Stories
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2005
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Briefs: Electronics & Computers
Wireless Orbiter Hang-Angle Inclinometer System
A document describes a system to reliably gather the hang-angle inclination of the orbiter. The system comprises a wireless handheld master station (which contains the main station software) and a wireless remote station (which contains the inclinometer sensors, the RF transceivers, and the remote...
Research News: Lighting
Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea Georgia Institute of Technology, Atlanta, Georgia
Keon Jae Lee, a professor in KAIST's Department of Materials Science and...
Briefs: Electronics & Computers
338-GHz Semiconductor Amplifier Module
A 35-nm-gate-length InP, high-electron-mobility transistor (HEMT) with a high-indium-content channel as the key component was developed to produce an MMIC (monolithic microwave integrated circuit) power amplifier. With a shorter gate length than previous transistor generations, it allows for electrons to...
Briefs: Electronics & Computers
Magnetic field response sensors are a class of sensors that are powered via oscillating magnetic fields, and when electrically active, respond...
Articles: Transportation
(Winner of an HP Workstation)
Regenerative Braking Bike Front Wheel
David Swain, Frank Maurer, Jason Moore, and Albert Shih
Ann Arbor, MI
With the push of a button and without...
Products: Lighting
The AS1119 LED dot matrix driver from austriamicrosystems (Unterpremstaetten, Austria) drives 144 LEDs but requires only 9 mm² PCB space, reduces external component count, reduces connector pin count, and requires fewer...
Briefs: Energy
Société de Conseil et de Prospective Scientifique (SCPS), located in Rosny-sous-Bois, France, developed a technology that allows the nickel-zinc battery system to work as close as possible to its...
Who's Who: Aerospace
In 2001, NASA engineer Michael Ewert developed and patented a unique solar-powered vapor-compression refrigeration system that...
Briefs: Materials
Lithium-Ion Electrolytes Containing Phosphorous-Based, Flame-Retardant Additives
Future NASA missions aimed at exploring Mars, the Moon, and the outer planets require rechargeable batteries that can operate over a wide temperature range (–60 to +60 °C) to satisfy the requirements of various applications. In addition, many of these applications...
Application Briefs: Electronics & Computers
DC is not always DC. When systems are developed to operate on DC power, the DC electrical environment will have noise and may experience other disturbances. This article will explore considerations for generating low...
Briefs: Mechanical & Fluid Systems
Progress has been made in the development of a family of robotic land vehicles having modular and minimalist design features chosen to impart a combination of robustness, reliability, and versatility....
Articles: Sensors/Data Acquisition
The ability to make real-time decisions based on pressure, temperature, or flow measurements while a process is running can provide significant advantages in a measurement and control...
Briefs: Physical Sciences
Sensors for monitoring surface wear and/or temperature without need for wire connections have been developed. Excitation and interrogation of these sensors are accomplished by means of a...
Briefs: Power
A circuit topology has been designed to guarantee the output of intrinsically safe power for the operation of electrical devices in a hazardous environment. This design...
Briefs: Mechanical & Fluid Systems
The Picosat and Uninhabited Aerial Vehicle Systems Engineering (PAUSE) project is developing balloon-borne instrumentation systems as aerobots for scientific exploration of remote planets and for...
Briefs: Physical Sciences
In the polar regions of the Moon, some areas within craters are permanently shadowed from solar illumination and can drop to temperatures of 100 K or lower. These sites...
Articles: Electronics & Computers
Proper thermal design of any electronics-based system is key to its long-term reliability. NASA engineering expertise in this area is renowned. The International Space Station (ISS) operates...
Application Briefs: Robotics, Automation & Control
The benefits of aquatic physical therapy and rehabilitation for those who have difficulty with weightbearing activities due to arthritis or injury, or those who are overweight, have...
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: Electronics & Computers
Smart Power Supply for Battery-Powered Systems
A power supply for battery-powered systems has been designed with an embedded controller that is capable of monitoring and maintaining batteries, charging hardware, while maintaining output power. The power supply is primarily designed for rovers and other remote science and engineering vehicles, but...
Briefs: Materials
Optimized Li-Ion Electrolytes Containing Fluorinated Ester Co-Solvents
A number of experimental lithium-ion cells, consisting of MCMB (meso-carbon microbeads) carbon anodes and LiNi0.8Co0.2O2 cathodes, have been fabricated with increased safety and expanded capability. These cells serve to verify and demonstrate the reversibility, low-temperature...
Products: Lighting
The Jaz™ Modular Measuring Suite from Ocean Optics, Dunedin, FL, is now available for radiometric analysis of LEDs, flat panel displays, lamps, and other radiant sources. The Jaz Light Meter is a pre-configured,...
Briefs: Materials
Improved Low-Temperature Performance of Li-Ion Cells Using New Electrolytes
As part of the continuing efforts to develop advanced electrolytes to improve the performance of lithiumion cells, especially at low temperatures, a number of electrolyte formulations have been developed that result in improved low-temperature performance (down to –60...
Briefs: Physical Sciences
Biasable, Balanced, Fundamental Submillimeter Monolithic Membrane Mixer
This device is a biasable, submillimeter-wave, balanced mixer fabricated using JPL’s monolithic membrane process — a simplified version of planar membrane technology. The primary target application is instrumentation used for analysis of atmospheric constituents, pressure,...
Briefs: Electronics & Computers
Ethernet-Enabled Power and Communication Module for Embedded Processors
The power and communications module is a printed circuit board (PCB) that has the capability of providing power to an embedded processor and converting Ethernet packets into serial data to transfer to the processor. The purpose of the new design is to address the shortcomings...
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...
Application Briefs: Energy
International Battery is building a battery prototype for NASA that will provide backup power in support of the space shuttle program. NASA is interested in the company’s largeformat,...
Briefs: Electronics & Computers
A small, segmented microstrip patch antenna integrated with an X-band feedback oscillator on a high- permittivity substrate has been built and tested (see Figure 1). The oscillator antenna is powered by...
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