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- API nasa-test-0.demo.socrata.com | Last Updated 2015-07-20T05:16:26.000Z
Advanced EVA suits for space exploration will need a portable life support system (PLSS) that is compact, lightweight, highly reliable, and meets stringent requirements for oxygen safety. A key component is a blower that circulates gas through the space suit ventilation loop. We propose to develop an innovative blower that can meet the challenging requirements for circulating ventilation gas in an EVA suit using a reliable system that consumes little power. The innovative design enables use of a wide range of materials that can be selected to maximize safety in an oxygen environment. In Phase I we proved the feasibility of our approach by testing and optimizing blower components, producing a conceptual design for the blower and motor, and demonstrating a proof-of-concept blower under prototypical conditions. In Phase II we will optimize the blower and motor designs to achieve small size and maximum efficiency while meeting requirements and constraints for operation in exploration space suits. We will demonstrate lifetime and reliability of critical components in a prototypical oxygen environment and deliver a prototype blower that can be used in system tests of advanced portable life support systems.
- API nasa-test-0.demo.socrata.com | Last Updated 2015-07-20T04:55:51.000Z
This data set contains the monthly secondary forcing data "File B" for Phase 2 of the North American Land Data Assimilation System (NLDAS-2). The data are in 1/8th degree grid spacing and range from Jan 1979 to the present. The temporal resolution is monthly. The file format is WMO GRIB-1. The NLDAS-2 monthly secondary forcing data were generated from the NLDAS-2 hourly secondary forcing data, as monthly accumulation for precipitation and convective precipitation and monthly average for other variables. Monthly period of each month is from 00Z at start of the month to 23:59Z at end of the month. The one exception to this is the first month (Jan. 1979) that starts from 00Z 02 Jan 1979, except for the monthly accumulated precipitation and convective precipitation that both start from 12Z 01 Jan 1979. Brief description about the NLDAS-2 hourly secondary forcing data can be found from the GCMD DIF for GES_DISC_NLDAS_FORB0125_H_V002 at http://gcmd.gsfc.nasa.gov/getdif.htm?GES_DISC_NLDAS_FORB0125_H_V002. Details about the generation of the NLDAS-2 forcing datasets can be found in Xia et al. (2012). The NLDAS-2 monthly land surface forcing fields are grouped into two GRIB files, "File A" and "File B". "File B" is the secondary (optional) forcing file and contains ten fields. The data set applies a user-defined parameter table to indicate the contents and parameter number. The GRIBTAB file (http://disc.sci.gsfc.nasa.gov/hydrology/grib_tabs/gribtab_NLDAS_FORB_monthly.002.txt) shows a list of parameters for this data set, along with their Product Definition Section (PDS) IDs and units. For more information, please see the README Document at ftp://hydro1.sci.gsfc.nasa.gov/data/s4pa/NLDAS/README.NLDAS2.pdf.
- API nasa-test-0.demo.socrata.com | Last Updated 2015-07-20T04:51:42.000Z
The Total Solar Irradiance (TSI) data set SOR3TSID contains the total solar irradiance (a.k.a solar constant) data collected by the Total Irradiance Monitor (TIM) instrument covering the full wavelength spectrum averaged at daily intervals. The data are normalized to one astronomical unit (1 AU). The TIM instrument measures the Total Solar Irradiance (TSI), monitoring changes in incident sunlight to the Earth's atmosphere using an ambient temperature active cavity radiometer to a designed absolute accuracy of 100 parts per million (ppm, 1 ppm=0.0001% at 1-sigma) and a precision and long-term relative accuracy of 10 ppm per year. Due to the small size these data and to maximize ease of use to end-users, each delivered TSI product contains science results for the entire mission. Updates to Level 3 TSI data occur monthly in order to reduce repeated delivery of data.
- API nasa-test-0.demo.socrata.com | Last Updated 2015-07-19T08:03:24.000Z
The University of North Dakota (UND) Cessna Citation aircraft, an in-situ platform for the GCPEX campaign, carried a suite of instruments for measurements of cloud microphysics, state of the atmosphere parameters, aerosols, three-dimensional winds and turbulence. The data are stored as a separate file for each flight, with a primary (*.gcpex) file containing both direct and derived parameters. Raw data files for each cloud instrument are also archived for investigators who wish to use their own processing software. Citation flight navigation data is also included in this dataset.
- API nasa-test-0.demo.socrata.com | Last Updated 2015-07-19T08:33:15.000Z
Daily min, max, average temperature (F), precipitation (water equivalent in inches), and daily insolation (Langleys) for the Superior National Forest area as collected by NWS and U. of Minnesota
- API nasa-test-0.demo.socrata.com | Last Updated 2015-07-20T05:16:32.000Z
Deployable Space Systems (DSS), in partnership with ATK Space and EMCORE, will focus the proposed SBIR program on the optimization and design development of the most promising advanced space photovoltaic subsystem now available: EMCORE's ultra-thin 33% BOL-efficient Inverted Metamorphic Multijunction (IMM) solar cell that is interconnected and integrated onto an advanced flexible blanket; specifically for implementation on the lightest solar array structural system currently in use, ATK's UltraFlex. The proposed innovative and synergistic solutions will produce a near-term, low-risk solar array system that provides breakthrough performance in terms of highest specific power (>500 W/kg BOL), light weight, scalability to large (>15 kW) wing sizes, high deployed stiffness, high deployed strength, compact stowage volume (>50 kW/m3 BOL), high voltage operation capability, reliability, affordability, and rapid commercial readiness. The proposed effort will focus on increasing the design fidelity (TRL) of promising IMM-integrated onto UltraFlex blanket solutions configured to meet key high-voltage SEP / deep space science mission requirements. The development of feasible ultra-lightweight integrated IMM PV UltraFlex solar array technology will enable future missions, including near-to-medium term NASA Discovery and New Frontiers-class interplanetary, planetary orbital, comet rendezvous and Solar Electric Propulsion (SEP) science missions as well as future Orion/CEV Lunar sortie missions.
