Articles: Photonics/Optics

While it may appear state-of-the-art on the surface, fiber optic technology is a fairly simple method of conducting light that has been around for some time. The principle of...

Articles: Lighting Technology

Solid-state lighting (SSL) is rapidly emerging as a major segment of the lighting fixture industry. What was once a simple electrical device has now...

Articles: Lighting

Solid-state lighting (SSL) has been identified as a technology innovation that can significantly impact the future of lighting solutions that will meet new U.S. energy efficiency standards for...

Who's Who: Aerospace

Dr. Jim Green began his NASA career in 1980 at Marshall Space Flight Center’s Magnetospheric Physics Branch where he developed and managed the Space...

Application Briefs: Test & Measurement
New Shepard rocket-propelled vehicle Blue Origin
Kent, WA
253-872-0411 www.blueorigin.com

Blue Origin has received funding from NASA’s Commercial Crew Development (CCDev)...

Application Briefs: Information Technology
Enterprise application and information technology services
Science Applications International Corp. (SAIC)
McLean, VA
703-676-4300
www.saic.com

SAIC...

Application Briefs: Information Technology
IT Services Support NASA Scientists and Engineers
Information technology services
DB Consulting Group
Silver Spring, MD
301-589-4020
www.dbconsultinggroup.com

DB Consulting Group provides NASA’s Glenn Research Center (GRC) in Cleveland, OH with a variety of professional, administrative, computational, and engineering...

Application Briefs: Robotics, Automation & Control

Endo Tools Therapeutics (ETT) is a medical device company based in Brussels, Belgium that was established in 2008. The company was formed after an innovative research...

Application Briefs: Sensors/Data Acquisition
Motion Components Optimize Performance of Liquid Chromatography System

Pricing pressures, intense competition, and strict regulatory demands are challenging scientists and researchers in the fast-growing, highly-regulated pharmaceutical, life science, biochemical, industrial, and environmental industries to make important breakthroughs faster...

Application Briefs: Lighting

The lighting needs at the 460,000-square foot headquarters facility of Maines Paper and Food Service, Inc., a food distributor serving customers in 35 states, were recently re-evaulated....

Application Briefs: Lighting

A Manchester, NH T.J.Maxx shopping plaza parking lot has been retrofitted with BetaLED luminaires. CBT Development of Greenland, NH was incurring high costs for parking lot maintenance from...

Briefs: Physical Sciences
Multi-Segment Radius Measurement Using an Absolute Distance Meter Through a Null Assembly

This system was one of the test methods considered for measuring the radius of curvature of one or more of the 18 segmented mirrors that form the 6.5 m diameter primary mirror (PM) of the James Webb Space Telescope (JWST). The assembled telescope will be...

Briefs: Physical Sciences
Fiber-Optic Magnetic-Field-Strength Measurement System for Lightning Detection

A fiber-optic sensor system is designed to measure magnetic fields associated with a lightning stroke. Field vector magnitudes are detected and processed for multiple locations. Since physical limitations prevent the sensor elements from being located in close...

Briefs: Physical Sciences
Non-Contact Thermal Properties Measurement With Low-Power Laser and IR Camera System

As shown by the Phoenix Mars Lander’s Thermal and Electrical Conductivity Probe (TECP), contact measurements of thermal conductivity and diffusivity (using a modified flux-plate or line-source heat-pulse method) are constrained by a number of factors. Robotic...

Briefs: Physical Sciences
Photocatalytic Active Radiation Measurements and Use

Photocatalytic materials are being used to purify air, to kill microbes, and to keep surfaces clean. A wide variety of materials are being developed, many of which have different abilities to absorb various wavelengths of light. Material variability, combined with both spectral illumination...

Briefs: Physical Sciences
Computer Generated Hologram System for Wavefront Measurement System Calibration

Computer Generated Holograms (CGHs) have been used for some time to calibrate interferometers that require nulling optics. A typical scenario is the testing of aspheric surfaces with an interferometer placed near the paraxial center of curvature. Existing CGH...

