Briefs: Materials
Wider-Opening Dewar Flasks for Cryogenic Storage

Dewar flasks have been proposed as containers for relatively long-term (25 days) storage of perishable scientific samples or other perishable objects at a temperature of –175 °C. The refrigeration would be maintained through slow boiling of liquid nitrogen (LN2). For the purposes of...

Briefs: Materials
Supercapacitor Electrolyte Solvents With Liquid Range Below –80 °C

A previous NASA Tech Brief [“Low-Temperature Supercapacitors” (NPO-44386) NASA Tech Briefs, Vol. 32, No 7 (July 2008), page 32] detailed ongoing efforts to develop non-aqueous supercapacitor electrolytes capable of supporting operation at temperatures below commercially...

Briefs: Materials
Silicon Oxycarbide Aerogels for High-Temperature Thermal Insulation

A high-performance, silicon oxycarbide (SiOC) aerogel material is suitable for use as thermal insulation at temperatures approaching 1,200 °C. These aerogel composites were created using cost-effective and commercially available polymeric precursors (the polymethylsiloxane...

Briefs: Materials

New designs, and materials appropriate for such designs, are under investigation in an effort to develop coronagraph occulting masks having broad-band spectral characteristics...

Briefs: Physical Sciences
Turbulence and the Stabilization Principle

Further results of research, reported in several previous NASA Tech Briefs articles, were obtained on a mathematical formalism for postinstability motions of a dynamical system characterized by exponential divergences of trajectories leading to chaos (including turbulence).

Briefs: Physical Sciences

An improved thermal-gradient cloud condensation nucleus spectrometer (CCNS) has been designed to provide several enhancements over prior thermal- gradient counters, including fast response and...

Briefs: Physical Sciences

An improved mathematical model has been developed of the time dependence of buildup or decay of electric charge in a high-resistivity (nominally insulating) material. The model is...

Briefs: Physical Sciences
Terahertz Mapping of Microstructure and Thickness Variations

A noncontact method has been devised for mapping or imaging spatial variations in the thickness and microstructure of a layer of a dielectric material. The method involves (1) placement of the dielectric material on a metal substrate, (2) through-the-thickness pulse-echo measurements...

Briefs: Information Technology
Efficient Algorithmic Interleaver for Turbo Decoder

An efficient bit-interleaving algorithm for a turbo encoder differs from prior such algorithms in that it does not require memory to store permutation mappings and can work with constituent decoders that produce multiple bit reliabilities per decoding stage. The algorithm can be implemented in...

Briefs: Information Technology
Generalized Approach to Prognosis for an Engineering System

This new generalized approach to prognostics can provide an automated early failure prediction of an engineering system or its components, often in time to prevent occurrence of hard failures. This approach has been demonstrated in a proof-of-concept software prototype, shown to...

Briefs: Mechanical & Fluid Systems

A proposed mobile robot, denoted the amorphous rover, would vary its own size and shape in order to traverse terrain by means of rolling and/or slithering action. The amorphous rover was conceived as a robust, lightweight...

Briefs: Mechanical & Fluid Systems

The space-frame antenna is a conceptual antenna structure that would be lightweight, deployable from compact stowage, and capable of deforming itself to a size, shape, and orientation required for a specific use. The...

Briefs: Mechanical & Fluid Systems

The space-frame lunar lander is a conceptual spacecraft or spacecraftlike system based largely on the same principles as those of the amorphous rover and the space-frame antenna described in the two immediately...

Briefs: Mechanical & Fluid Systems

Traditionally, infrared (IR) space instruments have been focused by iterating with a number of different thickness shim rings in a thermal vacuum chamber until the focus meets requirements....

Briefs: Mechanical & Fluid Systems

This actuator design allows the extension and contraction of turnbuckle assemblies. It can be operated manually or remotely, and is extremely compact. It is ideal for turnbuckles that are hard to reach by...

Articles: Software

In our annual poll of executives at leading design and virtual prototyping software companies, we found that in difficult economic times, providing...

Application Briefs: Aerospace

Aircraft and airborne system development and modification
L-3 Communications Integrated Systems
Waco, TX
254-799-5533
www.l-3com.com/is/

Techs for License
Xyloy™ Injection-Molded Zinc/Aluminum Alloy

Cool Polymers

Xyloy™ is an injection-molded zinc/aluminum alloy processed in conventional plastic injection-molding equipment and molds. The Xyloy technology enables 3D netshaped metal parts right from the mold. Xyloy requires no carriers or binders, and — unlike die-cast metal parts...

Techs for License
Low-Cost Conductive Papers and Nonwovens for Consumer Goods

Kimberly-Clark

Inexpensive, easy-to-manufacture conductive papers, tissues, and nonwovens open new areas for resistively heated and disposable electronic consumer goods. The technology allows electric and electronic features previously too expensive for disposables to be built...

Tech Needs
Sensations and Materials for Lip Products

A company seeks unique materials to add to lip products for new lip sensations and experiences (such as cooling, warming, numbing, tingling, and flavors), solutions that can impart prolonged sensate experiences, and solutions that can impart not-yet-known sensations. Products should meet the following...

Tech Needs
Protecting Anodized Aluminum in a Highly Alkaline Environment

A company seeks to protect the surface of an aluminum product when exposed to the harsh alkaline environment inside a dishwasher. The product currently has a hard-anodized surface to protect against abrasion. The company seeks to avoid an exterior coating that can be abraded away....

NASA Tech Needs

Organic matrix composite materials have the potential for a significant mass reduction compared to metallic materials for aircraft and spacecraft, and have been a NASA focus for many years....

Products

Stealth.com (Stealth Computer), Woodbridge, ON, Canada, has introduced the Model LPC-395F rugged, fanless mini computer with up to 500 GBs of integrated removable storage. The mini PC includes frontloaded...

Who's Who: Materials

Dr. Luz Marina Calle earned her Ph.D. in chemistry from Ohio University and shortly thereafter became a professor of...

Application Briefs: Electronics & Computers

Embedded vetronics (vehicle electronics) subsystems for rugged deployed ground vehicles have long benefited from the reduced risk, faster time to market, and long lifecycle support...

Articles: Electronics & Computers

As the cooling challenges in embedded system applications have multiplied due to increased processing performance, smaller package and system footprints, and the requirement to operate in more...

Articles: Electronics & Computers

Because all solid state flash products are not created equal and flash storage is finding its way into more and more embedded computing applications, system designers should understand...

Articles: Electronics & Computers

Today’s rugged embedded computing industry demands the best of technology and reliability. Driven by requirements for higher performance solutions, platforms continually...

Products: Electronics & Computers

Extreme Engineering Solutions (Middleton, WI) has introduced XPedite7201, a conduction- or aircooled PrPMC/XMC module, targeting the Intel® Atom™ processor running at up to 1.6 GHz at under 10W. This card comes with PCI...

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