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Assembly Errors Are Quickly Identified With New Testing Technology
Today‘s cars are increasingly custom-built. One customer might want electric windows and heated door mirrors, while another is satisfied with the minimum basic equipment. The situation with aircraft is no different: each airline is looking for different interior finishes. Yet the...
News: Imaging
Seismic Tests of Full-Scale Building Predict Earthquake Damage
What happens when you put a fully equipped five-story building — which includes an intensive care unit, a surgery suite, piping and air conditioning, fire barriers, and even a working elevator — through a series of high-intensity earthquakes?
News
Miniature Sandia Sensors May Advance Climate Studies
An air sampler the size of an earplug is expected to cheaply and easily collect atmospheric samples to improve computer climate models. Developed by Sandia National Laboratories, the design employs a commonly used alloy to house an inexpensive microvalve situated above the sample chamber.
News: Green Design & Manufacturing
Creators of a nanotech-based system that captures carbon dioxide from the atmosphere within a submarine while providing a more environmentally friendly removal process have won the...
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News: Imaging
Researchers Create Human-Scale 3D Videoconferencing Pod
A Queen's University researcher has created a Star Trek-like human-scale 3D videoconferencing pod that allows people in different locations to video conference as if they are standing in front of each other. Two people simply stand in front of their own life-size cylindrical pods and talk to...
News
Researchers Envision 'Smart Doorknobs' and Gesture-Controlled Smartphones
A doorknob that knows whether to lock or unlock based on how it is grasped, a smartphone that silences itself if the user holds a finger to her lips and a chair that adjusts room lighting based on recognizing if a user is reclining or leaning forward are among the many...
News: Materials
Copper is one of the few metals that can turn carbon dioxide into hydrocarbon fuels with relatively little energy, but it is temperamental and easily oxidized. MIT researchers have...
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Briefs: Mechanical & Fluid Systems
Wavefront Compensation Segmented Mirror Sensing and Control
The primary mirror of very large submillimeter-wave telescopes will necessarily be segmented into many separate mirror panels. These panels must be continuously co-phased to keep the telescope wavefront error less than a small fraction of a wavelength, to ten microns RMS (root mean square)...
Briefs: Mechanical & Fluid Systems
A series of free-mass designs for the ultrasonic/sonic driller/corer (USDC) has been developed to maximize the transfer of energy from the piezoelectric transducer through the horn...
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Briefs: Materials
Over the past 30 years, significant technology gains in polymer engineering have greatly expanded the applications suited to adhesive bonding with epoxy resins. Advanced bonding...
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Briefs: Materials
Electrochemical Ultracapacitors Using Graphitic Nanostacks
Electrochemical ultracapacitors (ECs) have been developed using graphitic nanostacks as the electrode material. The advantages of this technology will be the reduction of device size due to superior power densities and relative powers compared to traditional activated carbon electrodes....
Briefs: Medical
Monitoring Location and Angular Orientation of a Pill
A mobile pill transmitter system moves through, or adjacent to, one or more organs in an animal or human body, while transmitting signals from its present location and/or present angular orientation. The system also provides signals from which the present roll angle of the pill, about a selected...
Briefs: Medical
Molecular Technique to Reduce PCR Bias for Deeper Understanding of Microbial Diversity
Current planetary protection policies require that spacecraft targeted to sensitive solar system bodies be assembled and readied for launch in controlled cleanroom environments. A better understanding of the distribution and frequency at which high-risk...
Briefs: Medical
Dramatic improvements have been made in NASA’s Whole Blood Staining Device (WBSD) since it was last described in “Whole-Blood- Staining Device,” (MSC-22614) NASA Tech Briefs, Vol. 23, No. 10 (October...
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Briefs: Physical Sciences
PRTs and Their Bonding for Long-Duration, Extreme- Temperature Environments
Research was conducted on the qualification of Honeywell platinum resistance thermometer (PRT) bonding for use in the Mars Science Laboratory (MSL). This is the first time these sensors will be used for Mars-related projects. Different types of PRTs were employed for the...
