific functions. But, the performance level is often limited and the versatility and re-usability across multiple applications is typically very low. Is a balance available where there is high performance and versatility in an open standard architecture, but a compact size that is optimized for SWaP-C (C stands for cost)?

Posted in: Articles, Aerospace, Defense, Electronics & Computers, Architecture, Computer software / hardware
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Isotope Beta-Battery Approaches for Long-Lived Sensors

The energy density of isotopes exceeds that of chemical energy storage by six orders of magnitude. Isotopes are used in many commercial applications, and are produced and available at modest prices. The power requirements of many sensors and communications equipment can greatly reduce the power requirements of many devices such as sensors, light sources, and transmitters. Chemical batteries are the mainstay of power for these devices. However, chemical batteries have limited lifetimes. This makes remote use and replacement difficult for applications extending the lifetime use.

Posted in: Briefs, Defense, Power Management, Sensors, Batteries, Sensors and actuators
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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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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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