Topic

The most common way to generate a rate-compatible family of codes is puncturing. In this method, one starts with a low-rate mother code and then selectively discards some of the coded bits to arrive at higher-rate codes. This approach is simple, but is not free of problems. Specifically, the mother...

Spacecraft display software is very costly and requires extensive testing and certification. Much testing must be repeated if the display software is changed in any way. Additionally, hand-coded displays are costly to create and maintain. For certain types of display formats with limited graphical...

A miniature, portable wireless vital signs monitor (MWVSM), called Mini-medic™, could aid in the triage and diagnosis of trauma patients with and without traumatic brain injury (TBI). The MWVSM consists of two components, both of which are the approximate size and weight of a cellphone: one is a...

Custom grounding cables and clips from Mueller Electric help prevent the generation of electrical sparks caused by static electricity, which can damage equipment and lead to safety hazards. The products support the typical grounding and bonding requirements found within aircraft fueling, electrical equipment,...

PCB Piezotronics’ surface microphone for R&D testing features a low-profile design ideal for testing in confined spaces and windy environments. The low-profile (1/8-in height) microphone and surface mount pad reduces the impact of undesired air pressure on the microphone during the measurement process. Model 130B40 is an...

Three high-performance thermoplastics from Victrex have been added to the Digimat-MX material and modeling database to accelerate the application development process while helping to minimize component weight and costs. The software suite from e-Xstream engineering offers data on Victrex PEEK 150CA30, Victrex PEEK 90HMF40, and...

Autonomous vehicles are a hot topic, most noticeably in the automotive world. But automated driving/operation is making significant headway in the off-highway realm as well, especially in mining applications. John Williamson of Komatsu America Corp. and Serge Lambermont of Delphi Electronics & Safety provide...

The actual J1349 rating is more than 100 hp more than Chrysler engineers teased in late May. The automaker's first production supercharged V8 uses a Lysholm-type twin-screw supercharger supplied by IHI. The engine's high-output spec required extensive upgrading of engine reciprocating components to...

A new electrohydraulic power steering system uses pump displacement control, eliminating throttling losses associated with hydraulic control valves by controlling the displacement of a variable displacement pump. Read more at http://articles.sae.org/13281.