Nasa Tech Briefs

How to Select a DC Motor: Coreless and Iron Core Brushed DC Motors

DC motors possess linear relationships that allow for very predictable operation. Motion control manufacturers and designers depend greatly on the premise that these linear relationships will hold true, since the laws of physics do not change. However, despite their simplicity, selecting a DC motor for an application can still be a daunting task. There are many other variables to take into account including dimensions, load, duty cycle, etc. This white paper provides an overview on Coreless / Brushed DC motors, and what to consider before committing.

Posted in: White Papers, Motion Control, Motors & Drives, Automation


Radar Signal Generation with a High-Performance AWG

Radar ensures the safety and security of the skies, and lives depend on it. That’s why radar design measurements call for high frequency, realistic stimulus signals. You need to create these complex radar test signals at high frequencies, but what’s the best solution?

Posted in: White Papers, White Papers, Aerospace, Defense, Electronics & Computers, RF & Microwave Electronics


Multiturn Kit Encoders Without Batteries or Gears: A Cost-Efficient Approach for Rotary Position Measurement in Servomotors and Rotating Equipment

POSITAL is introducing a new set of component-level products that are designed to be built into servomotors or other types of equipment when real-time measurement of rotary position (angular displacement) or rotational speed is required. Based on POSITAL’s well-proven magnetic rotary encoder technology, these new products provide manufacturers with a flexible and cost-effective way of incorporating rugged and precise rotation measurement capabilities directly into their devices.

Posted in: White Papers, Mechanical Components, Mechanics, Motion Control


DO-178C Best Practices For Engineers & Managers

Practice: We’ve all engaged in it: piano, math, golf, flying… Usually practice involves a modicum of coaching, self-help and repetition. In avionics development, however, there is little time for practice; instead, everything counts. And the result has little margin for error: Schedules, budgets and particularly safety are all on the line. How then can “practice” be reconciled with “avionics development”? The best answer is to understand the breadth of worldwide development and glean the best knowledge and solutions from the aviation ecosystem. Welcome to DO-178C Best Practices.

Posted in: White Papers, Aerospace, Aviation, Software


Maxwell Time Decomposition Method Accelerates Simulation of Transient Electromagnetic Fields with Intel® Xeon® Processor E5-2697 v4

ANSYS teamed with INTEL to benchmark a new ANSYS Maxwell technology that delivers dramatic speed improvement for transient electromagnetic field simulations. Simulations that previously required weeks of computation time are now completed in a matter of hours. The key software technology is a new algorithm within Maxwell that allows engineers to solve time steps simultaneously as opposed to sequentially.

Posted in: White Papers, Software


Addressing Security Vulnerabilities at the Source

A Guide to Using Static Source Code Analysis to Develop More Secure Embedded SoftwareMany embedded developers underestimate how vulnerable embedded devices are to cyber-attacks. When security issues do occur, organizations often respond by addressing the symptoms of poor security rather than the root causes.

Posted in: White Papers, Aeronautics, Electronics & Computers, Semiconductors & ICs, Electronics & Computers, Software


How IoT is Making Security Imperative for All Embedded Software

Why embedded software development needs to change and what organizations can do to improve software security while reducing development timeMany IoT products lack proper security due to outdated software development practices. Hackers and criminals are acutely aware that many of the security procedures and applications in use today were designed to defend against attacks in the PC era – not current IoT threat vectors. Security isn't a product "add-on" or feature; it must be built in. Learn about the unique challenges of securing embedded applications and how to deploy processes and tools to deliver more secure products faster.

Posted in: White Papers, Aeronautics, Electronics & Computers, Semiconductors & ICs, Electronics & Computers, Software


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