Briefs: Medical
The multipurpose, multiaxial, isokinetic dynamometer (MMID) is a computer-controlled system of exercise machinery that can serve as a means for quantitatively assessing a...
Products
Noran Engineering, Westminster, CA, has released NEiNastran V9 finite element analysis (FEA) software for engineering analysis and simulation. Performance enhancements include added support for model input files over 10 million...
Application Briefs: Propulsion
Marotta Controls
Montville, NJ
973-334-7800
www.marotta.com
Application Briefs: Software
Analytical Graphics (AGI)
Exton, PA
610-981-8000
www.agi.com
Articles: Photonics/Optics
Historically, high-energy (Joule-class) nanosecond YAG lasers have been confined primarily to laboratory research facilities and government labs. System designs were unique for...
Articles: Photonics/Optics
Design for Manufacturing (DFM) has taken off like a rocket in the electronics industry in recent years. Performing process and device simulations on CMOS transistors in a DFM flow have proven to be...
Who's Who: Medical
At remote sites, the International Space Station, or missions to the Moon or Mars, illness and injury can be extremely serious. Far from hospitals, scientists and astronauts may find...
Articles: Photonics/Optics
It is widely known that the light emitting diode (LED) R&D and commercialization community is striving to produce higher power, bright-white-light LEDs. From both a temperature and...
Briefs: Photonics/Optics
Simplified Optics and Controls for Laser Communications
A document discusses an architecture of a spaceborne laser communication system that provides for a simplified control subsystem that stabilizes the line of sight in a desired direction. Heretofore, a typical design for a spaceborne laser communication system has called for a high-bandwidth...
Briefs: Photonics/Optics
A method of coherent detection of high-rate pulse-position modulation (PPM) on a received laser beam has been conceived as a means of reducing the deleterious effects of noise and...
Briefs: Medical
Implantable Wireless MEMS Sensors for Medical Uses
Sensors designed and fabricated according to the principles of microelectromechanical systems (MEMS) are being developed for several medical applications in outer space and on Earth.The designs of these sensors are based on a core design family of pressure sensors, small enough to fit into the...
Products: Photonics/Optics
Lambda Solutions (Waltham, MA) has released the Dimension-P Series Raman spectrometers providing real-time analysis and monitoring in pharmaceutical or food processing quality control. The systems are operated via...
Briefs: Medical
Dehydrating and Sterilizing Wastes Using Supercritical CO2
A relatively low-temperature process for dehydrating and sterilizing biohazardous wastes in an enclosed life-support system exploits (1) the superior mass-transport properties of supercritical fluids in general and (2) the demonstrated sterilizing property of supercritical CO2...
Products: Photonics/Optics
PPT VISION (Minneapolis, MN) has added the IMPACT™ T28 and the IMPACT™ T24 to its line of IMPACT T-series color cameras designed for inline industrial vision applications. The IMPACT T28 provides a 1,600 × 1,200 pixel...
Products: Photonics/Optics
Liekki (Reston, VA) offers Liekki Application Designer (LAD) v3.1 software for power fiber laser and amplifier simulation. It includes tools for designing systems employing large mode area fibers. Using multimode...
Briefs: Electronics & Computers
Networks of video cameras, meteorological sensors, and ancillary electronic equipment are under development in collaboration among NASA Ames Research Center, the Federal Aviation Administration (FAA), and...
Products: Photonics/Optics
Confocal chromatic optical pens from Micro Photonics (Irvine, CA) allow 30 different optical pen configurations for specific depth of field, spot size, working distance, object slope, and photometric efficiency. Users...
Briefs: Electronics & Computers
The development and evaluation of new hybrid and solid rocket motors requires accurate characterization of the propellant surface regression as a function of key operational parameters. These...
Products: Photonics/Optics
Andor Technology (South Windsor, CT) has introduced the iXonEM + EMCCD camera that can detect single photon events without an image intensifier. It offers photon collection efficiencies of up to 95% QE, readout speeds up...
