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Briefs: Photonics/Optics
A system has been developed to replace manual measurement of small jet engine blades during safety and performance inspections. The high-speed, automated system consists of...
Briefs: Manufacturing & Prototyping
A recently invented method of fabricating periodic or otherwise ordered nanostructures involves the use of chaperonin polypeptides. The method is intended to serve as a potentially...
Briefs: Photonics/Optics
Small, inexpensive, hand-held optoelectronic color-measuring devices based on metal-film/dielectric-film interference filters are undergoing development. These color meters could be suitable...
Briefs: Mechanical & Fluid Systems
Two-Stage Solenoid
A proposed design for a solenoid-based electromechanical actuator would provide greater starting force than does a comparable conventional design. As used here, "starting force" signifies the magnetic force exerted by the actuator at one end of its stroke when the gap in its magnetic circuit is the widest. A solenoid of...
Briefs: Electronics & Computers
The ambient-light-canceling camera (ALCC) is a proposed near-infrared electronic camera that would utilize a combination of (1) synchronized illumination during alternate frame periods...
Briefs: Photonics/Optics
A compact, dual-frequency, dual-polarization, wide-angle-scanning antenna system has been developed as part of an airborne instrument for measuring rainfall. This system is an upgraded...
Briefs: Mechanical & Fluid Systems
A proposed docking mechanism would form a ball-and-socket joint in the docked condition. The mechanism could tolerate significant initial misalignment because it would include an alignment cone that...
Briefs: Materials
Curing Composite Materials Using Lower-Energy Electron Beams
In an improved method of fabricating composite-material structures by laying up prepreg tapes (tapes of fiber reinforcement impregnated by uncured matrix materials) and then curing them, one cures the layups by use of beams of electrons having kinetic energies in the range of 200 to 300...
Briefs: Materials
Aluminum-Alloy-Matrix/Alumina-Reinforcement Composites
Isotropic composites of aluminum alloy matrices reinforced with particulate alumina have been developed as lightweight, high-specific-strength, less expensive alternatives to nickel-base and ferrous superalloys. These composites feature a specific gravity of about 3.45 g/cm3 and specific...
Briefs: Materials
Fibrous-ceramic/aerogel composite tiles have been invented to afford combinations of thermal-insulation and mechanical properties superior to those attainable by making tiles of fibrous...
Briefs: Materials
Urethane/Silicone Adhesives for Bonding Flexing Metal Parts
Adhesives that are blends of commercially available urethane and silicone adhesives have been found to be useful for bonding metal parts that flex somewhat during use. These urethane/silicone adhesives are formulated for the specific metal parts to be bonded. The bonds formed by these...
Briefs: Electronics & Computers
Scalable Architecture for Multihop Wireless ad Hoc Networks
A scalable architecture for wireless digital data and voice communications via ad hoc networks has been proposed. Although the details of the architecture and of its implementation in hardware and software have yet to be developed, the broad outlines of the architecture are fairly clear:...
Briefs: Electronics & Computers
Improved Thermoplastic/Iron-Particle Transformer Cores
A method of fabricating improved transformer cores from composites of thermoplastic matrices and iron-particles has been invented. Relative to commercially available laminated-iron-alloy transformer cores, the cores fabricated by this method weigh less and are less expensive. Relative to prior...
Briefs: Aerospace
Concepts are being investigated for exploratory missions to Mars based on "Bioinspired Engineering of Exploration Systems" (BEES), which is a guiding principle of this...
Briefs: Electronics & Computers
Proposed modifications of an offset quadri-phase-shift keying (offset-QPSK) transmitter and receiver would reduce the amount of signal processing that must be done in the receiver to...
Briefs: Electronics & Computers
Eight-Channel Continuous Timer
A custom laboratory electronic timer circuit measures the durations of successive cycles of nominally highly stable input clock signals in as many as eight channels, for the purpose of statistically quantifying the small instabilities of these signals. The measurement data generated by this timer are sent to a...
Briefs: Electronics & Computers
Radar for Monitoring Hurricanes From Geostationary Orbit
A document describes a scanning Doppler radar system to be placed in a geostationary orbit for monitoring the three-dimensional structures of hurricanes, cyclones, and severe storms in general. The system would operate at a frequency of 35 GHz. It would include a large deployable spherical...
Briefs: Software
Windows®-Based Software Models Cyclic Oxidation Behavior
Oxidation of high-temperature aerospace materials is a universal issue for combustion-path components in turbine or rocket engines. In addition to the question of the consumption of material due to growth of protective scale at use temperatures, there is also the question of cyclic effects...
Briefs: Software
Software for Analyzing Sequences of Flow-Related Images
Spotlight is a computer program for analysis of sequences of images generated in combustion and fluid physics experiments. Spotlight can perform analysis of a single image in an interactive mode or a sequence of images in an automated fashion. The primary type of analysis is tracking of...
Briefs: Photonics/Optics
The thinning stage of the postfabrication process reported in the immediately preceding article is notable in its own right. Although the thinning process was described in the preceding...
Briefs: Robotics, Automation & Control
An electromechanical exoskeletal arm apparatus has been designed for use in controlling a remote robotic manipulator arm. The apparatus, called a “force-feedback exoskeleton arm master” (F-EAM) is...
Briefs: Mechanical & Fluid Systems
Double-Acting, Locking Carabiners
A proposed design for carabiners (tether hooks used in mountaineering, rock climbing, and rescue) is intended to make it possible to operate these devices even while wearing thick gloves. According to the proposal, the gate of a carabiner would be capable of swinging either toward or away from the hook body,...
Briefs: Robotics, Automation & Control
A noncontact position sensor has been designed for use with a specific two-dimensional linear electromagnetic actuator. To minimize the bulk and weight added by the sensor, the sensor has been...
Briefs: Photonics/Optics
An improved process that includes a high-temperature bonding subprocess has been developed to enable the fabrication of robust, flat, silicon-based charge-coupled devices (CCDs) for imaging...
Briefs: Physical Sciences
Waste-Heat-Driven Cooling Using Complex Compound Sorbents
Improved complex-compound sorption pumps are undergoing development for use as prime movers in heat-pump systems for cooling and dehumidification of habitats for humans on the Moon and for residential and commercial cooling on Earth. Among the advantages of sorption heat-pump systems are...
Briefs: Robotics, Automation & Control
A proposed design for an electromagnetic brake would increase the reliability while reducing the number of parts and the weight, relative to a prior commercially available electromagnetic brake. The reductions of...
Briefs: Physical Sciences
The pseudoslit spectrometer is a conceptual optoelectronic instrument that would offer some of the advantages, without the disadvantages, of prior linear- variable etalon (LVE) spectrometers and prior slit spectrometers....
Briefs: Photonics/Optics
In a recent improvement upon InxGa1- xAs/InP semiconductor lasers of the bipolar cascade type, quantum wells are added to Esaki tunnel junctions, which are standard parts of such...
Briefs: Physical Sciences
Filament-wound composites are replacing metals as the material of choice for tanks to hold liquids and gases. The composites have a high strength-to- weight ratio, making them...
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