Keyword: Terminology

Articles: Motion Control

When choosing a gas spring for a particular application, it’s imperative to have a basic understanding of the workings and terminology used when specifying gas springs. This article offers...

Briefs: Data Acquisition
Selective Access and Editing in a Database

NASA has developed a method and system that provides selective access to different portions of a database by different subgroups of database users. In this system, two or more members of a given access subgroup can simultaneously edit a document accessible to each member. This database system provides...

Briefs: Robotics, Automation & Control

A software system was developed that helps robots more effectively act on spoken instructions — no matter how abstract or specific those instructions may be — from people who...

Application Briefs: Photonics/Optics

The effectiveness of airborne search and rescue, navigation, and situational awareness tasks is predicated on the availability of high-resolution imagery that provides pilots with a clear...

Briefs: Software
RAYGUN Fast Generic Geometry Raycasting Tool

When performing spacecraft simulations, developers sometimes need to feed the simulation with a distance between two objects along a certain direction vector. For example, if a spacecraft is approaching an asteroid and needs to simulate a laser rangefinder, the simulation would need to detect what...

Briefs: Green Design & Manufacturing
Obs4MIPS.py

The Obs4MIPS.py software package is a front end to an existing free software package written by Lawrence Livermore National Lab, called “Climate Model Output Rewriter” (CMOR2), and reads in a multitude of standard data formats such as netcdf3, netcdf4, Grads control files, MATLAB data files, or a list of netCDF files. The...

Technology Leaders: Photonics/Optics

By detecting very subtle temperature differences of everything in view, infrared technology reveals what otherwise would be invisible to the naked eye.

Briefs: Test & Measurement

NASA’s Langley Research Center researchers developed DAMAS using an iterative algorithm to deconvolute noise signals, allowing for more...

Briefs: Software
Common Workflow Service: A Standards-Based Process Management System

As mission operations grow in scale and complexity, there is a prevailing need for automating operational processes to increase efficiency, mitigate risks, and reduce operational costs. The need for automating operational processes has produced a few disparate automation...

Briefs: Software

The problem that motivated this work was one of analyzing hundreds of thousands of records of historical problem failure reports (aka, problem reports and corrective actions — PRACA) for improved mission safety....

Briefs: Software
The K Development Language

Graphical modeling tools have gained popularity within engineering communities, but such languages are known to suffer from lack of semantics and mathematical rigor. By supporting a graphical language with a textual language, and mapping graphical models to the textual language, one ensures proper unique semantics of...

Application Briefs: Imaging

The “always-true” use case for 360º vision systems is to avoid blind spots. Blind spots are a byproduct of conventional cameras. They have a limited field of view and they only see in the...

INSIDER: Electronics & Computers

Researchers at the University of Liverpool have developed a set of algorithms that will help teach computers to process and understand human languages.

While mastering natural...

Briefs: RF & Microwave Electronics
Simple Impedance Matched Planar Microwave Blocking Filter

Thermal blocking filters find wide use in cryogenic applications ranging from quantum computing to ultra-low-noise detectors. They can be used to provide the environmental isolation between cooled devices and the warmer temperature supporting bias and readout circuitry. In particular,...

Briefs: Manufacturing & Prototyping
Fabrication of an Integrated Photonic Waveguide Joint in Micromachined Silicon

High-aspect-ratio silicon structures are necessary components in many MEMS (microelectromechanical systems). Aspect ratio is defined as the ratio of the height of the structure to its lateral width. The structures are typically fabricated through bulk micromachining...

Briefs: Information Technology
BUMPER-CEV Micrometeoroid and Orbital Debris Risk Assessment Code Rev. A

BUMPER-CEV Version 1.71 is used to perform micrometeoroid/orbital debris (MMOD) risk assessments for the Orion Multi-Purpose Crew Vehicle (MPCV) spacecraft. BUMPER is the primary risk analysis program used by NASA to provide for reliable and safe operations of spacecraft...

Briefs: Software
AMMOS-PDS Pipeline Service (APPS) — Label Design Tool (LDT)

A software program builds PDS4 science product label (metadata) and automatically generates its description as part of the software interface specification (SIS) document. This software allows the mission system engineer to interact programmatically with the PDS4 information model,...

Briefs: Software
Spitzer Integrated Resource Planning and Scheduling System (SIRPASS)

This decision support system provides an integrated platform for assessing the quality of Spitzer scheduling options. The application aids in scheduling instrument selection, assigns schedule times to specific observation requests, and generates stored sequence products...

Briefs: Information Technology
Dictionary Management System

The Dictionary Management System (DMS) is a Web-based tool to develop and store a project command and telemetry dictionary. The dictionary defines a project’s flight/ground interface. In recent years, dictionaries have become very large, making it hard to maintain traditional methods of flat-file storage and manual...

Briefs: Information Technology
Database Design for Storing Software Entity Metadata, User Identification, and License Terms

The NASA Space Telecommunications Radio System (STRS) specification cites a plan for an application repository, similar to an “app store,” but with a wide variety of licensing restrictions on access to different applications, and even different parts...

Briefs: Information Technology
Selective Access and Editing in a Database

A complex organization with many tasks and sub-tasks, many phases, and many workers often will have an associated database with many users and groups, each of whom has a limited “need to know” (e.g. fine-grained security access controls) that does not extend to all information in the database. A...

Briefs: Software
Integrated Science Instrument Module (ISIM) Reconfigurable Packet Tool

This tool supports the development of table loads required to inform the flight software of new on-the-fly packet definitions. The main outcome of the processing includes all the database products needed by the ground system to process the newly created packets. The tool...

Briefs: Manufacturing & Prototyping
Method for Providing Semiconductors Having Self-Aligned Ion Implant

This is a modification to technology for realizing durable and stable electrical functionality of high-temperature transistors. This modification is believed crucial to experimental implementation of SiC junction field effect transistors that electrically operated continuously...

Briefs: Aerospace
Airborne Coordinated Conflict Resolution and Detection (ACCoRD) Framework

To accommodate the predicted increase in air traffic, the next generation of air traffic management (ATM) systems relies on operational concepts where the responsibility for separation is distributed between airborne and ground systems. These distributed modes of operation...

Briefs: Information Technology
Developing Web and Mobile Applications Integrated with Systems Utilizing the Object Management Group’s Data Distribution Service

Several software application development tools exist that enable the rapid development of Web applications. Among other things, Web applications greatly enhance the human-computer interaction (HCI) required by many...

Briefs: Communications

Policy negotiation is the process of determining the “best” communication protocol that satisfies all requirements of all parties involved. The main challenge here is how to reconcile the various (and...

Briefs: Information Technology
A Model-Driven Science Data Product Registration Service

The Planetary Data System (PDS) has undertaken an effort to overhaul the PDS data architecture (e.g., data model, data structures, data dictionary, etc.) and deploy a software system (online data services, distributed data catalog, etc.) that fully embraces the PDS federation as an...

Briefs: Information Technology
Rapid Prototyping Lab (RPL) Generic Display Engine

Spacecraft display software is very costly and requires extensive testing and certification. Much testing must be repeated if the display software is changed in any way. Additionally, hand-coded displays are costly to create and maintain. For certain types of display formats with limited...

Briefs: Information Technology
Large Eddy Simulation Composition Equations for Two-Phase Fully Multicomponent Turbulent Flows

Liquid sprays are commonly used to inject fuels into combustion devices, making it important to study multicomponent (MC) two-phase flows in order to reveal their physics. “Multicomponent” is the terminology describing all fuels that are...