- 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 2020-01-29T02:00:35.000Z
The main goal of spacecraft thermal control systems is to maintain internal and external temperature within acceptable boundaries while minimizing impact on vehicle mass, complexity and operability. Paragon is proposing to develop an integrated radiator/structure design approach that will permit efficient thermal performance of the integral radiator while simultaneously serving as a load bearing structure member. The innovation in the proposed design is to integrate the radiator within the stressed skin of the vehicle thereby achieving a superior lb/sq ft penalty over conventional designs while establishing a baseline coating system that will survive the ground, launch pad and ascent environments. An additional possibility will be to achieve survival of coatings in a leeward reentry environment for added benefit to reusable OSP concepts. Our proposal would advance the state-of-the-art in integral radiator designs for conformal structure applications by reducing the key technology development risks so they can be considered for the next generation manned space systems, such as the OSP, as well as other applications. The central objective of the combined Phase I and Phase II work plan is to take load bearing, environmentally compatible radiator designs from the present position of TRL 3, to TRL 5 or 6.
- 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.
- API data.nasa.gov | Last Updated 2020-01-29T02:14:21.000Z
Our proposal and the Phase I work completed under it addressed these NASA-identified needs by providing software infrastructure that provides physical scientists a "plug-and-play" architecture in which they can insert their "physics kernels" and exploit very large existing code bases for the computer science aspects of the problem. In particular, our STTR product provides cutting-edge adaptive mesh refinement (AMR) capabilities, and our Phase I results demonstrate the ability of our software architecture to run existing physics code with the newly incorporated AMR driver. Our innovative solution to the problem delivered significant value to NASA at a relatively small cost by combining existing open source tools. In Phase I, we built an interface, which we call Parca, between the Paramesh computational libraries, developed at NASA GSFC to support AMR computations in the area computational hydrodynamics, and the Cactus computational toolkit, which is an infrastructure package developed by Louisiana State University that provides a "plug-and-play" framework for cross-institution and cross-disciplinary scientific codes. Both of these software packages have large user bases in the areas of computational fluid dynamics and numerical general relativity, and both had existing users at NASA GSFC. Prior to our Phase I work, there was no way these user communities to collaborate directly, leading each user group to redevelop software already available in the other user community.
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).
Space PV Concentrators for Outer Planet and Near-Sun Missions, Using Ultra-Light Fresnel Lenses Made with Vanishing Tools, Phase Idata.nasa.gov | Last Updated 2020-01-29T04:53:01.000Z
<p style="margin-left:0in; margin-right:0in"><strong>Identification and Significance of the Innovation</strong></p> <p style="margin-left:0in; margin-right:0in">Under recent NASA SBIR, STTR, and other programs, our team has developed both line-focus and point-focus Fresnel lens PV concentrators with unprecedented performance and cost metrics. This new Phase I proposal addresses a remaining mass-production issue for the ultra-light lenses used in both line-focus and point-focus embodiments of the space PV concentrator technology. After casting the silicone lens, removing the lens tool is difficult, time-consuming, and often damaging to the lens. A vanishing lens tool would completely solve this problem, making high-quality, mass-producible, low-cost, ultra-light Fresnel lenses available for future space PV concentrators. These concentrators offer unrivaled benefits for outer planet and near-sun missions, especially in rad-hardness, LILT-tolerance, and HIHT-tolerance.