Briefs: Electronics & Computers
High-Performance Wireless Telemetrye

Prior technology for machinery data acquisition used slip rings, FM radio communication, or non-real-time digital communication. Slip rings are often noisy, require much space that may not be available, and require access to the shaft, which may not be possible. FM radio is not accurate or stable, and is...

Briefs: Electronics & Computers
Telemetry-Based Ranging

A telemetry-based ranging scheme was developed in which the downlink ranging signal is eliminated, and the range is computed directly from the downlink telemetry signal. This is the first Deep Space Network (DSN) ranging technology that does not require the spacecraft to transmit a separate ranging signal. By contrast,...

Briefs: Electronics & Computers

A complementary metal oxide/semiconductor (CMOS) image detector now undergoing development is designed to exhibit less cross-talk and greater full-well capacity than do prior CMOS...

Briefs: Software
JWST Wavefront Control Toolbox

A Matlab-based toolbox has been developed for the wavefront control and optimization of segmented optical surfaces to correct for possible misalignments of James Webb Space Telescope (JWST) using influence functions. The toolbox employs both iterative and non-iterative methods to converge to an optimal solution by...

Briefs: Software
Java Image I/O for VICAR, PDS, and ISIS

This library, written in Java, supports input and output of images and metadata (labels) in the VICAR, PDS image, and ISIS-2 and ISIS-3 file formats. Three levels of access exist.

Briefs: Software
X-Band Acquisition Aid Software

The X-band Acquisition Aid (AAP) software is a low-cost acquisition aid for the Deep Space Network (DSN) antennas, and is used while acquiring a spacecraft shortly after it has launched. When enabled, the acquisition aid provides corrections to the antenna-predicted trajectory of the spacecraft to compensate for...

Briefs: Manufacturing & Prototyping
Range 7 Scanner Integration With PaR Robot Scanning System

An interface bracket and coordinate transformation matrices were designed to allow the Range 7 scanner to be mounted on the PaR Robot detector arm for scanning the heat shield or other object placed in the test cell. A process was designed for using Rapid Form XOR to stitch data from...

Briefs: Manufacturing & Prototyping
High-Operating-Temperature Barrier Infrared Detector With Tailorable Cutoff Wavelength

A mid-wavelength infrared (MWIR) barrier photodetector is capable of operating at higher temperature than the prevailing MWIR detectors based on InSb. The standard high-operating-temperature barrier infrared detector

(HOT-BIRD) is made with an InAsSb...

Briefs: Manufacturing & Prototyping
Methods of Antimicrobial Coating of Diverse Materials

Methods of coating diverse substrate materials with antimicrobial agents have been developed. Originally intended to reduce health risks to astronauts posed by pathogenic microorganisms that can grow on surfaces in spacecraft, these methods could also be used on Earth — for example, to...

Briefs: Manufacturing & Prototyping
Antimicrobial-Coated Granules for Disinfecting Water

Methods of preparing antimicrobial-coated granules for disinfecting flowing potable water have been developed. Like the methods reported in the immediately preceding article, these methods involve chemical preparation of substrate surfaces (in this case, the surfaces of granules) to enable...

Briefs: Materials
A Model of Reduced Kinetics for Alkane Oxidation Using Constituents and Species for N-Heptane

The reduction of elementary or skeletal oxidation kinetics to a subgroup of tractable reactions for inclusion in turbulent combustion codes has been the subject of numerous studies. The skeletal mechanism is obtained from the elementary mechanism by...

Briefs: Materials
Thermally Conductive Tape Based on Carbon Nanotube Arrays

To increase contact conductance between two mating surfaces, a conductive “tape” has been developed by growing dense arrays of carbon nanotubes (CNTs, graphite layers folded into cylinders) on both sides of a thermally conductive metallic foil. When the two mating surfaces are brought...

Briefs: Materials
Lightweight, Ultra-High-Temperature, CMC-Lined Carbon/Carbon Structures

lished engineering material used extensively in aerospace. The beneficial properties of C/C include high strength, low density, and toughness. Its shortcoming is its limited usability at temperatures higher than the oxidation temperature of carbon — approximately 400 °C....

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