Stories
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Products: Photonics/Optics
American Bright Optoelectronics Corp. (Chino, CA) has introduced the BWL-3B series of 3-watt, high-power LEDs in a 9 × 9-mm package that consists of multiple dice in a single multi-leaded package. This packaging allows for each...
Products: Photonics/Optics
Spectroscopic Reflectometer
HORIBA Jobin Yvon (Edison, NJ) offers the DigiScreen spectroscopic reflectometer capable of measuring film thickness deposited on a large-area glass substrate in less than one second. With a spectral range of 400 nm to 800 nm, the DigiScreen can measure film thickness from 100 nm to several microns, and accepts sample...
Products: Photonics/Optics
Hamamatsu Corp. (Bridgewater, NJ) offers a transmitter-receiver pair of photo integrated circuits (ICs) for use in MOST-compliant automotive multimedia networks. The L10063-01 transmitter and S10064-01 receiver provide...
Products: Photonics/Optics
The TM-1405GE from JAI PULNiX (San Jose, CA) is a high-resolution, 1.4-megapixel CCD camera. The interline transfer CCD permits full vertical and horizontal resolution with shutter speeds up to 1/16,000 sec. Asynchronous...
Products: Photonics/Optics
Pulsed Fiber Laser
Lumics (Berlin, Germany) has introduced the LU1060F400 pulsed fiber laser that offers up to 0.8 mJ pulse energy with average power of 4W. It is a short-pulse Ytterbium fiber laser in Master Oscillator Power Amplifier (MOPA) configuration. The laser operation mode can be changed by selecting customer-specific parameters, such as...
Products: Photonics/Optics
Sensors Unlimited, Goodrich Corp. (Princeton, NJ) has released SUI Image Analysis Software, which allows full operational control of the high-speed windowing functions on the SU320MSW-1.7RT Shortwave Infrared (SWIR)...
Articles: Aerospace
In celebration of the 30th Anniversary of NASA Tech Briefs, our features in 2006 highlight a different technology category each month, tracing the past 30 years of the technology, and continuing with a glimpse...
Briefs: Manufacturing & Prototyping
Composites are becoming the material of choice for the manufacture of large, complex aerostructures. The aft section of the jumbo Airbus A380 and the wings of the...
Briefs: Medical
A proposed method of surgical repair of fractured bones would incorporate recent and future advances in the art of composite materials. The composite materials used in this method...
Briefs: Electronics & Computers
An Alternative for Emergency Preemption of Traffic Lights
An electronic communication and control system has been developed as a prototype of advanced means of automatically modifying the switching of traffic lights to give priority to emergency vehicles. This system could be used alternatively or in addition to other emergency...
Briefs: Transportation
The purpose of this article is to describe, in more detail, the transponder installed in each vehicle that participates in the emergency traffic-light-preemption system described in the...
Briefs: Electronics & Computers
The figure shows an intersection monitor that is a key subsystem of an emergency traffic-light-preemption system that could be any of the systems described in the three immediately...
Briefs: Transportation
Automated Announcements of Approaching Emergency Vehicles
Street intersections that are equipped with traffic lights would also be equipped with means for generating audible announcements of approaching emergency vehicles, according to a proposal. The means to generate the announcements would be implemented in the intersection-based subsystems of...
Briefs: Electronics & Computers
Digital Front End for Wide-Band VLBI Science Receiver
An upgrade to the very long baseline interferometry (VLBI) science receiver (VSR) — a radio receiver used in NASA’s Deep Space Network (DSN) — is currently being implemented. The current VSR samples standard DSN intermediate frequency (IF) signals at 256 MHz and after digital...
Briefs: Electronics & Computers
A proposed free-space optical communication system would operate in a full-duplex mode, using a single constant-power laser beam for transmission and reception of binary signals at both...
Briefs: Electronics & Computers
Optical oscillators that exploit resonantly enhanced four-wave mixing in nonlinear whispering- gallery- mode (WGM) resonators are under investigation for potential utility as low-power,...
Briefs: Electronics & Computers
A scheme for stabilizing the frequency of a microwave signal is proposed that exploits the operational characteristics of a coupled optoelectronic oscillator (COEO) and related...
Briefs: Manufacturing & Prototyping
In a procedure that partly resembles the lost-wax casting process, a crucible made of a brittle material (ceramic, quartz, or glass) is covered with a layer of metal containing channels. The...
Briefs: Information Technology
Several artificial-intelligence search techniques have been tested as means of solving the swath segment selection problem (SSSP) ? a real-world problem that is not only of interest in its own right,...
Briefs: Information Technology
The spatial standard observer is a computational model that provides a measure of the visibility of a target in a uniform background image or of the visual discriminability of two images. Standard observers have...
Briefs: Information Technology
An alternative to an optimal method of automated classification of signals modulated with M-ary phase-shift-keying (M-ary PSK or MPSK) has been derived. The alternative method is approximate, but it...
Briefs: Information Technology
Assistant for Analyzing Tropical Rain Mapping Radar Data
TDS is composed of software and hardware elements incorporating a two-frequency spaceborne radar system for measuring tropical precipitation. The TDS would be used primarily in generating data products for scientific investigations. The most novel part of the TDS would be expert-system...
Briefs: Software
Discerning Trends in Performance Across Multiple Events
The program can perform Fourier analysis and other functions for the purposes of frequency analysis and trending of all variables. These functions facilitate identification of past use of diagnosed systems and of anomalies in such systems, and enable rapid assessment of related current...
Briefs: Materials
Doped pyrochlore oxides of a type described below are under consideration as alternative materials for high temperature thermal barrier coatings (TBCs). In comparison with...
Briefs: Materials
Today, a major thrust toward improving the thermomechanical properties of engine components lies in the development of fiber-reinforced silicon carbide matrix composite materials,...
Briefs: Materials
Patches for Repairing Ceramics and Ceramic Matrix Composites
Patches consisting mostly of ceramic fabrics impregnated with partially cured polymers and ceramic particles are being developed as means of repairing ceramics and ceramic-matrix composites (CMCs) that must withstand temperatures above the melting points of refractory metal alloys. These...
Briefs: Materials
Electrolyte additive 4-vinyl-1, 3-dioxolane-2-one has been found to be promising for rechargeable lithium-ion electrochemical cells. This and other additives, along with advanced...
Briefs: Materials
Optimizing solution chemistry and the addition of titania and fumed silica powder reduces shrinkage. These materials would serve to increase thermal efficiency by providing thermal...
Briefs: Mechanical & Fluid Systems
Identification, analysis, and control of fluid mechanically generated sound from models of aircraft and automobiles in special low-noise, semi-anechoic wind tunnels are an important research...
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Webcasts
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SAE Automotive Engineering Podcast: Additive Manufacturing
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A New Approach to Manufacturing Machine Connectivity for the Air Force
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