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Unmanned Ground Vehicle Communications Relays

The need for a high-bandwidth communication link to carry multiple video channels from a mobile robot (unmanned ground vehicle, or UGV) back to a control station requires using high-frequency RF communication links. These links are mostly line-of-sight, often limiting the flexibility of the robot’s movement. The Autonomous Mobile Communication Relays project demonstrated the capability of autonomous slave robots to provide communication-relaying capability for a lead robot exploring an unknown environment.

Posted in: Articles, Products, Aerospace, Defense, RF & Microwave Electronics, Telecommunications, Vehicle networking, Autonomous vehicles
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30 GHz and 35 GHz Microstrip Isolators

TRAK Microwave (Tampa, FL) has announced two new Microstrip Isolators covering popular mm-wave frequency bands. Models T001110 (29.6-30.6 GHz) and T001111 (34.5-35.5GHz) integrate ferrite circulator/ isolator substrates on to printed circuit board (PCB) material providing for a high performance, yet economical, solution. Typical insertion loss is 0.8dB, return loss 20dB, and isolation of 20dB. These devices handle RF power levels consistent with T/R Module applications in phased array radar or SatCom tracking antenna systems.

Posted in: Products, Defense, Manufacturing & Prototyping
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Compute Stick with Windows

Mouser Electronics, Inc. (Mansfield, TX) is now shipping the Intel® Compute Stick with Windows 8.1, a new generation of computer from Intel Corp. The Compute Stick is a revolutionary new device that enables any screen with an HDMI interface to become a fully functional personal computer. The Compute Stick comes pre-installed with the Microsoft ® Windows® 8.1 operating system. The Intel Compute Stick is a fully-functional computer in a package similar to a large USB stick.

Posted in: Products, Defense, Manufacturing & Prototyping
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ARINC 429 XMC Interface

GE Intelligent Platforms (Huntsville, AL) recently announced the RARXMC ARINC 429 High Density XMC Interface for deployment on many single board computers. Designed for embedded, laboratory and simulator applications, the RARXMC supports maximum data throughput on all channels while providing onboard message scheduling, label filtering, multiple buffering options, receive message time-tagging and error detection, and IRIG-B receiver (AM or DC/TTL) and generator (DC/TTL).

Posted in: Products, Defense, Manufacturing & Prototyping
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Avionics Interface Computer

Data Device Corporation (Bohemia, NY) has introduced the Avionics Interface Computer (AIC), providing a scalable, programmable, and portable platform to develop and test MIL-STD-1553 and ARINC 429 system applications via an Ethernet network. The AIC features 2 PMC and 2 Mini- PCIe expansion sites, allowing users to select interface boards optimized for their specific application and connectivity needs. An onboard Intel® Atom™ E3845 Quad Core 1.91GHz processor provides programming flexibility and simplifies connectivity by automatically bridging messages in real-time between Ethernet, ARINC 429, and MIL-STD-1553. The BU-67121W AIC also lowers the complexity and cost of many long discrete cables by locating the 1553/429 interfaces close to onboard electronics, and using the Ethernet interface to provide network access and control from the test lab.

Posted in: Products, Defense, Manufacturing & Prototyping
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Adaptive IF Relay XMC

Pentek, Inc., (Upper Saddle River, NJ) has introduced the newest member of its Cobalt® line of XMCs (Switched Mezzanine Cards). The Model 71624 dual channel, 34 signal, adaptive IF (Intermediate Frequency) relay XMC with a Virtex- 6 FPGA accepts two IF analog input channels, modifies up to 34 signals, and then delivers them to two analog IF outputs. Any signal within each IF band can be independently enabled or disabled, and changed in both frequency and amplitude as it passes through the module. The Model 71624 features 34 digital down converters (DDCs), each independently tunable across a 100 MHz input IF range, handling signal bandwidths from 20 kHz up to 312 kHz. The DDCs deliver 34 baseband signals to the host computer, which determines how each signal is dropped, replaced, or changed in amplitude and frequency. The modified signals are then combined and delivered as an analog IF output.

Posted in: Products, Defense, Manufacturing & Prototyping
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Brushless DC Motors

BEI Kimco Magnetics (Vista, CA) has developed new frameless brushless DC motors in multiple designs for a variety of applications including robots and remotely piloted military vehicles. These new motors provide operational efficiencies in excess of 90% by utilizing proprietary low magnetic circuit design techniques to extend battery life. Other important features include a frameless motor design composed of two pieces a rotor and stator. This design makes it easy to integrate into a customer’s existing assembly, minimizing the need for extra components and reducing overall weight. Motors range up to 20" in O.D. with torques in excess of 50Nm and operational speeds beyond 70K rpm.

For Free Info Visit http://info.hotims.com/55592-513

Posted in: Products, Defense, Manufacturing & Prototyping
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Synthetic Vision Guidance Systems Giving 2D data a 3D perspective

Synthetic Vision (SV) displays replace the pilot’s traditional 2D primary flight display (PFD) with a 3D perspective view display. The 3D SV perspective display is rendered from an onboard terrain database, e.g., one derived from the Enhanced Ground Proximity Warning System (EGPWS) to create a virtual reality- like image. A comparison of a traditional 2D PFD with a 3D SV PFD is shown in Figure 1.

Posted in: Articles, Aerospace, Defense, Navigation and guidance systems, Displays
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The Conundrum of DO-254 Compliance and COTS IP

A tornado is blowing through a specific area of the semiconductor market. The market for Intellectual Property (or IP, also known as IP cores or IP blocks) is roughly $2.5B and growing at twice the rate of the overall semiconductor market. As semiconductor platforms offer a continually increasing silicon playing field, designers are struggling to fully utilize the design real estate now available to them. Traditional design techniques simply can’t keep pace. This is where IP fits in. IP provides pre-designed building blocks that can be connected relatively quickly and easily to create complex, custom semiconductor designs. Thus, IP is a critical bridge between designers’ creative productivity and the markets’ ever increasing demands for cheaper, smaller, lighter, lower-power, more reliable, full-featured designs.

Posted in: Articles, Aerospace, Defense, Design processes, Semiconductors
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Let the Good Times Continue to Roll

It is hard to imagine just how radical the change in fortunes for the world’s major commercial aerospace manufacturers has been in the last few years. Just ten years ago the smart money in aerospace pointed to the defense sector as the best source of future profitability. But just as this was reaching a peak, the full impact of a near meltdown in global financial markets brought home to Western governments that defense budgets couldn’t just keep on expanding and a new era of military program cuts began.

Posted in: Articles, Aeronautics, Aerospace, Defense, Commercial aircraft
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