NASA

 
 
 
 
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    Hurricane Breaking News

  • Peipah (was 05W - Northwestern Pacific Ocean)

    15 Apr 2014 | 9:00 am
    Several regions in the south and central Philippines have flood advisories as the remnants of now dissipated Tropical Depression Peipah continue to linger over the country
  • Ita (Southern Pacific Ocean)

    15 Apr 2014 | 9:00 am
    After coming ashore on April 11, Tropical Cyclone Ita dropped heavy rainfall over the weekend that caused flooding in many areas of northeastern Australia's state of Queensland
  • Ivanoe (Southern Indian Ocean)

    7 Apr 2014 | 9:00 am
    Tropical Storm Ivanoe formed in the Southern Indian Ocean on April 5 and didn't last more than a day, but NASA's Tropical Rainfall Measuring Mission captured rainfall data on the short-lived storm.
  • Tropical Storm 22S

    4 Apr 2014 | 9:00 am
    Tropical Storm 22S came together on April 4 during the afternoon hours (Eastern Daylight Time/U.S.) in the Southern Indian Ocean as NASA's Aqua satellite passed overhead.
  • Hellen (Southern Indian Ocean)

    2 Apr 2014 | 9:00 am
    Powerful Tropical Cyclone Hellen rapidly weakened after hitting northwestern Madagascar but Hellen's remnants have recently started to show signs of life.
 
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    New NASA STI

  • Thrust Vector Control for Nuclear Thermal Rockets

    15 Apr 2014 | 10:06 am
    Abstract: Future space missions may use Nuclear Thermal Rocket (NTR) stages for human and cargo missions to Mars and other destinations. The vehicles are likely to require engine thrust vector control (TVC) to maintain desired flight trajectories. This paper explores requirements and concepts for TVC systems for representative NTR missions. Requirements for TVC systems were derived using 6 degree-of-freedom models of NTR vehicles. Various flight scenarios were evaluated to determine vehicle attitude co...
  • Jet-Surface Interaction Test: Phased Array Noise Source Localization Results

    15 Apr 2014 | 9:36 am
    Abstract: An experiment was conducted to investigate the effect that a planar surface located near a jet flow has on the noise radiated to the far-field. Two different configurations were tested: 1) a shielding configuration in which the surface was located between the jet and the far-field microphones, and 2) a reflecting configuration in which the surface was mounted on the opposite side of the jet, and thus the jet noise was free to reflect off the surface toward the microphones. Both conventional f...
  • High-Order Methods for Computational Fluid Dynamics: A Brief Review of Compact Differential Formulations on Unstructured Grids

    15 Apr 2014 | 8:06 am
    Abstract: Popular high-order schemes with compact stencils for Computational Fluid Dynamics (CFD) include Discontinuous Galerkin (DG), Spectral Difference (SD), and Spectral Volume (SV) methods. The recently proposed Flux Reconstruction (FR) approach or Correction Procedure using Reconstruction (CPR) is based on a differential formulation and provides a unifying framework for these high-order schemes. Here we present a brief review of recent developments for the FR/CPR schemes as well as some pacing it...
  • High-Order Space-Time Methods for Conservation Laws

    15 Apr 2014 | 7:46 am
    Abstract: Current high-order methods such as discontinuous Galerkin and/or flux reconstruction can provide effective discretization for the spatial derivatives. Together with a time discretization, such methods result in either too small a time step size in the case of an explicit scheme or a very large system in the case of an implicit one. To tackle these problems, two new high-order space-time schemes for conservation laws are introduced: the first is explicit and the second, implicit. The explicit ...
  • Recent Development in the CESE Method for the Solution of the Navier-Stokes Equations Using Unstructured Triangular or Tetrahedral Meshes With High Aspect Ratio

    15 Apr 2014 | 5:56 am
    Abstract: In the multidimensional CESE development, triangles and tetrahedra turn out to be the most natural building blocks for 2D and 3D spatial meshes. As such the CESE method is compatible with the simplest unstructured meshes and thus can be easily applied to solve problems with complex geometries. However, because the method uses space-time staggered stencils, solution decoupling may become a real nuisance in applications involving unstructured meshes. In this paper we will describe a simple and ...
 
