Keyword: Analysis methodologies

Briefs: Materials

When testing composite structures, it is important to understand the response of the structure to the load. Of significance is the formation of damage and growth of that damage leading...

Application Briefs: Mechanical & Fluid Systems

Hyperspectral imaging is an exciting and promising new technology. When combined with modern machine learning software and actuators such as robots, air-jets, or flippers, hyperspectral...

Articles: Semiconductors & ICs

For most electrical engineers, the simple term “motor” means one thing: an electromagnetic rotary-motion unit. Engineers who need linear rather than rotary motion consider adding a mechanical...

Articles: Materials

Metal additive manufacturing is being embraced as a choice for parts production across many fields — including aerospace, automotive, healthcare, and other industries —...

Briefs: Software
Deterministic Annealing Clustering

This software partitions a dataset into clusters of data using the Deterministic Annealing algorithm, a more sophisticated clustering technique than usually available in scientific and commercial software. The results provided are deterministic, i.e. unique (within the machine precision tolerance), whereas...

Application Briefs: Materials
Collier Research Corp.
Newport News, VA
HyperSizer.com

When the Stratolaunch aircraft rolled out of the Mojave, CA Air and Space Port hangar this spring in...

Briefs: Mechanical & Fluid Systems

This technology is designed to protect against leaks in solenoid, check, manual, and relief valves, as well as disconnects and regulators.

NASA’s Marshall Space Flight Center has developed a new,...

Briefs: Test & Measurement

NASA’s Langley Research Center has developed a new technology for measuring the junction temperature of laser diode arrays (LDAs) that...

Briefs: Electronics & Computers
Integrated Three-Dimensional Module Heat Exchanger for Power Electronics Cooling

Critical elements in the operation of electric drive systems are power electronics and power semiconductor packages. Improving thermal management of power electronics can help reduce the cost, weight, and volume of electric drive systems, and thus increase market...

Briefs: Software
Custom Administration Reporting (gTracker)

A reporting tool was needed that could indicate the accuracy of search results by tracking the number of clicks required by users to find their desired search results. The application should also capture the number of times other links and like filtering components are clicked. The report should have...

Briefs: Software

DiVisa is a multi-dimensional information visualization tool that en ables researchers to understand the behavior of network data.

Articles: Sensors/Data Acquisition

We use touch, the dominant user interface for years, to tap keyboards on laptops and tablets, to communicate with our car’s portable GPS, and to text friends and take photos from our...

Briefs: Photonics/Optics
Invertible Time Invariant Linear Filtering (InTILF) Method for Pattern Detection and Modeling of Stochastic One- or Two-Dimensional Data

X-ray astronomy offers the opportunity to observe important phenomena, including the early accretion of massive black holes and detecting diffuse ionized intergalactic gas that is heated to X-ray temperatures...

Articles: Robotics, Automation & Control

Traditional robot applications limit operator access to hazards through hard-guarding and protective devices that either detect and stop the hazard, or prevent access into the safeguarding space until the...

Application Briefs: Motion Control

A manufacturer of low and high-rise elevators faced a challenge when customers began calling for a flexible elevator to meet the needs of the growing mid-rise, mixed-use building...

Briefs: Photonics/Optics

Measurements of the cosmic microwave background are a powerful probe of the early universe. Part-per-million fluctuations in the intensity of background trace the...

Briefs: Test & Measurement

The Naval Research Laboratory (NRL) has developed a metrology workbench for the measurement and visualization of displacement and strain fields in three dimensions. The...

Briefs: Software
Study of Formulating Conserved Scalar Equations for Turbulent Reactive Flows with General Species Mass- Diffusion Coefficients for Utilization in Flamelet Models

The modeling of turbulent reactive flows is a subject of contemporary research. Current turbulent-reaction models cannot account for realistic complexities such as distinct species...

Briefs: Imaging
Invertible Time Invariant Linear Filtering (InTILF) Method for Pattern Detection and Modeling of Stochastic One- or Two-Dimensional Data

X-ray astronomy offers the opportunity to observe important phenomena, including the early accretion of massive black holes and detecting diffuse ionized intergalactic gas that is heated to X-ray temperatures...

Briefs: Information Technology
Detection and Characterization of Recurring Slope Lineae

Recurring Slope Lineae (RSL) are low-albedo features that appear and disappear seasonally on Martian slopes. They provide distinct surface markers that are thought to result from the activity of subsurface water. Reliable characterizations of RSL activity are needed to test this...

Briefs: Information Technology
Extended Testability Analysis (ETA) Tool V8.0

An assessment of a system’s safety requirements is required early in the design process when cost and time impacts are minimal. These requirements include fault detection, failure isolation, and failure recovery. Systems engineering groups at NASA have been exploring model-based products to better...

Application Briefs: Medical

Even university researchers play Xbox from time to time. Not all mechanical engineers, however, have the idea to use the popular gaming console’s camera to assist doctors in...

Briefs: Test & Measurement

A key goal of NASA’s aeronautics research is to help the aircraft industry transition to low-carbon propulsion. Many potential power architectures for electric...

Articles: Aerospace

When global food prices spiked dramatically in late 2007 and into 2008, with the costs of many basic dietary staples doubling or even tripling, protests and riots...

Briefs: Electronics & Computers
Vibration Damping Circuit Card Assembly

NASA’s Marshall Space Flight Center has developed a particle impact damper (NASA damper) that can be used in circuit card assemblies to reduce vibrations encountered during space vehicle launch. The damper, filled with high-density metallic beads, is attached to printed circuit boards (PCBs) and printed...

Briefs: Mechanical & Fluid Systems
Ultra-Compact Heat Rejection System

Radiator panels are the baseline heat rejection approach for most space systems. This approach is sound, but requires a large amount of surface area to radiate the anticipated heat load. The large panels require support structures to hold them in place and prevent damage. These structures impact mass and cost....

Briefs: Manufacturing & Prototyping
A Statistically Based Approach to Broadband Liner Design and Assessment

The broadband component of fan noise has grown in relevance with the utilization of increased bypass ratio and advanced fan designs. Thus, while the attenuation of fan tones remains paramount, the ability to simultaneously reduce broadband fan noise levels has become more...

Briefs: Robotics, Automation & Control
Variable-Aperture Reciprocating Reed Valve

NASA’s Marshall Space Flight Center engineers have developed a new reed valve for controlling fluid flow back and forth between two chambers. The VARR valve provides two-way flow that is proportional to flow demand. As the pressure gradient builds on one side, the reed valve responds by opening an...

Briefs: Energy
Chassis Short Mitigation and Characterization Technique for the Multi-Mission Radioisotope Thermoelectric Generator

The radioisotope thermoelectric generator (RTG) is a flight-proven, capable source of power that reliably converts heat into electricity. NASA and the Department of Energy (DoE) have developed a new generation of such power systems...