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Briefs: Physical Sciences
Partially Transparent Petaled Mask/Occulter for Visible-Range Spectrum
The presence of the Poisson Spot, also known as the spot of Arago, has been known since the 18th century. This spot is the consequence of constructive interference of light diffracted by the edge of the obstacle where the central position can be determined by symmetry of the...
Briefs: Information Technology
Aircraft performance can be compromised when ice forms on aircraft surfaces such as the wings, nacelles, sensors, and control systems. This can cause safety issues due to significant changes in...
Briefs: Information Technology
Educational NASA Computational and Scientific Studies (enCOMPASS)
Educational NASA Computational and Scientific Studies (enCOMPASS) is an educational project of NASA Goddard Space Flight Center aimed at bridging the gap between computational objectives and needs of NASA’s scientific research, missions, and projects, and academia’s latest...
Briefs: Information Technology
Coarse-Grain Bandwidth Estimation Scheme for Large-Scale Network
A large-scale network that supports a large number of users can have an aggregate data rate of hundreds of Mbps at any time. High-fidelity simulation of a large-scale network might be too complicated and memory-intensive for typical commercial-off-the-shelf (COTS) tools. Unlike a...
Briefs: Information Technology
Detection of Moving Targets Using Soliton Resonance Effect
The objective of this research was to develop a fundamentally new method for detecting hidden moving targets within noisy and cluttered data-streams using a novel “soliton resonance” effect in nonlinear dynamical systems.
Briefs: Mechanical & Fluid Systems
High-Efficiency Nested Hall Thrusters for Robotic Solar System Exploration
This work describes the scaling and design attributes of Nested Hall Thrusters (NHT) with extremely large operational envelopes, including a wide range of throttleability in power and specific impulse at high efficiency (>50%). NHTs have the potential to provide the game...
Briefs: Photonics/Optics
High-Voltage Clock Driver for Photon-Counting CCD Characterization
A document discusses the CCD97 from e2v technologies as it is being evaluated at Goddard Space Flight Center’s Detector Characterization Laboratory (DCL) for possible use in ultra-low background noise space astronomy applications, such as Terrestrial Planet Finder Coronagraph...
Briefs: Information Technology
Development of the Code RITRACKS
A document discusses the code RITRACKS (Relativistic Ion Tracks), which was developed to simulate heavy ion track structure at the microscopic and nanoscopic scales. It is a Monte- Carlo code that simulates the production of radiolytic species in water, event-by-event, and which may be used to simulate tracks and...
Applications: Medical
Worldwide an estimated 185 million people use a wheelchair daily. A company based in Auckland, New Zealand, has developed an innovative robotic technology that helps people with mobility...
Articles: Motion Control
Fundamentally, a servo system can perform no more accurately than the accuracy of the feedback device controlling it. In addition, errors in speed or position can be introduced into the system by the...
Application Briefs: Robotics, Automation & Control
Special care needs to be taken when handling delicate materials used in medical applications. Small diameters provide increased flexibility needed for long-flex-life applications such as cardiac catheter wires. Many...
Products: Motion Control
The i-series planetary gearboxes from Groschopp (Sioux Center, IA) are available with AC, PMDC, and brushless motors, and are made of cast aluminum. They are offered with up to three stages of steel cut or optional plastic gears,...
Products: Robotics, Automation & Control
CD-adapco (Melville, NY) offers two connected simulation programs, SPEED and STAR-CCM+, for machine design. The SPEED tool is used to design motors, generators, and alternators; STAR-CCM+ is a heat transfer and thermal...
Products: Motion Control
Warner Linear (Belvidere, IL) has announced the ITrack linear actuators for light- and medium-duty applications where parallel motor type actuators won’t fit in limited space requirements. The actuators feature a release...
Products: Robotics, Automation & Control
Reell Precision Manufacturing (St. Paul, MN) offers the TI-100 and TI-200 Series torque control hinges that provide pivoting capabilities without the standard appearance of conventional hinges. Depending on model, the...
Products: Motion Control
Applimotion (Loomis, CA) has introduced custom gearmotors for high-torque, low-speed, and low-profile applications. The assemblies combine gearing and direct drive frameless motor kits. The ULT, UTH, and UTS low-profile frameless...
Products: Robotics, Automation & Control
Lin Engineering (Morgan Hill, CA) offers the R1025 stepper motor driver that can be used with stepper motors ranging from NEMA 8 to NEMA 42. The driver is capable of output currents ranging from 0.8 to 10 amps peak while...
Products: Motion Control
Designed for air seats, light-duty air suspension, and other mobile applications, the Thomas 135 Series DC WOB-L® compressor from Thomas Division, a Gardner Denver Company (Sheboygan, WI), is a compact, lightweight...
Products: Motion Control
Measurement Specialties (Hampton, VA) has introduced a rugged, triaxial DC accelerometer for steady-state, low-g vibration measurements and high-g transient shock measurements. The piezoresistive, MEMSbased Model 3803A provides...
Products: Motion Control
Heidenhain Corp. (Schaumburg, IL) offers the Leine & Linde DRIVE-CLiQ encoder platform for operation in harsh drive environments where they are exposed to vibration, shock, and mechanical loads. The encoder can be installed to the...
Products: Motion Control
HBM (Marlborough, MA) offers the T40B and T40FM torque transducers that include an integrated speed measurement system. They are designed to work in harsh environments such as those that contain humidity, condensation, dust,...
Products: Robotics, Automation & Control
Zero-Max (Plymouth, MN) offers Roh’lix® linear actuators made from stainless steel for use where cleanliness is a priority. Used to convert rotary motion to linear travel, the actuators carry loads at speeds up to 70 inches...
Products: Motion Control
The PlanarDL-series stages from Aerotech (Pittsburgh, PA) are available in nine different travel and performance configuration applications ranging from high-accuracy surface profilometry to high-speed semiconductor and LED...
Articles: Sensors/Data Acquisition
While charge-coupled device (CCD) and complementary metal-oxide semiconductor (CMOS) sensors perform similar functions — collecting light (photons) and converting those into...
Application Briefs: Aerospace
Aurora Flight Sciences delivered a completed Space Suit Simulator (S3) to NASA following the successful completion of a Phase II Small Business Innovation Research (SBIR) effort.
Application Briefs: Aerospace
The renovated Payload Operations Integration Center, part of the Huntsville, AL-based Marshall Space Flight Center, features a new video wall. The wall includes a 2 × 12 array of monitors that uses RGB...
Application Briefs: Aerospace
Aerojet Rocketdyne, a GenCorp company, has shipped the first set of four solar electric propulsion thrusters to Lockheed Martin at NASA’s Stennis Space Center in Mississippi. Lockheed Martin will...
Articles: Materials
In the winter of 2009, Washington, DC workers faced the prospect of a difficult commute due to record-setting snowfall. But thousands of the city’s Metrorail riders found the public transportation...
Techs for License: Manufacturing & Prototyping
Zeolite Production Method Removes Soil Pollutants
X-type zeolites use an ion-exchange mechanism to capture and retain heavy metals for soil and water remediation. Zeolites are hydrated aluminosilicate minerals characterized by a three-dimensional open structure. Their cation exchange capacity (CEC), large surface area, and porosity allow the...
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