Special Coverage

Lightweight, Flexible Thermal Protection System for Fire Protection
High-Precision Electric Gate for Time-of-Flight Ion Mass Spectrometers
Polyimide Wire Insulation Repair System
Distributed Propulsion Concepts and Superparamagnetic Energy Harvesting Hummingbird Engine
Wet Active Chevron Nozzle for Controllable Jet Noise Reduction
Magnetic Relief Valve
Active Aircraft Pylon Noise Control System
Unmanned Aerial Systems Traffic Management

Terrestrial Observation and Prediction System (TOPS)

Ames Research Center, Moffett Field, California TOPS is a modeling software system that integrates data from satellite, aircraft, and ground sensors, and weather/climate models with application models to expeditiously produce operational nowcasts and forecasts of ecological conditions. TOPS allows determination of the options for different socio-economic and resource management approaches to dealing with fluctuations within our biosphere, and will help in mitigating potential negative impacts.

Posted in: Briefs, Green Design & Manufacturing, Physical Sciences, Simulation and modeling, Computer software and hardware


Images of Change for iPad

NASA’s Jet Propulsion Laboratory, Pasadena, California Images of Change provides a user-friendly mobile interface for exploring an extensive gallery of land-based and space-based images showing dramatic change over time on Earth. Hosted on NASA’s Global Climate Change website, Images of Change is designed to raise awareness of climate change, inspire curiosity and interest in the programs that create the images, and highlight the importance of global climate change research.

Posted in: Briefs, Green Design & Manufacturing, Physical Sciences, Imaging and visualization


Characteristics of the Spliced Kennedy Space Center Doppler Radar Wind Profiler Database

Marshall Space Flight Center, Alabama NASA relies on the Natural Environments (NE) Branch located at Marshall Space Flight Center (MSFC) to provide databases that represent the wind magnitudes and wind changes expected on day-of-launch (DOL) for vehicle programs that MSFC NE supports. MSFC NE has traditionally utilized weather balloon measurements to generate the wind profiles used in DOL loads and trajectory simulations. However, balloon measurement archives have three limitations in that (1) they do not contain a large enough sample to adequately represent the wind environment at extreme percentiles, (2) balloons could misrepresent the aloft wind environment due to their rise rate and drift characteristics, and (3) the Space Shuttle Program’s operational requirements significantly drove the atmosphere databases’ development. To help mitigate these limitations, MSFC NE used the 50-MHz Doppler Radar Wind Profiler (DRWP) at Kennedy Space Center (KSC) to validate balloon measurements on DOL during the SSP.

Posted in: Briefs, Green Design & Manufacturing, Physical Sciences, Radar, Test equipment and instrumentation


Watching Alloys Change Could Lead to Better Metals

If you put a camera in the ice machine and watched water turn into ice, the process would look simple. But the mechanism behind liquids turning to solids is actually quite complex, and understanding it better could improve design and production of metals. A recent investigation aboard the International Space Station (ISS) involved experiments using transparent alloys to observe microstructures that form at the point the material solidifies.

Posted in: UpFront, Materials, Physical Sciences


Hydrogen Peroxide for Microbial Growth Control in Space Potable Water Systems

This on-demand generator can provide the needed hydrogen peroxide levels for microbial growth control in potable water holding tanks and waterlines. Marshall Space Flight Center, Alabama NASA uses a biocide to prevent contamination of astronaut drinking water with harmful microorganisms. Concerns have arisen over existing biocides — that they’re inadequately effective, and may have toxic side effects when consumed. New microbial control methods are a priority. This need is addressed by using an electrochemical reactor for on-demand generation of hydrogen peroxide (H2O2) solutions. The device uses onboard resources only. The method eliminates the need for resupply items (reducing launch costs), and reduces toxicity risk.

Posted in: Briefs, Aerospace, Green Design & Manufacturing, Physical Sciences, Containers


Method of Water Regeneration From Waste and Cascade Distillation

Lyndon B. Johnson Space Center, Houston, Texas Effective recovery of potable water from various streams and sources of wastewater, seawater, or contaminated water is a significant task for securing existence of human beings in space, terrestrial, and marine environments. Efficient purification of the wastewater is also a very important task for protection of the global environment. The existing and known methods of recovery of clean water from the wastewater are technically complicated, have low energy efficiency, consume processing material, and are bulky, heavy, and not cost effective.

Posted in: Briefs, Green Design & Manufacturing, Recycling Technologies, Physical Sciences, Water reclamation


Optical Fiber for Solar Cells

These materials enable new solar-powered devices that are small, lightweight, and can be used without connection to existing electrical grids. Ames Research Center, Moffett Field, California Polymeric and inorganic semiconductors offer relatively high quantum efficiencies, and are much less expensive and versatile to fabricate than non-amorphous silicon wafers. An optical fiber and cladding can be designed and fabricated to confine light for transport within ultraviolet and near-infrared media, using evanescent waves, and to transmit visible wavelength light for direct lighting.

Posted in: Briefs, Energy, Energy Storage, Solar Power, Materials, Fiber Optics, Physical Sciences, Solar energy, Fibers, Polymers, Semiconductors


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