Voluntary Consensus Organization Standards for Nondestructive Evaluation of Aerospace Materials (including Additive Manufactured Parts)data.nasa.gov | Last Updated 2020-01-29T03:14:48.000Z
<p>This NASA-industry effort accomplishes the following:</p><p>1) Lead collaboration between NASA Centers, other government agencies, industry, academia, and voluntary census organizations (ASTM Committees E07 on Nondestructive Testing, F42 on Additive Manufacturing (AM) Technologies, and ISO Technical Committee (TC) 261) to develop national standards for NDE of aerospace materials used in NASA/aerospace applications.</p><p>2) Lead a leveraged interlaboratory study (ILS) to develop NDE for qualification and certification of AM parts.</p><p>3) Lead ASTM E07 development and periodic revision of flat panel polymer matrix composite (PMC) standards: ASTM E2533 (Guide) , E2580 (ultrasonic testing (UT) , E2581 (shearography) , E2582 (flash thermography) , E2661 (acoustic emission) , E2662 (radiographic testing (RT)) , and draft work item WK40707 (active thermography).</p><p>4) Lead periodic revision of composite overwrapped pressure vessel (COPV) standards: E2981 (overwrap)  and ASTM E2982 (liner) .</p><p>5) Develop a new NDE of AM Guide (ASTM WK47031) .</p><p>6) Develop a new eddy current test (ECT)-UT-profilometer standard practice or test method for fracture control of metal parts using 90/95 Probability of Detection (POD) of critical initial flaws sizes in metal parts (TBD).</p><p>7) Respond to NASA Office of Safety and Mission Assurance (OSMA) and NASA Space Technology Mission Directorate (STMD) requests as needed (e.g., AM, advanced manufacturing, counterfeit parts and ESA/JAXA collaboration).</p><p>The historical standards development time line (Items 3 through 6) is shown in <strong>Figure 1</strong>. The WK47031 effort (Item 5) constitutes the bulk of the present focus and capitalizes on momentum created by the release of the FY14 <em>Nondestructive Evaluation of Additive Manufacturing</em> <em>State-of-the-Discipline Report </em>(NASA-TM-218560) . The ultimate goal vis-à-vis WK47031 is to determine the effect-of-defect of specific seeded flaw types while determining detection thresholds using controlled embedded features. A portion of this effort also dovetails with the NASA Engineering and Safety Center (NESC) Universal ECT-UT-Profilometer Scanner project.</p> <p><strong>Background:</strong> One of the main obstacles slowing the acceptance and use of advanced materials (e.g., PMCs, COPVs and AM parts) in NASA and commercial space applications is the lack of a broadly accepted materials and process quality systems, including sensitive NDE procedures with well-defined accept-reject criteria. Matching VCO standards are also needed to ensure process and equipment control, finished part quality and consistent inspection methodologies for finished parts after manufacturing and after installation of parts in service. In AM, the possibility to ‘design to constraint’ offers a paradigm shift opening the door to make parts with shorter production lead times, less waste, improved cost, maximized properties, and reduced weight. However, to fully realize the merits of this and other advanced processing technologies, and to ensure parts of the highest quality end up in NASA/aerospace applications, new approaches to for in-situ monitoring NDE used during manufacturing, post-process NDE used on as-build and finished parts are needed. In AM, for example, NDE procedures must be able to detect flaw types (<strong>Figure 2</strong>), many of which are not found in cast, wrought or conventionally welded parts (<strong>Figure 3</strong>). Deeply embedded porosity, complex part geometry, and intricate internal features (e.g., lattice structures) impose additional challenges on conventional NDE.</p><p> </p><p><strong>Technical Approach: </strong> In the WK47031 effort (<strong>Figure 4</strong>), a NASA-led interlaboratory study (ILS) is currently being conducted to identify and refine NDE for inspection of AM aerospace parts. This effort is spread across g
- API data.nasa.gov | Last Updated 2020-01-29T04:57:20.000Z
This dataset is comprised of asteroid flux data measured in 26 filters using the McCord dual beam photometer, and covering the range 0.32 - 1.08 microns for 285 numbered asteroids, as published in Chapman & Gaffey (1979b) and McFadden, et al. (1984).
- API data.nasa.gov | Last Updated 2020-01-29T01:43:16.000Z
The proposed 45 nm radiation hardened platform based structured ASIC architecture offers the performance and density expected of a custom ASIC with the low manufacturing cost associated with a structured ASIC. The low cost, high performance customization of the structured ASIC portion of the chip is made possible by the 1-D 45 nm Mask-Lite process technology.
