Briefs: Materials
Probabilistic Multi-Factor Interaction Model for Complex Material Behavior

Complex material behavior is represented by a single equation of product form to account for interaction among the various factors. The factors are selected by the physics of the problem and the environment that the model is to represent. For example, different factors...

Long tool bits are undergoing development that can be stowed compactly until used as rock- or ground-penetrating probes actuated by ultrasonic/sonic mechanisms. These bits are...

Briefs: Mechanical & Fluid Systems
Compact Rare Earth Emitter Hollow Cathode

A compact, high-current, hollow cathode utilizing a lanthanum hexaboride (LaB6) thermionic electron emitter has been developed for use with high-power Hall thrusters and ion thrusters....

This innovation has been developed to improve the resolutions of future spacebased active and passive microwave antennas for earth-science remote...

Briefs: Mechanical & Fluid Systems
Rapid Active Sampling Package

A field-deployable, battery-powered Rapid Active Sampling Package (RASP), originally designed for sampling strong materials during lunar and planetary missions, shows strong utility for terrestrial geological use. The technology is proving to be simple and effective for sampling and processing materials of strength....

Briefs: Mechanical & Fluid Systems
Miniature Lightweight Ion Pump

This design offers a larger surface area for pumping of active gases and reduces the mass of the pump by eliminating the additional vacuum enclosure. There are three main components to this ion pump: the cathode and anode pumping elements assembly, the vacuum enclosure (made completely of titanium and used as the...

A method of relatively safe, compact, efficient recharging of a high-pressure room-temperature gas supply has been proposed. In this method, the gas would be liquefied at the source...

A Raman lidar system for measuring the vertical distribution of water vapor in the atmosphere is located at the Table Mountain Facility (TMF) in California. Raman lidar systems for...

Global measurement of terrestrial snow cover is critical to two of the NASA Earth Science focus areas: (1) climate variability and change and (2) water and...

A method has been developed of computing bounds on the performance of a code comprised of two linear binary codes generated by two encoders serially concatenated through an...

Briefs: Information Technology
Mission Reliability Estimation for Repairable Robot Teams

A mission reliability estimation method has been designed to translate mission requirements into choices of robot modules in order to configure a multi-robot team to have high reliability at minimal cost. In order to build cost- effective robot teams for long-term missions, one must be...

Briefs: Information Technology
Algorithm for Stabilizing a POD-Based Dynamical System

This algorithm provides a new way to improve the accuracy and asymptotic behavior of a low-dimensional system based on the proper orthogonal decomposition (POD). Given a data set representing the evolution of a system of partial differential equations (PDEs), such as the Navier-Stokes...

Briefs: Information Technology
Parameterizing Coefficients of a POD-Based Dynamical System

A method of parameterizing the coefficients of a dynamical system based of a proper orthogonal decomposition (POD) representing the flow dynamics of a viscous fluid has been introduced. (A brief description of POD is presented in the immediately preceding article.) The present...

Briefs: Information Technology
Confidence-Based Feature Acquisition

Confidence-based Feature Acquisition (CFA) is a novel, supervised learning method for acquiring missing feature values when there is missing data at both training (learning) and test (deployment) time. To train a machine learning classifier, data is encoded with a series of input features describing each...

Briefs: Information Technology
Universal Decoder for PPM of any Order

A recently developed algorithm for demodulation and decoding of a pulse-position-modulation (PPM) signal is suitable as a basis for designing a single hardware decoding apparatus to be capable of...

Briefs: Information Technology
Metal Vapor Arcing Risk Assessment Tool

The Tin Whisker Metal Vapor Arcing Risk Assessment Tool has been designed to evaluate the risk of metal vapor arcing and to help facilitate a decision toward a researched risk disposition. Users can evaluate a system without having to open up the hardware. This process allows for investigating components...

Briefs: Manufacturing & Prototyping
Constant-Differential-Pressure Two-Fluid Accumulator

A two-fluid accumulator has been designed, built, and demonstrated to provide an acceptably close approximation to constant differential static pressure between two fluids over the full...

Products: Energy
Large Cell Ultracapacitors

Maxwell Technologies Inc. (San Diego, CA) has introduced its new K2 series large cell BOOSTCAP ultracapacitors. About the size of a soda can, the K2 series BOOSTCAP cells operate at 2.7 volts and incorporate design...

Briefs: Energy
Power Generator With Thermo-Differential Modules

A new thermoelectric power generator from Johnson Space Center consists of an oven box and a solar cooker/solar reflector unit. The solar reflector concentrates sunlight into heat and transfers the heat into the oven box via a heat pipe.

NASA’s Jet Propulsion Laboratory has proposed a scheme for generating electric power from rivers and from ocean currents, tides, and waves that not entail the high maintenance...

Briefs: Green Design & Manufacturing
Nitrous Oxide/Paraffin Hybrid Rocket Engines

Nitrous oxide/paraffin (N2OP) hybrid rocket engines have been invented as alternatives to other rocket engines — especially those that burn granular, rubbery solid fuels consisting largely of hydroxyl-terminated polybutadiene (HTPB). Originally intended for use in launching spacecraft,...

Application Briefs: Robotics, Automation & Control
High-Flex Cable Assembly to Aid Robot Arm in Mars Exploration Program
High-Flex
Cables Cicoil Corp.
Valencia, CA 661-295-1295
www.cicoil.com

Cicoil has provided a custom-formed high-flex cable to the Mars Science...

TTEthernet
TTTech North America
Carlsbad, CA
760-603-9393
www.tttech.com

TTEthernet, a high-bandwidth databus developed by TTTech and Honeywell, will...

The automotive industry has faced hardships in recent times, but it can and will survive by renewing itself through innovation. After enduring a $14.6 billion loss in 2008, Ford...

Dr. Gary Hunter, who joined NASA in 1990, is an expert in the design, fabrication, and testing of sensors, especially...

Podcasts
Dr. Gary Hunter, Intelligence Systems Hardware Lead and Technical Lead of Chemical Sensors, Sensors and Electronics Branch

Dr. Gary Hunter, who joined NASA in 1990, is an expert in the design, fabrication, and testing of sensors, especially chemical species gas sensors. In 1995 and 2005, he led the development of sensor systems that won...

Products
HP Z200

Hewlett-Packard, Palo Alto, CA, has introduced the HP Z200 workstation computer for engineers and designers using CAD software. Also introduced are two monitors: the HP ZR22w and HP ZR24w Performance Displays. The HP Z200 offers...

NASA Tech Needs
Developing a Commercial Nanoionics Switch for RF Applications

The Antenna and Optical Systems Branch at NASA’s Glenn Research Center is working on many innovations in nanotechnology for use in communications applications. One such emerging field of nanotechnology receiving significant attention for its promising results is nanoionics....

Techs for License
PicoEndo Tethered Endoscope

Stevrin & Partners

The PicoEndo endoscope is the smallest tethered endoscope in the world (4.5mm × 12.0mm). It is also inexpensive enough to use and discard. The PicoEndo system is applicable to medical tasks such as photographing the surface of the esophagus, and to applications in any industry that needs...

Videos