Briefs: Physical Sciences
3D Display Using Conjugated Multiband Bandpass Filters
Stereoscopic display techniques are based on the principle of displaying two views, with a slightly different perspective, in such a way that the left eye views only by the left eye, and the right eye views only by the right eye. However, one of the major challenges in optical devices is...
Briefs: Physical Sciences
Real-Time, Non-Intrusive Detection of Liquid Nitrogen in Liquid Oxygen at High Pressure and High Flow
An integrated fiber-optic Raman sensor has been designed for real-time, nonintrusive detection of liquid nitrogen in liquid oxygen (LOX) at high pressures and high flow rates in order to monitor the quality of LOX used during rocket engine ground...
Briefs: Physical Sciences
Microwave imaging radiometers operating in the 50–183 GHz range for retrieving atmospheric temperature and water vapor profiles from airborne platforms have...
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Briefs: Physical Sciences
Laser Ablation Electrodynamic Ion Funnel for 'In Situ' Mass Spectrometry on Mars
A front-end instrument, the laser ablation ion funnel, was developed, which would ionize rock and soil samples in the ambient Martian atmosphere, and efficiently transport the product ions into a mass spectrometer for in situ analysis.
Briefs: Physical Sciences
Mid- and Long-IR Broadband Quantum Well Photodetector
A single-stack broadband quantum well infrared photodetector (QWIP) has been developed that consists of stacked layers of GaAs/AlGaAs quantum wells with absorption peaks centered at various wavelengths spanning across the 9-to-11-μm spectral regions. The correct design of broadband QWIPs was a...
Briefs: Mechanical & Fluid Systems
Dual-Compartment Inflatable Suitlock
A paper discusses a dual-compartment inflatable suitlock (DCIS) for Extra-vehicular Activity (EVA) that will allow for dust control, suit maintenance, and efficient EVA egress/ingress. The expandable (inflatable technologies) aspect of the design will allow the unit to stow in a compact package for transport.
Briefs: Manufacturing & Prototyping
Techniques for Solution-Assisted Optical Contacting
A document discusses a “solution-assisted contacting” technique for optical contacting. An optic of surface flatness Lambda/20 was successfully contacted with one of “moderate” surface quality, or Lambda/4. Optics used were both ultra-low expansion (ULE) glass (Lambda/4 and Lambda/20) and...
Briefs: Materials
Large-Strain Transparent Magnetoactive Polymer Nanocomposites
A document discusses polymer nanocomposite superparamagnetic actuators that were prepared by the addition of organically modified superparamagnetic nanoparticles to the polymer matrix. The nanocomposite films exhibited large deformations under a magnetostatic field with a low loading...
Briefs: Mechanical & Fluid Systems
Thermodynamic Vent System for an On-Orbit Cryogenic Reaction Control Engine
A report discusses a cryogenic reaction control system (RCS) that integrates a Joule-Thompson (JT) device (expansion valve) and thermodynamic vent system (TVS) with a cryogenic distribution system to allow fine control of the propellant quality (subcooled liquid) during...
Briefs: Information Technology
Time Distribution Using SpaceWire in the SCaN Testbed on ISS
A paper describes an approach for timekeeping and time transfer among the devices on the CoNNeCT project’s SCaN Testbed. It also describes how the clocks may be synchronized with an external time reference; e.g., time tags from the International Space Station (ISS) or RF signals...
Podcasts
Stephen Merkowitz, Project Manager, NASA Goddard Space Flight Center, Greenbelt, Maryland
Stephen Merkowitz: NASA currently offers a network of space geodetic ground stations that do Very Long Baseline Interferometry (VLBI), satellite laser ranging (SLR), and [global navigation satellite system] GNSS or GPS tracking. The new space geodesy...
Application Briefs: Motion Control
Pressure controllers from Alicat Scientific have been selected for use in NASA sounding rockets to control payload attitude. The payload sections of some NASA...
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Application Briefs: Sensors/Data Acquisition
Currently cruising through space at more than 10,000 mph, the Mars Science Laboratory (MSL) is scheduled to touch down on the red planet in August. The Mars Science Laboratory was...
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Research News: Lighting
LEDs seem to reach a point where more electricity no longer imparts the same kick and productivity levels off. A team of researchers from California and Japan has devised a...
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