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Briefs: Mechanical & Fluid Systems
Autoignition Chamber for Remote Testing of Pyrotechnic Devices

The autoignition chamber (AIC) performs by remotely heating pyrotechnic devices that can fit the inner diameter of the tube furnace. Two methods, a cold start or a hot start, can be used with this device in autoignition testing of pyrotechnics. A cold start means extending a pyro -...

Briefs: Materials
Polyimide-Foam/Aerogel Composites for Thermal Insulation

Composites of specific types of polymer foams and aerogel particles or blankets have been proposed to obtain thermal insulation performance superior to those of the neat polyimide foams. These composites have potential to also provide enhanced properties for vibration dampening or acoustic...

Articles: Electronics & Computers

General purpose flexible circuit boards are those with electronic components that can be bent to fit in tight spaces. Most are just one or two layers thick and are meant for "flex to install"...

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Application Briefs: Sensors/Data Acquisition
Fine-grained alumina ceramic charge detector
Insaco
Quakertown, PA
215-536-3500
www.insaco.com

The Chandra X-Ray Observatory was launched into...

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Briefs: Mechanical & Fluid Systems

In a recently invented class of piezoelectric diaphragm pumps, the electrode patterns on the piezoelectric diaphragms are configured so that the electric fields in the diaphragms have...

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Briefs: Mechanical & Fluid Systems

Extremely lightweight, compact, non-invasive, rugged, relatively inexpensive strain- gauge transducers have been developed for use in measuring pressures of fluids in tubes. These gauges were...

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Briefs: Materials

Integrated multilayer insulation (IMLI) is being developed as an improved alternative to conventional multilayer insulation (MLI), which is more than 50 years old. A typical conventional MLI blanket comprises...

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Briefs: Materials

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...

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Briefs: Medical

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...

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Briefs: Physical Sciences
Non-Contact Measurement of Density and Thickness Variation in Dielectric Materials

This non-contact, single-sided terahertz electromagnetic measurement and imaging method characterizes micro-structural (e.g., spatially-lateral density) and thickness variation in dielectric (insulating) materials. This method was demonstrated for space shuttle...

Briefs: Materials

A methodology for developing complex multifunctional materials that consist of or contain polymer/ carbon-nanotube composites has been conceived. As used here, “multifunctional”...

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Articles: Photonics/Optics

Laser micromachining involves using light to remove material. Lasers can also be used in many other applications such as welding, marking, additive manufacturing and surface alteration, but these fall outside the...

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Briefs: Mechanical & Fluid Systems

A proposed tool would be used to inspect alignments of mating twinaxial-connector assemblies on interconnecting wiring harnesses. More specifically, the tool would be used to inspect the...

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Briefs: Materials

This innovation blends the merits of multifoil insulation (MFI) with aerogel-based insulation to develop a highly versatile, ultra-low thermally conductive material called hybrid multifoil aerogel...

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Briefs: Imaging

The world’s first silicon-based complementary metal oxide/semi-conductor (CMOS) integrated-circuit voltage-controlled oscillator (VCO) operating in a frequency range around 324...

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Application Briefs: Aerospace
STEREO observatories and Solar Probe
Johns Hopkins University Applied Physics Laboratory
Laurel, MD
240-228-5000
www.jhuapl.edu

NASA’s Solar Terrestrial Relations Observatory...

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Briefs: Electronics & Computers

A proposed brushless shaft-angle sensor for use in extreme cold would offer significant advantages over prior such sensors:

It would be capable of operating in extreme cold; and Its...
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Briefs: Physical Sciences
Compact Dielectric-Rod White-Light Delay Lines

Optical delay lines of a proposed type would be made from rods of such dielectric materials as calcium fluoride, fused silica, or sapphire. These would offer advantages over prior optical delay lines, as summarized below.

Briefs: Medical
Hand-Held Units for Short-Range Wireless Biotelemetry

Special-purpose hand-held radio- transceiver units have been proposed as means of short-range radio powering and interrogation of surgically implanted microelectromechanical sensors and actuators. These units are based partly on the same principles as those of the units described in...

Briefs: Electronics & Computers

Electrostatically actuated nano- electromechanical switches based on carbon nanotubes have been fabricated and tested in a continuing effort to develop high-speed switches for a...

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Briefs: Materials

Workers at NASA Ames Research center are endeavoring to develop durable, oxidation- resistant, foam thermal protection systems (TPSs) that would be suitable for covering large exterior...

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Briefs: Materials

Efforts are underway to develop inexpensive, low-power electronic sensors, based on single-walled carbon nanotubes (SWCNTs), for measuring part-per-million and part-per-billion of...

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Briefs: Electronics & Computers

Coaxial electric heaters have been conceived for use in highly sensitive instruments in which there are requirements for compact heaters but stray magnetic fields associated with heater electric currents would...

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Briefs: Electronics & Computers

Nano- multiplication- region avalanche photodiodes (NAPDs), and imaging arrays of NAPDs integrated with complementary metal oxide/semiconductor (CMOS) active-pixel-sensor integrated...

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Briefs: Medical

A nanotube array based on vertically aligned nanotubes or carbon nanofibers has been invented for use in localized electrical stimulation and recording of electrical responses in...

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Articles: Robotics, Automation & Control

The use of variable-frequency drives (VFDs) to control AC motors has increased dramatically in recent years. In addition to low operating cost and high performance, they save energy....

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Application Briefs: Photonics/Optics

Light beam homogenizer designs used for decades are largely based upon lenticular lens arrays that date back to the 1940s and 1950s. A more recent design is from the late 1980s that comprises a pair...

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Briefs: Materials
Lightweight Tanks for Storing Liquefied Natural Gas

Single-walled, jacketed aluminum tanks have been conceived for storing liquefied natural gas (LNG) in LNG-fueled motor vehicles. Heretofore, double- wall steel tanks with vacuum between the inner and outer walls have been used for storing LNG. In comparison with the vacuum-insulated steel...

Briefs: Materials
Foam Core Shielding for Spacecraft

A foam core shield (FCS) system is now being developed to supplant multilayer insulation (MLI) systems heretofore installed on spacecraft for thermal management and protection against meteoroid impacts. A typical FCS system consists of a core sandwiched between a face sheet and a back sheet. The core can...

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