Briefs: Electronics & Computers
Optoelectronic sensors of a proposed type would perform the functions of both electronic cameras and triangulation- type laser range finders. That is to say, these sensors would both (1) generate ordinary video...
Products: Photonics/Optics
A line of green laser diode modules available from BEA Lasers (Elk Grove Village, IL) is suitable for spectroscopy, particle measurement, medical tissue analysis, interferometry, holography, robotic control, and...
Briefs: Electronics & Computers
Miniature Housings for Electronics With Standard Interfaces
A family of general-purpose miniature housings has been designed to contain diverse sensors, actuators, and drive circuits plus associated digital electronic readout and control circuits. Each housing fits within an envelope having dimensions of about 2-1.4 by 1-3.4 by 1.2 in. (about...
Products: Photonics/Optics
Kinetic Systems (Boston, MA) offers the MK26 vibration isolation workstation for ultra-low natural frequency applications. It utilizes the Minus K® vertical isolator, which uses a stiff spring and a...
Briefs: Electronics & Computers
In a proposed digital signal-processing technique, a radio receiver would control the phasing of a phased-array antenna to aim the peaks of the antenna radiation pattern toward desired...
Products: Photonics/Optics
TOPTICA Photonics AG (Graefelfing, Germany) offers the TA 100 single-mode output diode laser and amplifier systems, which may serve as a replacement for dye- or frequency-doubled solidstate lasers. The red-wavelength...
Briefs: Electronics & Computers
Resonant edge-slot (slotted-waveguide) array antennas can now be designed very accurately following a modern computational approach like that followed for some other microwave components....
Products: Photonics/Optics
Moulded Optics GmbH (Schoffengrund, Germany) offers single-sided rod and blank-molded aspheric lenses made of crown, borosilicate, and high-refractive glass materials in diameter sizes from 2 mm to 100 mm. The aspheric...
Briefs: Mechanical & Fluid Systems
An ultrasonic rock-abrasion tool (URAT) was developed using the same principle of ultrasonic/sonic actuation as that of the tools described in two prior NASA Tech Briefs articles:...
Briefs: Mechanical & Fluid Systems
Controllable active struts that would function as linear actuators with variable spring stiffness and damping have been proposed as components of advanced suspension systems of future...
Briefs: Materials
Experiments have shown the stability enhancement of polymeric sensing films on mixing the polymer with colloidal filler particles (submicron-sized) of carbon black, silver,...
Briefs: Materials
Nanotube Dispersions Made With Charged Surfactant
Dispersions (including monodispersions) of nanotubes in water at relatively high concentrations have been formulated as prototypes of reagents for use in making fibers, films, and membranes based on single-walled carbon nanotubes (SWNTs). Other than water, the ingredients of a dispersion of this...
Briefs: Materials
Aerogels for Thermal Insulation of Thermoelectric Devices
Silica aerogels have been shown to be attractive for use as thermal insulation materials for thermoelectric devices. It is desirable to thermally insulate the legs of thermoelectric devices to suppress lateral heat leaks that degrade thermal efficiency. Aerogels offer not only high...
Briefs: Materials
Several recently formulated nickelbase superalloys have been developed with excellent high-temperature creep resistance, at lower densities than those of currently used nickel-base...
Briefs: Materials
Wire-Mesh-Based Sorber for Removing Contaminants From Air
A paper discusses an experimental regenerable sorber for removing CO2 and trace components — principally, volatile organic compounds, halocarbons, and NH3 — from spacecraft cabin air. This regenerable sorber is a prototype of what is intended to be a lightweight...
Briefs: Mechanical & Fluid Systems
A technique for real-time estimation of stability and control derivatives (derivatives of moment coefficients with respect to control-surface deflection angles) was used to support a...
Briefs: Mechanical & Fluid Systems
A flight test on an F-15 airplane was performed to evaluate the utility of prescribed simultaneous independent surface excitations (PreSISE) for real-time estimation of flight-control...
