Electronics & Computers

Loop Thermosyphons

Two-phase cooling has been utilized in the electronics cooling industry for many decades, with possibly the most well-known adaptation being the heat pipe. Heat pipes are capillary-driven, two-phase devices that rely on the boiling and condensation of a working fluid to transfer heat significant distances with minimal temperature gradient. The flow of the working fluid inside of a heat pipe is facilitated by a capillary wick structure that relies on surface tension to return the condensed liquid to the heat generating components. Heat pipes have found their way into a large number of industries and applications because of their high performance, high reliability, and low cost. Unfortunately, as the electronics industry’s insatiable quest for smaller, higher-powered devices soldiers on, the discrete cooling power of the heat pipe approaches obsolescence.

Posted in: Articles, Aerospace, Board-Level Electronics, Electronic Components, Electronics, Electronics & Computers, Power Management, Power Supplies, Thermal Management
Read More >>

CompactPCI Serial Space

There are a few open specifications in the embedded industry that have been used in the extreme environments of space over the years. These include VME, CompactPCI, OpenVPX, and MicroTCA. But, prime contractors such as Airbus and others desired a high performance and versatile architecture that was relatively simple and cost-effective. The CompactPCI Serial Space specification was ratified in 2017 to address these requirements, resulting in a compelling architecture for defense and space-based projects.

Posted in: Articles, Aerospace, Communications, Defense, Board-Level Electronics, Electronic Components, Electronics, Electronics & Computers, Measuring Instruments, Test & Measurement
Read More >>

Designing With MIL-STD-1553B Components

The interconnected backbone of a MIL-STD-1553B vehicle depends on the electrical and mechanical reliability of the components, the design, and the installation. With the vast array of MIL-STD-1553B specified sub-assemblies, there are factors that can go overlooked for passive components such as couplers, cables, and connectors. Often built with kilometers of wiring, aircraft in particular can be difficult to troubleshoot and must be inspected frequently for potential failures such as intermittent connections, shorts, and corrosion. Still, these passive components that make up the network can be individually assessed to operate with a high level of integrity.

Posted in: Articles, Aerospace, Board-Level Electronics, Computers, Electronic Components, Electronics, Electronics & Computers, Power Management
Read More >>

Open Standard Middleware Enables New HPEC Solutions

The military embedded computing landscape has been transformed from where it was 20 years ago — and that has been almost entirely enabled by the ability of prime contractors, systems integrators, and OEMs to leverage the products of COTS manufacturers who take leading edge commercial technologies and apply them successfully to the world of military computing. A look at the commercial landscape today reveals cell phones that are putting vast amounts of location- aware information — and the ability to process that information — directly into the hands of consumers. The Internet of Things has become a deployable reality, with data derived from millions of connected sensors.

Posted in: Articles, Aerospace, Communications, Defense, Electronics & Computers, Sensors, Architecture, Computer software / hardware, Internet of things, Military vehicles and equipment
Read More >>

Cooling Your Embedded System: What Can Your Open Standard Architecture Handle?

Embedded computing systems for Mil/Aero applications are often conduction-cooled in an ATR or nonstandard chassis. However, there are many designs that require 19" rackmount systems with forced-air cooling. As more processing performance is packed into tight spaces, enclosures that provide advanced cooling options are increasingly common.

Posted in: Articles, Aerospace, Defense, Thermal Management, Computer software / hardware, Embedded software, Cooling, Mountings, Fans
Read More >>

Evaluating Key Certification Aspects of Multicore Platforms for Safety Critical Avionics Applications

High performance, low power consumption and small footprint requirements imposed by the embedded market on the processor industry is causing a definite move away from single-core processors to multicore processors. Multicore processors have been deemed as the future of Size, Weight, and Power (SWaP) constrained applications like military and avionics. They provide higher performance (MHz/W) at lower power. They also allow consolidation of multiple functions/ applications onto a single platform.

Posted in: Articles, Aerospace, Aviation, Defense, Electronics & Computers, Avionics, Computer software / hardware, Safety critical systems, Certification
Read More >>

Advances in Lightweight Electronics Protection

Lightweighting continues to be a key topic for the aerospace, avionics and defense industries as new metals and composites are being integrated into end products and assemblies with the goal of decreasing overall system weight. As technologies continue to evolve, with components often decreasing in size and increasing in complexity, the materials used to manufacture and protect the latest components and systems are also improving. Whether used in commercial or military aircraft, rockets, satellites, terrestrial or water vessels, or the latest in unmanned air, land and sea vehicles; systems within these industries must meet similar requirements – assemblies, components and electronics must be both lightweight and designed to withstand harsh operating conditions.

Posted in: Articles, Aerospace, Defense, Electronics, Coatings & Adhesives, Avionics, Electronic equipment, Lightweight materials, Lightweighting, Military vehicles and equipment
Read More >>

Powering Outer Space: An In-Depth Look at Aerospace Battery Technology

With space’s extreme environments, there is never a one-size-fits-all battery. Nor is any space mission ever the same, so customized batteries for each operation are essential. Saft, has been powering outer space for more than 50 years. Saft’s first battery was launched into space in 1966 aboard the D1A “Diapason”, which was powered with nickel cadmium (Ni-Cd) technology. To date they are the only battery manufacturer to supply all battery technologies used in space: Nickel (Ni-Cd, Ni-H2), primary lithium (Li-SO2, Li-SOCl2 and Li-MnO2) and rechargeable lithium or lithium-ion (Li-ion).

Posted in: Articles, Aerospace, Batteries, Power Supplies, Batteries, Supplier assessment, Spacecraft
Read More >>

Advanced Thermal Management Solutions

Now more than ever, devices with increasing power and smaller footprints are demanding a good stable cost effective thermal management solution. Fortunately many options are available today. However, for device packaging designers not familiar with these technologies, determining which thermal management technology is appropriate for their application can be a challenging task. To help sort out the many options, here is an overview of three very different thermal technologies: passive heat pipes, pumped two-phase cooling systems and temporary thermal storage/ phase change materials (PCM) heat sinks. In each case we’ll provide an overview of each of these technologies, explain how they function and provide some examples of when they should be considered.

Posted in: Articles, Aerospace, Defense, Thermal Management, Thermal management, Packaging
Read More >>

Thermoelectric Cooling

There are many places one can go to get an outline on the pros and cons of different methods for enclosure cooling. Although we will briefly touch on them here, this is really an in-depth article on how to choose a Peltier (thermoelectric) air conditioner, once you have committed to the technology.

Posted in: Articles, Defense, Thermal Management, Air conditioning, Thermal management
Read More >>