- API nasa-test-0.demo.socrata.com | Last Updated 2015-07-20T05:21:32.000Z
With the increasing demands placed on extravehicular activity (EVA) for the International Space Station assembly and maintenance, along with planned lunar and Martian missions, the need for increased human productivity and capability becomes ever more critical. This is most readily achieved by reduction in space suit weight and volume, and increased hardware reliability, durability, and operating lifetime. Considerable progress has been made with each successive generation of space suit design; from the Apollo A7L suit, to the current Shuttle Extravehicular Mobile Unit (EMU) suit, and the developmental I-Suit and Mark III suits. However, one area of space suit design which has continued to lag is the fluid pump used to drive the water cooling loop of the Primary Life Support System (PLSS). Conventional electric motor-driven fluid pumps are heavy, bulky, inefficient, and prone to wear. A new pump type is needed. Lynntech proposes to further reduce the size, weight and power consumption of its long-life, low-power, compact, lightweight, efficient electrochemically-driven pumps, which will allow their use in the next generation space suit.
- API nasa-test-0.demo.socrata.com | Last Updated 2015-07-19T09:18:57.000Z
This file contains Ellipsoid-projected TOA Radiance,resampled at the surface and topographically corrected, as well as geometrically corrected by PGE22. It is used for MISR Near Real Time processing, and is derived from session-based Level 0 input files. (Suggested Usage: MISR Near Real Time Level 2 TOA/Cloud retrievals require the radiances from all 9 cameras of MISR to be projected to a surface defined by the reference WGS84 ellipsoid.It is on this surface camera-to-camera stereo matching will be performed to determine cloud altitude. Topographic distortions are removed.Corrections due to errors in the supplied Navigation and attitude data are obtained during Terrain-projected parameter processing and are applied to these parameters.)
- API nasa-test-0.demo.socrata.com | Last Updated 2015-07-19T09:15:39.000Z
This work is part of the Soil Moisture Experiment (SMEX) project. This data set provides data from various sensors on the Soil Climate Analysis Network (SCAN) station number 2031, located near Ames, Iowa, USA. The data include: hourly and daily recordings of precipitation, air temperature, solar radiation, wind speed, relative humidity, soil moisture, and soil temperature. The station houses numerous sensors that automatically record data. Sensors include: global precipitation sensor, thermistor, thin film capacitance-type sensor, anemometer, pyranometer, pressure sensor, and a frequency-shift dielectric measuring device. Units of measurement vary, depending on the type of sensor. Data are uploaded by meteor burst telemetry to the Natural Resources Conservation Service (NRCS) Data Processing Center in Portland, Oregon. The NRCS has been operating this SCAN station since 23 September 2001, but this data set covers only the time period of interest to the Soil Moisture Experiments 2002 (SMEX02) campaign, 1 June 2002 through 31 August 2002. Data are available via FTP in two text files, one for hourly data, the other for daily data. These data were collected as part of a validation study for the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E). AMSR-E is a mission instrument launched aboard NASA's Aqua Satellite on 04 May 2002. AMSR-E validation studies linked to SMEX are designed to evaluate the accuracy of AMSR-E soil moisture data. Specific validation objectives include assessing and refining soil moisture algorithm performance; verifying soil moisture estimation accuracy; investigating the effects of vegetation, surface temperature, topography, and soil texture on soil moisture accuracy; and determining the regions that are useful for AMSR-E soil moisture measurements.
- API nasa-test-0.demo.socrata.com | Last Updated 2015-07-20T05:44:06.000Z
Software is an integral part of many complex embedded systems, such as avionics, scientific exploration, and on-board systems. However, poor software reliability is a major impediment to the success of these mission-critical systems. Testing, formal verification, and code synthesis techniques have been proposed to achieve more reliable software, with automated code synthesis being the most promising method. But synthesizing a complex system from scratch is costly. A more practical approach is to synthesize systems from existing components, i.e., component-based system synthesis (CBSS). Existing research in CBSS focuses on synthesizing systems bottom-up, which has severe limitations. We propose to achieve CBSS by combining the top-down and bottom-up approaches. Specifically, we develop techniques to achieve automated system decomposition and semi-automated system architecture synthesis. The IDEAL decomposition technique decomposes a system into ``IDEAL'' units that are mathematically composable and can be developed and evolved independently. Consequently, the technique assures system reliability and enables on-the-fly feature/technology upgrades. The QoS-based architecture synthesis technique seeks to assure system QoS properties by synthesizing an architecture that optimizes QoS objectives. It also facilitates on-board system adaptation due to resource and power constraints. Combined with bottom-up techniques, such as Amphion and pattern-based code synthesis, a dramatic leap in automated CBSS capability can be achieved. The proposed research will lead to sophisticated automation for synthesizing highly reliable, multi-mission capable avionics and exploration systems.