Briefs: Software
Program Synthesizes UML Sequence Diagrams

A computer program called "Rational Sequence" generates Universal Modeling Language (UML) sequence diagrams of a target Java program running on a Java virtual machine (JVM). Rational Sequence thereby performs a reverse engineering function that aids in the design documentation of the target Java program....

Briefs: Software
Updated Computational Model of Cosmic Rays Near Earth

An updated computational model of the galactic-cosmic-ray (GCR) environment in the vicinity of the Earth, Earth's Moon, and Mars has been developed, and updated software has been developed to implement the updated model. The GCR model and software in their original forms, developed during the...

Briefs: Mechanical & Fluid Systems
Two High-Temperature Foil Journal Bearings

An enlarged, high-temperature -compliant foil bearing has been built and tested to demonstrate the feasibility of such bearings for use in aircraft gas turbine engines. At 150 mm in diameter, this is the largest foil bearing known to date. This bearing is a scaled-up version of a patented...

Briefs: Mechanical & Fluid Systems
Using Plates To Represent Fillets in Finite-Element Modeling

A method that involves the use of fictitious plate elements denoted bridge plates has been developed for representing the stiffnesses of fillets in finiteelement calculations of deflections, stresses, and strains in structures. In the absence of this method, it would be necessary to...

Briefs: Mechanical & Fluid Systems

A nonlinear version of the Liouville equation based on terminal attractors is part of a mathematical formalism for describing postinstability motions of dynamical systems...

Briefs: Mechanical & Fluid Systems
Lunar Constellation of Frozen Elliptical Inclined Orbits

A document discusses the design of orbits of spacecraft for relaying communications between Earth stations and robotic and human explorers in craters in one of the polar regions on the Moon. In simplest terms, the basic problem is to design a constellation of orbits to provide continuous...

Briefs: Photonics/Optics

Practical space-based coherent laser radar systems envisioned for global winds measurement must be very efficient and must contend with unique problems associated with the large platform...

Briefs: Photonics/Optics

The stimulation of nerve tissue is a technique that is used in both research and clinical applications. Neuroscientists use nerve stimulation to study the fundamental principles of the nervous system...

Briefs: Photonics/Optics

Nitrogen lasers have been used for more than 15 years in life science and forensic applications and will continue to play a role in many scientific and industrial applications. But...

Briefs: Photonics/Optics

A method of adaptive signal processing has been proposed as the basis of a new generation of interferometric optical profilometers for measuring surfaces. Many current optical...

Briefs: Photonics/Optics

Faced with increasing demand, manufacturers of power devices, microdisplays, and high-brightness light-emitting diodes (HB-LEDs) are focusing on tightening manufacturing...

Briefs: Photonics/Optics
Improved Photon-Emission-Microscope System

An improved photon-emission-microscope (PEM) instrumentation system has been developed for use in diagnosing failure conditions in semiconductor devices, including complex integrated circuits. This system is designed primarily to image areas that emit photons, at wavelengths from 400 to 1,100 nm,...

Briefs: Physical Sciences
Improved Traps for Removing Gases From Coolant Liquids

Two documents discuss improvements in traps for removing noncondensable gases (e.g., air) from heat-transfer liquids (e.g., water) in spacecraft cooling systems. Noncondensable gases must be removed because they can interfere with operation. A typical trap includes a cylindrical hydrophobic...

Briefs: Medical

Cochlear implants have been used successfully to provide auditory information for bilaterally profoundly deaf patients. This is achieved by electrically...

Briefs: Semiconductors & ICs

Improved low-resistance, semitransparent back contacts, and a method of fabricating them, have been developed for solar photovoltaic cells that are made from thin films of I-III-VI2...

Briefs: Information Technology

A method of automation, and a system of computer hardware and software to implement the method, have been invented to assist en-route air-traffic controllers in the issuance of...

Briefs: Sensors/Data Acquisition

Unmanned Aerial Vehicles (UAVs) — autonomous or remotely controlled pilotless aircraft — have been recently thrust into the spotlight for military applications, for homeland security,...

Products

Novotechnik U.S., Southborough, MA

, has introduced the RFC series of non-contact rotary sensors based on magnetic field technology that have no moving or mechanical parts attached to wear...

Products: Motion Control

Texas Instruments (Dallas, TX) has announced the DCP010507DB, a 1-W isolated, unregulated DC/DC converter, supporting an operating temperature range of -40 °C to 100 °C. The module provides thermal shutdown and...

Products: Motion Control

Balluff (Florence, KY) offers the Micropulse™ BIW transducer that uses a patented, pulsed-inductive technology. It features a wear-free, non-contact design that can be used where linear pots are used, such as plastic...

Products: Motion Control
Accelerometers

Wilcoxon Research (Gaithersburg, MD) has introduced the 788A accelerometers that feature a sensitivity of 100 mV/g. The accelerometer is a single-axis sensor with an acceleration range of +50 g. High-frequency response measurements up to 10 kHz identify faults and improper machine operation. Typical noise is 4 mg at 100 Hz. The...

Products: Motion Control

Performance Motion Devices (Lincoln, MA) has announced the ION™ brushless DC drive, a network-connected motion control drive. The fully enclosed compact module provides network connectivity, power amplification, and...

Products: Robotics, Automation & Control

The LCM 100 accelerometer from Jewel Instruments (Manchester, NH) is designed for industrial, commercial, and aerospace applications. It is engineered with micro-machined components. The 0.5G to 4.0G device meets the needs of...

Products: Motion Control

New Scale Technologies (Victor, NY) offers the SQL Series SQUIGGLE piezo motor that measures 2.4 × 2.4mm and features a metal/ceramic composite construction. The motor holds position when power is turned off, conserving battery...

Products: Robotics, Automation & Control

Festo Corp. (Hauppauge, NY) has introduced the DMES electromechanical linear actuators that provide a feed force of up to 3000 N. The lead screw of the actuators is non-backdriveable, eliminating the need for an additional...

Products: Robotics, Automation & Control

The Torkdisc® rotary torque sensor system from the Force/Torque Division of PCB Piezotronics (Depew, NY) is a compact, in-line rotary torque sensor for spindle qualification testing of machining center and other torque...

Products: Robotics, Automation & Control

PennEngineering® Motion Technologies (Harleysville, PA) offers PITTMAN® brush-commutated DC gearmotors with output torque to 175 oz-in with standard sintered steel spur gearing, and output torque to 500 oz-in by incorporating...

Products: Robotics, Automation & Control

The Vector Series 3005 peristaltic pump from Wanner Engineering (Minneapolis, MN) features a lubricant-filled cavity for constant lubrication, and is capable of continuous duty pumping of harsh liquids at up to 200 PSI. A...

Products: Motion Control

Gurley Precision Instruments (Troy, NY) offers the R158 rotary incremental encoder that generates quadrature square waves at up to 1 million counts per revolution. It has an optional temperature range from -40 to 100 °C, and...

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