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Briefs: Energy
Polymeric electrolytes for rechargeable lithium-based electrochemical cells and batteries would be made by blending and complexing cyanoresins with lithium salts, according to a proposal....
Briefs: Software
Software for Monitoring Performance of Other Software
Performance Logging Services (PLS) is a software utility that tracks the performance of another program in terms of statistics of timing and use of memory buffers. The monitored program must utilize either the UNIX or the VxWorks operating system. PLS can monitor performance requirements in real...
Briefs: Software
Software for Multidisciplinary Analysis With Parallelization
HiMAP is an advanced, portable software system that implements highly modular, parallel computation of the possibly nonlinear, coupled behaviors of aeroelastic and other complex systems that comprise subsystems, each of which is modeled by use of software formulated within a separate...
Briefs: Software
ICAN/JAVA: Integrated Composite Analyzer Recoded in Java
The Integrated Composite Analyzer (ICAN) computer program, originally written in the FORTRAN language, has been completely recoded in Java to make it more widely usable. Whereas the original ICAN could be executed on only a limited number of platforms, ICAN/JAVA is compatible with almost all...
Briefs: Software
Software for Onboard Autonomy of a Three-Spacecraft Mission
A system of software has been designed to enable autonomous operations of the three University-built miniature spacecraft of the Three Corner Sat mission, scheduled for launch in 2003. The main software subsystems and their functions are the following:
Briefs: Software
Software for Mobile Data-Communication Networks
Mobile Router is operating system code residing in a network router allowing the router to provide mobile-ipv4 functionality for any attached nodes. Mobile Router enables the entire network to roam. It is no longer necessary for every node in the network to run mobile Internet Protocol (IP) software...
Briefs: Software
Runge-Kutta Circular-Advection-Problem Solver
Release 3.0 of the Multi-Stage Runge-Kutta Circular Advection Solver is a computer program that solves the circular-advection problem by use of a general m-stage Runge-Kutta scheme (for m = 1, 2, and 4) on a Cartesian (x,y) grid with optimized coefficients. [The circular-advection problem, ¶u/¶t =...
Briefs: Software
Software Optimizes Piping System for Sewage Treatment Plant
A $90 million AUS (Australian dollar) upgrade ($49 million USD) to the Cronulla Sewage Treatment Plant in Southern Sydney, Australia, was undertaken to meet the requirements of a growing population and to add advanced sewage treatment processes including ultraviolet disinfection. During...
Briefs: Manufacturing & Prototyping
A micromachining-based fabrication process has been proposed for low-volume production of copies of a mesoscale vibratory gyroscope. The process would include steps of photolithography,...
Briefs: Manufacturing & Prototyping
A curved tile of refractory silica-fiber-based or alumina-fiber-based thermal-insulation material can be formed from an initially flat billet in a process that includes pressing against...
Briefs: Mechanical & Fluid Systems
Optimization of Orientations of Spacecraft Reaction Wheels
A report presents a method of optimizing the orientations of three reaction wheels used to regulate the angular momentum of a spacecraft. The method yields an orientation matrix that minimizes mass, torque, and power demand of the reaction wheels while maximizing the allowable duration...
Briefs: Physical Sciences
The figure depicts selected aspects of a "smart" microelectronic-based hazardous-gas-detection system that simultaneously measures concentrations of hydrogen and oxygen. Unlike...
Briefs: Materials
Lightweight Foam Pads for Helmets
Special foam pads have been developed for use in helmets. The foams in these pads have been formulated to obtain a combination of light weight, resistance to oxidation, flame retardance, superior shock-absorbing properties, and physical comfort during long use. In the original application, the pads are intended...
Briefs: Materials
Water-Borne, Silicone-Based, Primerless Paints
Water-borne, silicone- based paints for protecting metal structures against corrosion have been developed as substitutes for traditional anticorrosion paints that contain large amounts of volatile organic solvents. It is desirable to reduce the volatile-organic-compound (VOC) contents of paints in...
Briefs: Software
Computer Code for Analyzing Piezoelectric Composite Shells
SMARTSHELL is a finite-element computer program for analyzing composite-material propulsion-system structural components (including shells) that are characterized as “smart” because they contain integral piezoelectric sensors and/or actuators. The program implements a unique mixed-field...
