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Briefs: Mechanical & Fluid Systems
Cryogenic Feedthrough Test Rig
The cryogenic feedthrough test rig (CFTR) allows testing of instrumentation feedthroughs at liquid oxygen and liquid hydrogen temperature and pressure extremes (dangerous process fluid) without actually exposing the feedthrough to a combustible or explosive process fluid. In addition, the helium used (inert gas), with...
Briefs: Manufacturing & Prototyping
A two-step plasma process has been developed as a means of removing surface oxide layers from indium bumps used in flip-chip hybridization (bump bonding) of integrated circuits. This...
Briefs: Manufacturing & Prototyping
Tool for Crimping Flexible Circuit Leads
A hand tool has been developed for crimping leads in flexible tails that are parts of some electronic circuits — especially some sensor circuits. The tool is used to cut the tails to desired lengths and attach solder tabs to the leads. For tailoring small numbers of circuits for special applications, this...
Briefs: Manufacturing & Prototyping
An improved assembly for inert-gas shielding of a metallic joint is designed to be useable during any of a variety of both laser-based and traditional welding and brazing processes....
Briefs: Materials
Polyimide-Foam/Aerogel Composites for Thermal Insulation
Composites of specific types of polymer foams and aerogel particles or blankets have been proposed to obtain thermal insulation performance superior to those of the neat polyimide foams. These composites have potential to also provide enhanced properties for vibration dampening or acoustic...
Briefs: Materials
Yb14MnSb11 has been found to be well-suited for use as a p-type thermoelectric material in applications that involve hot-side temperatures in the approximate range of 1,200 to...
Briefs: Software
Converting CSV Files to RKSML Files
A computer program converts, into a format suitable for processing on Earth, files of downlinked telemetric data pertaining to the operation of the Instrument Deployment Device (IDD), which is a robot arm on either of the Mars Explorer Rovers (MERs). The raw downlinked data files are in comma-separated-value...
Briefs: Software
Service Management Database for DSN Equipment
This data- and event-driven persistent storage system leverages the use of commercial software provided by Oracle for portability, ease of maintenance, scalability, and ease of integration with embedded, client-server, and multi-tiered applications. In this role, the Service Management Database (SMDB)...
Briefs: Physical Sciences
Chemochromic Hydrogen Leak Detectors
At NASA, hydrogen safety is a key concern for space shuttle processing. Leaks of any level must be quickly recognized and addressed due to hydrogen’s lower explosion limit. Chemochromic devices have been developed to detect hydrogen gas in several embodiments. Because hydrogen is odorless and colorless and...
Briefs: Physical Sciences
A method of calculating (usually for the purpose of maximizing) the power-conversion efficiency of a segmented thermoelectric generator is based on equations derived from the fundamental...
Briefs: Physical Sciences
JPL Greenland Moulin Exploration Probe
A probe was designed to investigate the moulins (melt water drainage channels on an ice cap) and ice-hydrology interaction in the Greenland Ice Cap. By using commercially available components, the strong and reliable system has been developed that has a high-definition video recording element, is lightweight,...
Briefs: Physical Sciences
The complementary barrier infrared detector (CBIRD) is designed to eliminate the major dark current sources in the superlattice infrared detector. The concept can also be applied to bulk...
Briefs: Materials
Room-Temperature Ionic Liquids for Electrochemical Capacitors
A document discusses room-temperature ionic liquids (RTILs) used as electrolytes in carbon-nanotube-based, electrochemical, double-layer capacitors. Unlike the previous electrolyte (EtNB4 in acetonitrile), the RTIL used here does not produce cyanide upon thermal decomposition and does...
Briefs: Materials
Ultra-Lightweight Self- Deployable Nanocomposite Structure for Habitat Applications
A document discusses self-deployable, rigidized structures that are ultra-lightweight and have gas barrier properties, space durability, and high impact resistance. Developed here are microcellular-foamed sandwich structures made from nanocomposite shape memory...
