Special Coverage

Soft Robot “Walks” on Any Terrain
Defense Advanced Research Projects Agency
Using Microwaves to Produce High-Quality Graphene
Transducer-Actuator Systems for On-Machine Measurements and Automatic Part Alignment
Wide-Area Surveillance Using HD LWIR Uncooled Sensors
Heavy Lift Wing in Ground (WIG) Cargo Flying Boat
Technique Provides Security for Multi-Robot Systems
Bringing New Vision to Laser Material Processing Systems
NASA Tests Lasers’ Ability to Transmit Data from Space
Converting from Hydraulic Cylinders to Electric Actuators
Automating Optimization and Design Tasks Across Disciplines

Tool Suite Enables Software Testing for Orion Crew Exploration Vehicle

LDRA tool suite
LDRA
San Bruno, CA
650-583-8880
www.ldra.com

Aimed at safely transferring astronauts to and from the International Space Station (ISS), the Moon, Mars, and other destinations beyond low-Earth orbit (LEO), the Orion Crew Exploration Vehicle (CEV) is a state-of-the-art human spaceflight system. Lockheed Martin Corporation has selected the LDRA tool suite for software verification and automated testing on the Orion CEV program, and to enable developers to achieve the stringent safety-critical standards required to ensure safe transfer of the astronauts. NASA has awarded Lockheed Martin a multimillion-dollar contract for Orion’s development.

Posted in: Application Briefs, Software, Computer software / hardware, Computer software and hardware, Computer software / hardware, Computer software and hardware, Tools and equipment
Read More >>

Innovation Begets Innovation

By Robert “Buzz” Kross
Senior Vice President of
the Manufacturing Division
Autodesk
San Rafael, CA

Innovation is a way of life at Autodesk. Since our introduction of AutoCAD software in 1982, Autodesk has developed the broadest portfolio of state-ofthe- art digital prototyping solutions to help customers experience their ideas before they are built.

Posted in: Articles, Software, Research and development
Read More >>

Simulating Operation of a Complex Sensor Network

Simulation Tool for ASCTA Microsensor Network Architecture (STAMiNA) [“ASCTA” denotes the Advanced Sensors Collaborative Technology Alliance.] is a computer program for evaluating conceptual sensor networks deployed over terrain to provide military situational awareness. This or a similar program is needed because of the complexity of interactions among such diverse phenomena as sensing and communication portions of a network, deployment of sensor nodes, effects of terrain, data-fusion algorithms, and threat characteristics.

Posted in: Briefs, Software, Computer simulation, Architecture, Sensors and actuators, Surveillance, Architecture, Sensors and actuators, Surveillance, Military vehicles and equipment
Read More >>

Software Improves Access to Data at NASA Wind Tunnel Facility

Adept document management software
Synergis Software
Quakertown, PA
800-836-5440
www.synergis-adept.com

NASA Ames Research Center’s Unitary Plan Wind Tunnels (UPWT) in Mountain View, CA, is a leader in aeronautics and aerospace wind tunnel testing for NASA, industry, the Department of Defense, and other government agencies. The Unitary Plan Wind Tunnels has deployed Synergis Software’s Adept document management software to improve efficiency and management of their design and engineering documents.

Posted in: Application Briefs, Software, Computer software / hardware, Computer software and hardware, Computer software / hardware, Computer software and hardware, Data management, Test facilities, Wind tunnel tests
Read More >>

Oxidation Behavior of Carbon Fiber-Reinforced Composites

OXIMAP is a numerical (FEA-based) solution tool capable of calculating the carbon fiber and fiber coating oxidation patterns within any arbitrarily shaped carbon silicon carbide composite structure as a function of time, temperature, and the environmental oxygen partial pressure. The mathematical formulation is derived from the mechanics of the flow of ideal gases through a chemically reacting, porous solid. The result of the formulation is a set of two coupled, non-linear differential equations written in terms of the oxidant and oxide partial pressures. The differential equations are solved simultaneously to obtain the partial vapor pressures of the oxidant and oxides as a function of the spatial location and time. The local rate of carbon oxidation is determined at each time step using the map of the local oxidant partial vapor pressure along with the Arrhenius rate equation. The non-linear differential equations are cast into matrix equations by applying the Bubnov- Galerkin weighted residual finite-element method, allowing for the solution of the differential equations numerically.