</p> <p style="margin-left:0in; margin-right:0in"><strong>Technical Objectives, Work Plan, and Deliverables</strong></p> <p style="margin-left:0in; margin-right:0in"><strong>Technical Objectives:</strong> To (1) Select Candidate Vanishing Lens Tool Materials, (2) Procure Electroform Replicas of 25X Point-Focus Lens Pattern, (3) Produce Vanishing Lens Prototype Tools, (4) Produce and Inspect Lenses (Glass Superstrate and Mesh), (5) Outdoor-Test Best Lenses for Optical Efficiency, (6) Select Best Vanishing Lens Tool Material, (7) Produce 10 Prototype Vanishing Lens Tools, (8) Produce and Outdoor-Test 10 Lenses, (9) Explore Mass Production of Vanishing Lens Tools from Selected Material with Vendors, (10) Prepare Technology Development Roadmap for Phase II and Beyond, (11) Provide All Required Reports, Reviews, and Deliverables.</p> <p style="margin-left:0in; margin-right:0in"><strong>Work Plan</strong>: Over a 6-month performance period, we will perform 11 tasks linked directly to the 11 objectives.</p> <p style="margin-left:0in; margin-right:0in"><strong>Deliverables:</strong> 3 Program Reviews, 2 Program Reports, 10 Lenses (5 Glass Superstrate + 5 Embedded Mesh), and Phase II Proposal</p>
MERRA-2 tavg1_2d_lfo_Nx: 2d,1-Hourly,Time-Averaged,Single-Level,Assimilation,Land Surface Forcings 0.625 x 0.5 degree V5.12.4 (M2T1NXLFO) at GES DISCdata.nasa.gov | Last Updated 2019-12-13T00:20:49.000Z
The Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2) is a NASA atmospheric reanalysis for the satellite era using the Goddard Earth Observing System Model, Version 5 (GEOS-5) with its Atmospheric Data Assimilation System (ADAS), version 5.12.4. The MERRA project focuses on historical climate analyses for a broad range of weather and climate time scales and places the NASA EOS suite of observations in a climate context. MERRA-2 was initiated as an intermediate project between the aging MERRA data and the next generation of Earth system analysis envisioned for the future coupled reanalysis. Without a substantial investment to update MERRA's data assimilation routines, the system lacked the capability to analyze the latest observations. In addition, numerous advances to the GEOS5 system had been implemented since freezing the MERRA system in 2008. Therefore, a new full reanalysis integration was undertaken. MERRA-2 covers the period 1980-present, continuing as an ongoing climate analysis as resources allow. Sign Up for the MERRA-2 Mailing List Sign up for the MERRA-2 listserv to receive announcements on the latest data information, tools and services that become available, data announcements from GMAO and more! Contact the GES DISC User Services (firstname.lastname@example.org) to be added to the list. MERRA-2 Science Data and Data Processing Questions Do you have a question about MERRA/MERRA-2? Take a look at the File Specification Document (https://gmao.gsfc.nasa.gov/pubs/docs/Bosilovich785.pdf) and if that doesn't answer your question, users can contact staff with questions on the data, data processing and science. Send questions to email@example.com.
- API data.nasa.gov | Last Updated 2020-01-29T01:56:52.000Z
Future small-spacecraft thermal engineers and integrators will contend with increasing spacecraft power and temperature variations resulting from challenging new missions in extreme environments. The LoadPath High heat flux Enhanced Acquisition and Transport system for Small spacecraft (HEATS) is an innovative, passive, two-phase thermal transport system that will help realize these missions of tomorrow. Unlike state-of-the-art thermal transport systems (e.g. heat pipes and loop heat pipes), our approach can mitigate higher heat loads and fluxes at a lower cost and mass while adapting to a wider-range of heat source/sink configurations.
- API data.nasa.gov | Last Updated 2020-01-29T03:59:23.000Z
Electrically Variable Compact Optical Remote Imaging Spectroscopic Filter, Phase I
- API data.nasa.gov | Last Updated 2020-01-29T04:52:46.000Z
By the end of this year, we intend to have a two inch diameter, operational test article which continuously generates a symmetric plasma discharge. We intend to ensure this symmetry by adding a magnet to the original one inch diameter design which was used to demonstrate this shock wave attenuation effect in an earlier wind tunnel test. We will be testing a slightly larger model in order to better instrument the test article. This larger model will also add to our understanding of how the size of the model affects the amount of power needed to attenuate the shock waves. We also intend to demonstrate that the discharge from this new model significantly attenuates any shock waves generated at flight relevant conditions in a supersonic wind tunnel. The next step after this year is to mount this test article to the "Big Red" flight test fixture underneath a NASA F15, fly at Mach 1.6 at 31kft, 32kft and 33kft and possibly Mach 1.8 at 33kft. And use AirBOS to image the shockwaves coming off of the model with plasma on and plasma off.