AirMSPI verison 6 terrain-projected georegistered radiance product acquired during the SPEX-PR flight campaigndata.nasa.gov | Last Updated 2019-12-12T23:49:02.000Z
AirMSPI_SPEX-PR_Terrain-projected_Georegistered_Radiance_Data is an AirMSPI terrain-projected georegistered radiance product acquired during the SPEX engineering flights + Porter Ranch gas leak overflights (SPEX-PR) flight campaign. AirMSPI Level 1B2 products contain radiometric and polarimetric images of clouds, aerosols, and the surface of the Earth. In particular, products contain map-projected data at 8 wavelengths: 355, 380, 445, 470, 555, 660, 865, and 935 nm. The data products include radiance, time, solar zenith, solar azimuth, view zenith, and view azimuth for all spectral bands. Wavelengths for which polarization information is available (470, 660, and 865 nm) also include the Stokes parameters Q and U, as well as degree of linear polarization (DOLP) and angle of linear polarization (AOLP). Q, U, and AOLP are reported relative to both the scattering- and view meridian planes. Files are distributed in HDF-EOS-5 format. This release of AirMSPI data contains all targets acquired during the SPEX engineering flights + Porter Ranch gas leak overflights (SPEX-PR) flight campaign, which was based out of Armstrong Flight Research Center in Palmdale, CA. The SPEX engineering flights conducted on February 2 through February 5, 2016 focused on the checkout of another polarimeter, SPEX airborne, built by SRON Netherlands Institute for Space Research, with AirMSPI providing validation. On February 9, the ER-2 overflew the Porter Ranch, California natural gas leak with AirMSPI and the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) collecting data.
- API data.nasa.gov | Last Updated 2020-01-29T02:14:25.000Z
The objective of this research is to create a suite of tools for monitoring airport gate activities with the objective of improving aircraft turnaround. Airport ramp areas are the most crowded and cluttered spaces in the entire National Airspace System (NAS). Activities related to turnaround of the aircraft from the gate represent a significant source of delay and therefore impact the predictability of NAS operations. Optimal Synthesis Inc., seeks to leverage its expertise in monitoring aircraft in the ramp areas using video surveillance data and advanced computer vision algorithms towards building an advanced gate activity monitoring that will in turn enable a gate turnaround prediction tool. The tool suite will specifically identify the various stages of turnaround such as refueling, luggage unloading/loading, catering, and deicing. It will further create a probabilistic model of the times associated with each of these events, that will be used for predicting the future sequence of events and their predicted times of completion. Phase I research will demonstrate the core ideas of gate activity recognition using state-of-the-art computer vision and machine learning algorithms. Phase II research will elevate the technology readiness level of this tool suite to work with real-time video surveillance streams.
- API data.nasa.gov | Last Updated 2020-01-29T04:05:26.000Z
Resident of a smart home, who may be an old person or an Alzheimer patient needing permanent assistance, actuates the world by realizing activities, which are observed through the embedded sensors of smart home. Typically, this person may sometimes forget completion of the activities; may realize the activities of daily living incorrectly, and may enter to dangerous states. In order to provide automatic assistance for the smart home resident through the embedded electronically controllable actuators and make the smart home resident able to live independently at home we propose to calculate a possibilistic logical space for correct realization of activities, which may be represented in form of a multivariable problem. Regardless from the physical entity (modality and location) of the intelligence source and the quantity of individuals who perform the activities; per each possible goal or activity, we consider a unique source of intelligence (for example a social mind) who directs the order of fuzzy events that occur in the ambient environment, then the plan behind world actuations is modeled applying extensions of the fuzzy logic. The main key point that we deal with is the analysis of the observations in order to make inferences about possible simultaneous activities that may be planned and realized by one or more individuals; so that we can reason in the cases the parallel activities are interrupted.