Briefs: Mechanical & Fluid Systems
A tool makes it possible to couple a torque wrench to an externally knurled, internally threaded, round cable connector. The purpose served by the tool is to facilitate the...
Briefs: Mechanical & Fluid Systems
Controlling Attitude of a Solar-Sail Spacecraft Using Vanes
Briefs: Physical Sciences
Sensors for Using Times of Flight To Measure Flow Velocities
Thin-film sensors for measuring flow velocities in terms of times of flight are undergoing development. These sensors are very small and can be mounted flush with surfaces of airfoils, ducts, and other objects along which one might need to measure flows. Alternatively or in addition,...
Briefs: Physical Sciences
Using Satellite Data in Weather Forecasting: I
The GOES Product Generation System (GPGS) is a set of computer codes and scripts that enable the assimilation of real-time Geostationary Operational Environmental Satellite (GOES) data into regional weather forecasting mathematical models. The GPGS can be used to derive such geophysical parameters...
Briefs: Physical Sciences
A family of proposed miniature sources of power would exploit the direct conversion of the kinetic energy of a particles into electricity. In addition to having long operational...
Briefs: Physical Sciences
An instrumentation system has been developed for studying interactions between a glacier or ice sheet and the underlying rock and/or soil. Prior borehole imaging systems have been used in well-drilling and...
Briefs: Photonics/Optics
Whispering-gallery-mode (WGM) optical resonators can be designed to exhibit continuous spectra over wide wavelength bands (in effect, white-light spectra), with ultrahigh values of the...
Briefs: Semiconductors & ICs
Carbon-Nanotube Schottky Diodes
Schottky diodes based on semiconducting single-walled carbon nanotubes are being developed as essential components of the next generation of submillimeter-wave sensors and sources. Initial performance predictions have shown that the performance characteristics of these devices can exceed those of the...
Briefs: Software
Coordinating an Autonomous Earth- Observing Sensorweb
Briefs: Software
Using Dissimilarity Metrics to Identify Interesting Designs
Briefs: Software
X-Windows PVT Widget Class
The X-Windows Process Validation Table (PVT) Widget Class ("Class" is used here in the object oriented programming sense of the word) was devised to simplify the task of implementing network registration services for Information Sharing Protocol (ISP) graphical user interface (GUI) computer programs. Heretofore, ISP...
Briefs: Software
Shuttle Data Center File- Processing Tool in Java
A Java-language computer program has been written to facilitate mining of data in files in the Shuttle Data Center (SDC) archives. This program can be executed on a variety of workstations or via Web-browser programs. This program is partly similar to prior C-language programs used for the same...
Briefs: Software
Statistical Evaluation of Utilization of the ISS
PayLoad Utilization Modeler (PLUM) is a statistical-modeling computer program used to evaluate the effectiveness of utilization of the International Space Station (ISS) in terms of the number of research facilities that can be operated within a specified interval of time. PLUM is designed to...
Articles: Electronics & Computers
30 Years of Electronics & Semiconductors
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 into the future of where the technology is headed. Along the way, we include insights from...
Articles
How Much Financing Does Your Growing Company Need?
How much money will your growing company need? The answer is, you want enough investment to grow the company to its potential, yet do not want to over-fund, giving up too much equity. You cannot raise funds without a reasonable estimate of what you need.
Briefs: Physical Sciences
A family of proposed miniature sources of power would exploit the direct conversion of the kinetic energy of...
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How to Protect Your Projects from Moisture and Pressure: 5 Common Mistakes...
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Crucial Considerations When Choosing the Right Enclosure for Your...
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Advanced Components to Enhance Laser System Performance
Upcoming Webinars: Automotive
Innovations and Techniques for Joining Dissimilar Materials
Upcoming Webinars: Manufacturing & Prototyping
Considerations When Selecting Heat Shrink Processing Equipment
Upcoming Webinars: Automotive
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Thrust Stand Measures Thrusts of
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Evaluating Low-and Ultra-Low-Outgassing Silicones for Space Applications
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What Does Resolution Mean in 3D Printing?
Briefs: Wearables