Briefs: Electronics & Computers
A system that includes sensors and data-acquisition, wireless data- communication, and data-processing subsystems has been developed as a means of both real-time and historical tracking of information...
Briefs: Electronics & Computers
An architecture for autonomous operation of an aerobot (i.e., a robotic blimp) to be used in scientific exploration of planets and moons in the Solar system with an atmosphere (such as Titan and Venus) is...
Briefs: Physical Sciences
This compact, lightweight, dual- frequency antenna feed developed for future soil moisture and sea surface salinity (SSS) missions can benefit future soil and ocean...
Briefs: Information Technology
Wireless Avionics Packet To Support Fault Tolerance for Flight Applications
In this protocol and packet format, data traffic is monitored by all network interfaces to determine the health of transmitter and subsystems. When failures are detected, the network interface applies its recovery policies to provide continued service despite the presence...
Briefs: Medical
Biomedical Wireless Ambulatory Crew Monitor
A compact, ambulatory biometric data acquisition system has been developed for space and commercial terrestrial use. BioWATCH (Bio medical Wireless and Ambulatory Telemetry for Crew Health) acquires signals from bio-medical sensors using acquisition modules attached to a common data and power bus. Several...
Briefs: Software
The term “submillimeter confocal imaging active module” (SCIAM) denotes a proposed airborne coherent imaging radar system that would be suitable for use in reconnaissance, surveillance, and...
Briefs: Electronics & Computers
The figure depicts a traveling-wave ruby maser that has been designed (though not yet implemented in hardware) to serve as a low-noise amplifier for reception of weak radio signals in the frequency band of 31.8...
Briefs: Electronics & Computers
A system of electronic hardware and software for synchronizing recordings from multiple, physically separated video cameras is being developed, primarily for use in multiple-look-...
Briefs: Electronics & Computers
The figure shows a dual-beam, dual- polarization Ku-band antenna, the reflector of which comprises an assembly of small reflectarrays arranged in a piecewise-planar approximation of a parabolic...
Briefs: Electronics & Computers
Reducing Interference in ATC Voice Communication
Three methods have been proposed to be developed to enable reduction of the types of interference that often occur among voice-communication radio signals involved in air-traffic control (ATC). For historical reasons and for compatibility with some navigation systems, control towers and aircraft use...
Briefs: Information Technology
EOS MLS Level 1B Data Processing, Version 2.2
A computer program performs level- 1B processing (the term “1B” is explained below) of data from observations of the limb of the Earth by the Earth Observing System (EOS) Microwave Limb Sounder (MLS), which is an instrument aboard the Aura spacecraft. This software accepts, as input, the raw EOS MLS...
Briefs: Software
Auto-Generated Semantic Processing Services
Auto-Generated Semantic Processing (AGSP) Services is a suite of software tools for automated generation of other computer programs, denoted cross-platform semantic adapters, that support interoperability of computer-based communication systems that utilize a variety of both new and legacy communication...
Briefs: Software
Geospatial Authentication
A software package that has been designed to allow authentication for determining if the rover(s) is/are within a set of boundaries or a specific area to access critical geospatial information by using GPS signal structures as a means to authenticate mobile devices into a network wirelessly and in real-time has been...
Briefs: Software
Maneuver Automation Software
The Maneuver Automation Software (MAS) automates the process of generating commands for maneuvers to keep the spacecraft of the Cassini-Huygens mission on a predetermined prime mission trajectory. Before MAS became available, a team of approximately 10 members had to work about two weeks to design, test, and implement...
Briefs: Software
Event Driven Messaging With Role-Based Subscriptions
Event Driven Messaging with Role-Based Subscriptions (EDM-RBS) is a framework integrated into the Service Management Database (SMDB) to allow for role-based and subscription-based delivery of synchronous and asynchronous messages over JMS (Java Messaging Service), SMTP (Simple Mail Transfer...
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