- API data.nasa.gov | Last Updated 2019-12-12T23:50:21.000Z
CAL_LID_L2_VFM-ValStage1-V3-01 data are Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) Lidar Level 2 Vertical Feature Mask data. The Lidar Level 2 Vertical Feature Mask data product describes the vertical and horizontal distribution of cloud and aerosol layers observed by the CALIPSO lidar. Cloud and aerosol discrimination for detected features is reported as a single value, the CAD_Score. Version 3.01 of the Lidar Level 2 data products major code and algorithm improvements include:-the elimination of a vicious, vile, and pernicious bug in the cloud clearing code that caused a substantial overestimate of low cloud fraction in earlier data releases (details given in Vaughan et al., 2010); -enhancements to the cloud-aerosol discrimination algorithm that increase the number of diagnostic parameters used to make classification decisions (details given in Liu et al., 2010); -improved daytime calibration procedures, resulting in more accurate estimates of layer spatial and optical properties (details given in Powell et al., 2010); and -an entirely new algorithm for assessing cloud thermodynamic phase (details given in Hu et al., 2009). Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) was launched on April 28, 2006 to study the impact of clouds and aerosols on the Earth's radiation budget and climate. It flies in the international A-Train constellation for coincident Earth observations. The CALIPSO satellite comprises three instruments, the Cloud-Aerosol LIdar with Orthogonal Polarization (CALIOP), the Imaging Infrared Radiometer (IIR), and the Wide Field Camera (WFC). CALIPSO is a joint satellite mission between NASA and the French Agency, CNES.
- API data.nasa.gov | Last Updated 2020-01-29T01:59:10.000Z
Triton Systems, Inc. (Triton) proposes to develop a cost-effective manufacturing approach to fabricate combustion chambers for a rocket technology demonstrator engine. The proposed manufacturing process combines Triton's success in fabricating high strength, ductile, discontinuous fiber reinforced aluminum (FRA) composites and rapid prototyping techniques used in the aluminum casting industry. The ability to insert Triton's FRA technology into boost and orbit transfer components supports critical propulsion goals by improving the thrust-to-weight ratio and reducing hardware costs. Significant weight savings will be achieved with Triton's lightweight FRA technology compared to the current nickel superalloy. Hardware costs savings are anticipated with the use of a proven, affordable and high quality casting process to fabricate FRA materials. An added benefit is the ability to incorporate design changes for improved efficiency and/or research and development efforts.
NASA Energy and Water cycle Study (NEWS) Monthly Climatology of the 1st decade of the 21st Century V1.0 (NEWS_WEB_MCLIM) at GES DISCdata.nasa.gov | Last Updated 2019-12-13T00:23:33.000Z
NASA Energy and Water cycle Study (NEWS) Climatology of the 1st decade of the 21st Century Dataset summarizes the original observationally-based mean fluxes of water and energy budget components during the first decade of the 21st Century, for each continent and ocean basin on monthly and annual scales as well as means over all oceans, all continents, and the globe. A careful accounting of uncertainty in the estimates is included. Also, it includes optimized versions of all component fluxes that simultaneously satisfy energy and water cycle balance constraints. The NEWS Climatology contains two data products: an annual climatology data product and a monthly climatology data product. This data product is the monthly climatology product. The climatology base period is roughly 1998-2010, where individual datasets cover various periods starting as early as 1998 and as late as 2002, not all extending to 2010. The continents and ocean basins boundaries map is used in this study to compute regional means. The ocean basin data was provided by Kyle Hilburn and Chelle Gentemann at Remote Sensing Systems. The land portion and some inland water bodies of the data are delineated into continents according to general definitions found in Wikipedia and relevant past studies. The data are distributed with four different units (1000 km^3/month, W/m^2, cm/month, and mm/day), in three formats (NetCDF, xlsx, and csv).
- API data.nasa.gov | Last Updated 2020-01-29T01:45:46.000Z
One of the most demanding and high-stakes crew tasks aboard the International Space Station (ISS) is the capture of a visiting spacecraft by manual operation of the Space Station Robotic Manipulator System (SSRMS, or Canadarm2). The cost of a missed capture or improper arm/vehicle contact is likely to be very high. Since these operations may be performed up to six months after the most recent ground-based training, crews aboard the ISS prepare for such manual robotic tasks with the Robotics On-Board Trainer, a laptop-based graphical/dynamic simulator using NASA Dynamic Onboard Ubiquitous Graphic (DOUG) software from Johnson Space Center's Virtual Reality Laboratory. This system, however, does not utilize any real-world, 3-D, out-the-window views. Building upon recent advances in head-mounted augmented reality systems, the team of Systems Technology, Inc. and Dr. Stephen Robinson of UC Davis propose the Station Manipulator Arm Augmented Reality Trainer (SMAART) that will offer ISS crews significantly more realistic on-board refresher training for vehicle capture by manipulating the actual SSRMS with real out-the-Cupola-window views, but with a graphically-simulated vehicle overlaid on the astronaut's non-simulated view via a head-mounted display. Providing multi-sensory realism in on-board training for such high cognitive-demand skills is expected to increase crew readiness and therefore reduce operational risk for visiting vehicle capture.