An instrument measures electrical properties of relatively dry soils to determine their liquid water and/or ice contents. Designed as a prototype of instruments for measuring the...

In 1924, General Motors president Alfred P. Sloan Jr. devised annual model-year design changes in order to maintain unit sales. Body shapes faced cosmetic changes every year, whether...

An automated procedure has been developed to derive relevant factors, which can increase the ability to produce objective, repeatable methods for determining aerodynamic surface...

Briefs: Software
DSN Data Visualization Suite

The DSN Data Visualization Suite is a set of computer programs and reusable Application Programming Interfaces (APIs) that assist in the visualization and analysis of Deep Space Network (DSN) spacecraft-tracking data, which can include predicted and actual values of downlink frequencies, uplink frequencies, and...

A method for real-time detection of dust devils at a given location is based on identifying the abrupt, temporary decreases in atmospheric pressure that are characteristic of dust...

In a proposed coding-and-modulation scheme, a high-rate binary data stream would be processed as follows:

Maple Systems, Everett, WA, has released three Gold Series panel PCs in contoured 10", 15", and 17" fanless models. All models feature Intel processors and are preloaded with Windows XP Pro. The fully functional PCs run...

Dr. Drake Deming, former Chief of Goddard Space Flight Center’s Planetary Systems Laboratory, currently serves as Senior Scientist...

A prototype decoder for a serially concatenated pulse position modulation (SCPPM) code has been implemented in a field-programmable gate array (FPGA). At the time of this...

The figure shows a biasable subharmonic mixer designed to operate in the frequency range from 520 to 600 GHz. This mixer is a prototype of low-power mixers needed for development of...

An effort to develop large-aperture, wide-angle-scanning reflectarray antennas for microwave radar and communication systems is underway. In an antenna of this type as envisioned,...

Briefs: Information Technology
Presentation Extensions of the SOAP

A set of extensions of the Satellite Orbit Analysis Program (SOAP) enables simultaneous and/or sequential presentation of information from multiple sources. SOAP is used in the aerospace community as a means of collaborative visualization and analysis of data on planned spacecraft missions. The following...

Application Briefs: Electronics & Computers
Supercomputer Aids NASA’s Journey to the Moon and Mars
SGI® Altix® ICE system
Silicon Graphics, Inc. (SGI)
Sunnyvale, CA
800-800-7441
www.sgi.com

SGI has supplied NASA's Advanced Supercomputing facility at NASA Ames...

Application Briefs: Electronics & Computers
Radiation Detection Hardware Part of Living With a Star Experiment
Space dosimeter card
Space Micro Inc.
San Diego, CA
858-332-0700
www.spacemicro.com

Space Micro’s space dosimeter card has been successfully integrated at NASA Goddard Space Flight Center (Greenbelt, MD) into the Living with a Star (LWS), Space...

Briefs: Software
Symbolic Processing Combined With Model-Based Reasoning

A computer program for the detection of present and prediction of future discrete states of a complex, real-time engineering system utilizes a combination of symbolic processing and numerical model-based reasoning. One of the biggest weaknesses of a purely symbolic approach is that it...

NASA Tech Needs
Highly Power-Aware Digital Extravehicular Activity (EVA) Radio

As NASA embarks upon deep-space human exploration, the next-generation extravehicular activity (EVA) radio will be a pivotal technology and an integral part of lunar surface systems success. It facilitates surface operations, enables crew mobility, and supports point to multi-point...

Briefs: Software
Spreadsheets for Analyzing and Optimizing Space Missions

XCALIBR (XML Capability Analysis LIBRary) is a set of Extensible Markup Language (XML) database and spreadsheet-based analysis software tools designed to assist in technology-return-on-investment analysis and optimization of technology portfolios pertaining to outer- space missions....

Briefs: Manufacturing & Prototyping
Alternative Packaging for Back-Illuminated Imagers

An alternative scheme has been conceived for packaging of silicon- based back-illuminated, back- side-thinned complementary metal oxide/semiconductor (CMOS) and charge-coupled-device...

Briefs: Manufacturing & Prototyping
Diamond Machining of an Off-Axis Biconic Aspherical Mirror

Two diamond-machining methods have been developed as part of an effort to design and fabricate an off-axis, biconic ellipsoidal, concave aluminum mirror for an infrared spectrometer at the Kitt Peak National Observatory. Beyond this initial application, the methods can be expected to...

Briefs: Manufacturing & Prototyping
Laser Ablation Increases PEM/Catalyst Interfacial Area

An investigational method of improving the performance of a fuel cell that contains a polymer-electrolyte membrane (PEM) is based on the concept of roughening the surface of the PEM,...

Lightweight composites of RP46 polyimide and glass fibers have been found to be useful as extraordinarily fire-resistant electrical-insulation materials. RP46 is a polyimide of the...

Briefs: Materials
Damage Detection and Self-Repair in Inflatable/Deployable Structures

Inflatable/deployable structures are under consideration for applications as varied as expansion modules for the International Space Station to destinations for space tourism to habitats for the lunar surface. Monitoring and maintaining the integrity of the physical structure...

Ceramic strain gauges in which the strain-sensitive electrically conductive strips made from nanocomposites of noble metal and indium tin oxide (ITO) are being developed for use in gas turbine...

Briefs: Mechanical & Fluid Systems
Quick-Connect Windowed Non-Stick Penetrator Tips for Rapid Sampling

Standard penetrator sampling systems were designed in order to allow for sampling via penetrators to produce a full set of sample acquisitions including volatile liquids, fine powders, and solid fragments. A gravity harpoon sampler has been designed with a removable tip and a...

Briefs: Mechanical & Fluid Systems
Prediction of B-Pillar Failure in Automobile Bodies

The B-pillar is an important load-carrying component of any automobile body. It is a primary support structure for the roof, and is typically a thin-walled, spot-welded, closed-section...

Briefs: Mechanical & Fluid Systems
Modeling Unsteady Cavitation and Dynamic Loads in Turbopumps

A computational fluid dynamics (CFD) model that includes representations of effects of unsteady cavitation and associated dynamic loads has been developed to increase the accuracy of simulations of the performances of turbopumps. Although the model was originally intended to serve as a...

A continuous-flow system utilizes microwave heating to sterilize water and to thermally inactivate endotoxins produced in the sterilization process. The system is designed for use in...

A method of discriminating between spore-forming and non-spore-forming bacteria is based on a combination of simultaneous sporulation-specific and non-sporulation-specific quantitative...

It has been proposed to modify the basic structure of an nBn infrared photodetector so that a plain electron-donor-type (n-type) semiconductor contact layer would be replaced by a...

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