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    New NASA STI Report Series

  • Alternate-Fueled Combustor-Sector Performance

    14 Apr 2014 | 10:11 am
    Abstract: In order to realize alternative fueling for military and commercial use, the industry has set forth guidelines that must be met by each fuel. These aviation fueling requirements are outlined in MIL-DTL-83133F(2008) or ASTM D 7566 Annex (2011) standards, and are classified as "drop-in" fuel replacements. This report provides combustor performance data for synthetic-paraffinic-kerosene- (SPK-) type (Fischer-Tropsch (FT)) fuel and blends with JP-8+100, relative to JP-8+100 as baseline fueling. D...
  • Alternate-Fueled Combustor-Sector Emissions

    14 Apr 2014 | 10:01 am
    Abstract: In order to meet rapidly growing demand for fuel, as well as address environmental concerns, the aviation industry has been testing alternate fuels for performance and technical usability in commercial and military aircraft. In order to make alternate fuels (and blends) a viable option for aviation, the fuel must be able to perform at a similar or higher level than traditional petroleum fuel. They also attempt to curb harmful emissions, and therefore a truly effective alternate fuel would emi...
  • Vandenberg Air Force Base Pressure Gradient Wind Study

    10 Apr 2014 | 5:22 am
    Abstract: Warning category winds can adversely impact day-to-day space lift operations at Vandenberg Air Force Base (VAFB) in California. NASA's Launch Services Program and other programs at VAFB use wind forecasts issued by the 30 Operational Support Squadron Weather Flight (30 OSSWF) to determine if they need to limit activities or protect property such as a launch vehicle. The 30 OSSWF tasked the AMU to develop an automated Excel graphical user interface that includes pressure gradient thresholds be...
  • Limitations of Phased Array Beamforming in Open Rotor Noise Source Imaging

    10 Apr 2014 | 5:12 am
    Abstract: Phased array beamforming results of the F31/A31 historical baseline counter-rotating open rotor blade set were investigated for measurement data taken on the NASA Counter-Rotating Open Rotor Propulsion Rig in the 9- by 15-Foot Low-Speed Wind Tunnel of NASA Glenn Research Center as well as data produced using the LINPROP open rotor tone noise code. The planar microphone array was positioned broadside and parallel to the axis of the open rotor, roughly 2.3 rotor diameters away. The results prov...
  • Unit-Sphere Multiaxial Stochastic-Strength Model Applied to Anisotropic and Composite Materials

    10 Apr 2014 | 1:32 am
    Abstract: Models that predict the failure probability of brittle materials under multiaxial loading have been developed by authors such as Batdorf, Evans, and Matsuo. These "unit-sphere" models assume that the strength-controlling flaws are randomly oriented, noninteracting planar microcracks of specified geometry but of variable size. This methodology has been extended to predict the multiaxial strength response of transversely isotropic brittle materials, including polymer matrix composites (PMCs), b...
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    NASACast: This Week @ NASA Video

  • This Week @ NASA, April 11, 2014

    National Aeronautics and Space Administration (NASA)
    11 Apr 2014 | 9:00 am
    A “go” to build OSIRIS-REx,Budget and security hearing,From here to Mars, and more...
  • This Week @ NASA, April 4, 2014

    National Aeronautics and Space Administration (NASA)
    4 Apr 2014 | 9:00 am
    Underground water on Saturn moon, LADEE update, Women in Aerospace and more...
  • This Week @ NASA, March 28, 2014

    National Aeronautics and Space Administration (NASA)
    28 Mar 2014 | 9:00 am
    Bolden testifies about budget, Asteroid Initiative Opportunities Forum, Nyberg and Parmitano in DC and more..
  • This Week @ NASA, March 21, 2014

    National Aeronautics and Space Administration (NASA)
    21 Mar 2014 | 9:00 am
    Bolden visits Ames, Rocket for Orion's flight test highlighted, New Chief Technologist, Coastal Flooding Challenge and more...
  • This Week @ NASA, March 14, 2024

    National Aeronautics and Space Administration (NASA)
    14 Mar 2014 | 9:00 am
    “Here’s some of the stories trending This Week at NASA!”
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    NASA Edge

  • NASA EDGE: MMS One Step Closer to Launch

    National Aeronautics and Space Administration (NASA)
    26 Mar 2014 | 9:00 am
    NASA EDGE talks with the MMS Team about the final tests for the satellites before they head to NASA Kennedy.
  • NASA EDGE: TDRS-L Launch

    National Aeronautics and Space Administration (NASA)
    6 Mar 2014 | 8:00 am
    NASA EDGE talks Space Communication and Navigation while covering the TDRS-L Launch atop the Vehicle Assembly Building at NASA Kennedy Space Center.
  • NASA EDGE: Launching CUNYSAT-1

    National Aeronautics and Space Administration (NASA)
    18 Feb 2014 | 8:00 am
    NASA EDGE covers the ELaNa II launch and speaks to Medgar Evers students about launching CUNYSAT-1; their first CubeSat.
  • NASA EDGE: Technology Demonstration Missions Part 3

    National Aeronautics and Space Administration (NASA)
    5 Feb 2014 | 8:00 am
    NASA EDGE visits NASA Ames during their telerobics demontration with K-10 and the ISS.
  • NASA EDGE: Technology Demonstration Missions Part 2

    National Aeronautics and Space Administration (NASA)
    27 Jan 2014 | 8:00 am
    NASA EDGE explores three more NASA Technology Demonstration Missions; Deep Space Atomic Clock, Solar Sails and the Low-Density Supersonic Decelerator.
 
