Keyword: Sun and solar

Briefs: Lighting

A new versatile measurement system devised by researchers at the National Institute of Standards and Technology (NIST) accurately and quickly measures the electric power...

Application Briefs: Lighting

With the help of Panasonic LED and OLED lighting fixtures, the Japanese Ministry of the Environment is slashing overall energy use at a public station by 25 percent, with a...

Products: Lighting

EYE Lighting International of North America (Mentor, OH) recently introduced of its high-G, high-intensity onboard LED lighting system for high-speed crash test photography.

Briefs: Electronics & Computers
Inverted Three-Junction Tandem Thermophotovoltaic Modules

An InGaAs-based three-junction (3J) tandem thermophotovoltaic (TPV) cell has been investigated to utilize more of the blackbody spectrum (from a 1,100 °C general purpose heat source — GPHS) efficiently. The tandem consists of three vertically stacked subcells, a 0.74-eV InGaAs cell, a...

Briefs: Medical
Extreme Ionizing-Radiation-Resistant Bacterium

There is a growing concern that desiccation and extreme radiation-resistant, non-spore-forming microorganisms associated with spacecraft surfaces can withstand space environmental conditions and subsequent proliferation on another solar body. Such forward contamination would jeopardize future life...

Application Briefs: Electronics & Computers

Lockheed Martin Space Systems Advanced Technology Center (ATC) has completed delivery of hardware subsystems for NASA’s Magnetospheric Multiscale (MMS) Mission. The delivery...

Briefs: Software
SATPLOT for Analysis of SECCHI Heliospheric Imager Data

Determining trajectories of solar transients such as coronal mass ejections is not always easy. White light images from SECCHI’s (Sun Earth Connection Coronal and Heliospheric Investigation) heliospheric imagers are difficult to interpret because they represent a lineof- sight projection...

Application Briefs: Photonics/Optics

Tracking systems are included in more than one-third of new photovoltaic developments in Europe, but less than 10% in the US. If properly controlled, they can capture more energy from each panel than...

Research News: Lighting

Plastic electronics hold the promise of cheap, mass-produced devices. But plastic semiconductors have an important flaw – the electronic current is influenced by “charge...

Briefs: Mechanical & Fluid Systems

There are two conventional types of hinges for in-space deployment applications. The first type is mechanically deploying hinges. A typical mechanically deploying hinge is usually composed of several tens...

Briefs: Materials

New and improved blocking filters (see figure) have been developed for microcalorimeters on several mission payloads, made of high-transmission polyimide support mesh, that...

Briefs: Information Technology
General Methodology for Designing Spacecraft Trajectories

A methodology for designing spacecraft trajectories in any gravitational environment within the solar system has been developed. The methodology facilitates modeling and optimization for problems ranging from that of a single spacecraft orbiting a single celestial body to that of a...

Application Briefs: Mechanical & Fluid Systems

The NASA-sponsored space exploration project, PICTURE (Planet Imaging Concept Testbed Using a Rocket Experiment), seeks to obtain a direct image of an extra-solar...

Briefs: Physical Sciences
Versatile Controller for Infrared Lamp and Heater Arrays

A paper describes a modular design for new controllers for infrared heating during cruise stage solar thermal vacuum test of the Mars Science Laboratory. The controllers had to be easy to use and maintain, used with a wide variety of different control schemes, and made using commercial...

Research News: Lighting

Ateam of physicists headed by Dr. Vinod M. Menon, who is a member of The City University of New York Photonics Initiative and teaches at Queens College, has discovered...

Briefs: Lighting
New Technique Allows Simulation of Noncrystalline Materials

A multidisciplinary team of researchers at MIT and in Spain has found a new mathematical approach to simulating the electronic behavior of noncrystalline materials, which may eventually play an important part in new devices including solar cells, organic LED lights, and printable,...

Articles: Electronics & Computers

Today there are multiple devices available for harnessing solar energy. Each device offers a different set of characteristics. Wafer-based devices consist of mono or...

Briefs: Semiconductors & ICs
Thermally Resilient, Broadband Optical Absorber From UV to IR Derived From Carbon Nanostructures

Optical absorber coatings have been developed from carbon-based paints, metal blacks, or glassy carbon. However, such materials are not truly black and have poor absorption characteristics at longer wavelengths. The blackness of such coatings is...

Briefs: Physical Sciences
Dual Double-Wedge Pseudo-Depolarizer With Anamorphic PSF

A polarized scene, which may occur at oblique illumination angles, creates a radiometric signal that varies as a function of viewing angle. One common optical component that is used to minimize such an effect is a polarization scrambler or depolarizer. As part of the CLARREO mission, the...

Briefs: Physical Sciences
In Situ Potassium-Argon Geochronology Using Fluxed Fusion and a Double Spike

A document highlights an Li-based fluxing agent that enables sample fusion and quantitative Ar-release at relatively low temperatures (900–1,000 ºC), readily achievable with current flight resistance furnace designs. A solid, double spike containing known quantities...

Articles: Aerospace

The Federal Aviation Administration (FAA) reported that last year, U.S. and foreign air carriers transported an estimated 161.8 million passengers between the United States and the...

Application Briefs: Materials

A high-performance thin-film product created specifically for NASA’s Jet Propulsion Laboratory in Pasadena, CA, is being used to ensure the electrical currents from the Mars Rover Curiosity’s...

Briefs: Physical Sciences
Miniaturized Laser Heterodyne Radiometer (LHR) for Measurements of Greenhouse Gases in the Atmospheric Column

This passive laser heterodyne radiometer (LHR) instrument simultaneously measures multiple trace gases in the atmospheric column including carbon dioxide (CO2) and methane (CH4), and resolves their concentrations at different altitudes....

Briefs: Electronics & Computers
Goldstone Solar System Radar Waveform Generator

Due to distances and relative motions among the transmitter, target object, and receiver, the time-base between any transmitted and received signal will undergo distortion. Pre-distortion of the transmitted signal to compensate for this time-base distortion allows reception of an undistorted...

Briefs: Lighting

Nanowires — microscopic fibers that can be “grown” in a lab — have a variety of potential applications, including LEDs and sensors. A team of MIT researchers...

Briefs: Software
Virtual Machine Language 2.1

VML (Virtual Machine Language) is an advanced computing environment that allows spacecraft to operate using mechanisms ranging from simple, timeoriented sequencing to advanced, multicomponent reactive systems.

Briefs: Software
Pandora Operation and Analysis Software

Pandora Operation and Analysis Software controls the Pandora Sun- and sky-pointing optical head and built-in filter wheels (neutral density, UV bandpass, polarization filters, and opaque). The software also controls the attached spectrometer exposure time and thermoelectric cooler to maintain the...

Briefs: Materials
Materials That Enhance Efficiency and Radiation Resistance of Solar Cells

A thin layer (≈10 microns) of a novel “transparent” fluorescent material is applied to existing solar cells or modules to effectively block and convert UV light, or other lower solar response waveband of solar radiation, to visible or IR light that can be more...

Briefs: Physical Sciences
Lunar Navigation Determination System — LaNDS

A portable comprehensive navigational system has been developed that both robotic and human explorers can use to determine their location, attitude, and heading anywhere on the lunar surface independent of external infrastructure (needs no Lunar satellite network, line of sight to the Sun or Earth,...