Posted in: Briefs, TSP, Software, Finite element analysis, Mathematical models, Measurements, Composite materials, Fibers
Read More >>

GIDEP Batching Tool

This software provides internal, automated search mechanics of GIDEP (Government- Industry Data Exchange Program) Alert data imported from the GIDEP government Web site. The batching tool allows the import of a single parts list in tab-delimited text format into the local JPL GIDEP database. Delimiters from every part number are removed. The original part numbers with delimiters are compared, as well as the newly generated list without the delimiters. The two lists run against the GIDEP imports, and output any matches. This feature only works with Netscape 2.0 or greater, or Internet Explorer 4.0 or greater.

Posted in: Briefs, TSP, Software, Computer software / hardware, Computer software and hardware, Data exchange, Computer software / hardware, Computer software and hardware, Data exchange, Parts
Read More >>

Generic Spacecraft Model for Real-Time Simulation

“Generic Spacecraft” is the name of an evolving library of software that provides for simulation of a generic spacecraft that can orbit the Earth and land on the Moon (and, eventually, on Mars). This library is incorporated into the Langley Standard Realtime Simulation in C++ (LaSRS++) software framework. The generic-spacecraft simulation serves as a test bed for modeling spacecraft dynamics, propulsion, control systems, guidance, and displays.

Posted in: Briefs, Software, Computer simulation, Aircraft displays, Spacecraft guidance, Aircraft displays, Spacecraft guidance, Aircraft operations, Spacecraft
Read More >>

Parallel-Processing Software for Creating Mosaic Images

A computer program implements parallel processing for nearly real-time creation of panoramic mosaics of images of terrain acquired by video cameras on an exploratory robotic vehicle (e.g., a Mars rover). Because the original images are typically acquired at various camera positions and orientations, it is necessary to warp the images into the reference frame of the mosaic before stitching them together to create the mosaic. [Also see “Parallel-Processing Software for Correlating Stereo Images,” Software Supplement to NASA Tech Briefs, Vol. 31, No. 9 (September 2007) page 26.]

Posted in: Briefs, Software, Computer software / hardware, Computer software and hardware, Imaging, Imaging and visualization, Computer software / hardware, Computer software and hardware, Imaging, Imaging and visualization, Terrain, Robotics, Spacecraft
Read More >>

Software for Verifying Image-Correlation Tie Points

A computer program enables assessment of the quality of tie points in the image-correlation processes of the software described in the immediately preceding article. Tie points are computed in mappings between corresponding pixels in the left and right images of a stereoscopic pair. The mappings are sometimes not perfect because image data can be noisy and parallax can cause some points to appear in one image but not the other. The present computer program relies on the availability of a left→right correlation map in addition to the usual right→left correlation map. The additional map must be generated, which doubles the processing time. Such increased time can now be afforded in the data-processing pipeline, since the time for map generation is now reduced from about 60 to 3 minutes by the parallelization discussed in the previous article. Parallel cluster processing time, therefore, enabled this better science result. The first mapping is typically from a point (denoted by coordinates x,y) in the left image to a point (x',y') in the right image. The second mapping is from (x',y' ) in the right image to some point (x",y") in the left image. If (x,y) and(x",y") are identical, then the mapping is considered perfect. The perfectmatch criterion can be relaxed by introducing an error window that admits of round-off error and a small amount of noise. The mapping procedure can be repeated until all points in each image not connected to points in the other image are eliminated, so that what remains are verified correlation data.

Posted in: Briefs, TSP, Software, Computer software / hardware, Computer software and hardware, Imaging, Imaging and visualization, Computer software / hardware, Computer software and hardware, Imaging, Imaging and visualization, Data management
Read More >>

Flexcam Image Capture Viewing and Spot Tracking

Flexcam software was designed to allow continuous monitoring of the mechanical deformation of the telescope structure at Palomar Observatory. Flexcam allows the user to watch the motion of a star with a low-cost astronomical camera, to measure the motion of the star on the image plane, and to feed this data back into the telescope’s control system. This automatic interaction between the camera and a user interface facilitates integration and testing.

Posted in: Briefs, Software, Computer software / hardware, Computer software and hardware, Optics, Computer software / hardware, Computer software and hardware, Optics, Human machine interface (HMI), Data management
Read More >>

The U.S. Government does not endorse any commercial product, process, or activity identified on this web site.