Briefs: Materials
A γ titanium aluminide alloy produced by a powder-metal (PM) process, and techniques for fabricating sheets and sheet-metal components from the alloy, have been developed. The alloy and...
Briefs: Manned Systems
Pipes made of graphite-fiber/epoxymatrix composites have been shown to be suitable as conduits for liquid hydrogen. Conceived for as replacements for heavier metallic liquid-hydrogen feedlines in...
Briefs: Materials
Refractory, Oxidation-Resistant Ceramic/Carbon Insulation
Lightweight, refractory ceramic/carbon thermal-insulation materials have been invented. These materials, consist of carbon, silicon, and oxygen in suitable pro- portions combined into molecular structures that are stable at high temperatures. Insulating tiles and other components made of...
Briefs: Software
Analyzing Loads and Strains in Polymer-Matrix Composites
Strain Rate Dependent Analysis of Polymer Matrix Composites (STRANALPMC) is a computer program for analyzing strain-rate-dependent, nonlinear deformation and failure responses of composite materials in which the matrices are ductile polymers. Modified versions of the Ramaswamy-Stouffer...
Briefs: Electronics & Computers
The synthesis of some fuzzy-logic circuits by use of evolvable hardware (EHW) has been demonstrated in an investigation of EHW as a means of auto- mated synthesis of...
Briefs: Electronics & Computers
Improved Circularly Polarized Microstrip Antenna
Two modifications improve the performance of a circularly polarized microstrip-patch-array antenna described in U.S. Patent 5,661,994. Because the phase difference between the orthogonal sides in the original design was 135°, there was substantial cross-polarization and waste of power. One...
Briefs: Electronics & Computers
Direct Methanol Fuel Cells for Low-Power Applications
Direct methanol fuel cells integrated with fuel reservoirs have been proposed as power sources in applications that involve power demands up to about 50 W. A prior concept of direct methanol fuel cells as alternatives to re- chargeable batteries in such applications was reported previously in...
Briefs: Electronics & Computers
Lithium-Ion Batteries for Demanding Applications
High-performance lithium-ion electro- chemical cells and batteries have been developed to satisfy a need for longer lifetimes and greater capacities in the power supplies of the life-support systems attached to space suits. These and similar cells and batteries could also be used on Earth to satisfy...
Briefs: Software
Software for an Autonomous Constellation of Satellites
The Autonomous Sciencecraft Constellation (ASC) software has been developed for Techsat-21 — a group of small satellites, to be launched by the Air Force Research Laboratory in 2004, intended to demonstrate the feasibility of groups of satellites cooperating in the performance of tasks. The...
Briefs: Software
Training by Use of Games Played via the Internet
A software system that resides on a server delivers training via the Internet to users of client computers. Admin- istrators can also interact with the system via client computers. The training lessons are in the form of trivia games, which are implemented by a game-engine software subsystem that is...
Briefs: Software
Software for Designing Thermal Protection for Spacecraft
Traj and Traj.CGI are computer programs for designing thermal-protection systems (TPSs) for spacecraft that must survive re-entry into planetary atmospheres. Together with a separately developed program denoted FIAT, Traj and Traj.CGI are integral parts of NASA’s Entry Vehicle Integrated...
Briefs: Software
Software for Validating Planetary Data Volumes
The PDS Validation Toolkit is an integrated set of scripts and computer programs for determining whether data recorded on compact disk (CD) or digital video disk (DVD) conform to the standards of the Planetary Data System (PDS). The software provides both command- line and graphical user interfaces,...
Briefs: Software
Java Version of Embedded Web Software Server
Tempest is a computer program that functions as a HyperText Transfer Protocol (HTTP) server for embedded systems. Tempest enables remote command and control of embedded systems. Tempest accepts HTTP requests from standard Webbrowser programs running on remote client computers and returns HyperText Markup...
Briefs: Software
Image Display Component of JADE
A Java bean that offers high performance display of images has been developed as a component of the Java Advanced Display Environment (JADE) computer program.
This component works asynchronously, loading and/or computing image tiles as needed in background threads. In so doing, it enables a main...
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