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    NASACast Video

  • This Week @ NASA, April 11, 2014

    National Aeronautics and Space Administration (NASA)
    11 Apr 2014 | 9:00 am
    A “go” to build OSIRIS-REx,Budget and security hearing,From here to Mars, and more...
  • LDSD: We Brake for Mars

    National Aeronautics and Space Administration (NASA)
    10 Apr 2014 | 9:00 am
    NASA tests a supersonic parachute under Mars-like conditions for future exploration.
  • Space to Ground - 4/4/2014

    National Aeronautics and Space Administration (NASA)
    4 Apr 2014 | 9:00 am
    New crew orientation, Russian cargo ships, saliva study and solar arrays. Question or comment? Use #spacetoground to talk to us.
  • This Week @ NASA, April 4, 2014

    National Aeronautics and Space Administration (NASA)
    4 Apr 2014 | 9:00 am
    Underground water on Saturn moon, LADEE update, Women in Aerospace and more...
  • What's Up for April 2014

    National Aeronautics and Space Administration (NASA)
    31 Mar 2014 | 9:00 am
    Mars at opposition, a lunar eclipse and April's Lyrid meteor shower.
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    NASACast: Space Shuttle and Space Station Video

  • Space to Ground - 4/4/2014

    National Aeronautics and Space Administration (NASA)
    4 Apr 2014 | 9:00 am
    Josh Byerly:  Welcome to Space to Ground. Your weekly look at what’s happening on board ISS. I’m Josh Byerly. The three newest station residents are getting used to their new home in space, since their arrival last week. Steve Swanson, Oleg Artemyev and Alexander Skvortsov are going through standard onboard orientation, spending a few days learning their surroundings and practicing with the emergency equipment. The crews keep their skills sharp for three main emergencies on board: fire, depressurization and toxic chemicals.
  • Space to Ground - 3/21/2014

    National Aeronautics and Space Administration (NASA)
    21 Mar 2014 | 9:00 am
    VO: Houston, station on space to ground. Josh Byerly: Welcome to Space to Ground. Your weekly look at what’s happening on board the ISS. I’m Josh Byerly. Steve Swanson, Oleg Artemyev and Alexander Skvortsov are in Kazakhstan getting ready to launch to the station next week.
  • Space to Ground - 3/07/14

    National Aeronautics and Space Administration (NASA)
    7 Mar 2014 | 8:00 am
    Josh Byerly: Welcome to Space To Ground, your weekly look at what’s happening on board the ISS. I’m Josh Byerly. This past weekend, the station crew sent down some congratulations to the cast and crew of the movie Gravity. Astronaut Rick Mastracchio: We want to congratulate the entire production and directing team and the stars of Gravity for the honors they have earned from the Academy of Motion Picture Arts and Sciences.
  • Space to Ground - 02/28/14

    National Aeronautics and Space Administration (NASA)
    28 Feb 2014 | 8:00 am
    V.O.: Houston, station on space to ground. Josh Byerly: Welcome to Space To Ground, your weekly look at what’s happening on board the ISS. I’m Josh Byerly. More CubeSats were deployed off the side of the station this week. Sixteen were released earlier this month, and twelve more were deployed in this second batch. These small Earth-imaging satellites will provide clearer pictures of our home planet for researchers and educators. One of the great mysteries that the station is helping solve has to do with plants.
  • Space to Ground - 02/21/14

    National Aeronautics and Space Administration (NASA)
    21 Feb 2014 | 8:00 am
    VO: Houston, station on space to ground. Josh  Byerly: Welcome to space to ground, your weekly look at what’s happening on board the ISS.I’m Josh Byerly. Orbital Sciences’ Cygnus completed its mission this week. The cargo craft was detached from the station on Tuesday and sent into a destructive re-entry into the atmosphere on Wednesday. This brings to a close the first official cargo flight to the station by Orbital Sciences.So the United States now has two commercial companies – Orbital and SpaceX – flying up to the ISS, along with international partner vehicles.
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    NASACast: What's Up? Video Podcasts

  • What's Up for April 2014

    National Aeronautics and Space Administration (NASA)
    31 Mar 2014 | 9:00 am
    Mars at opposition, a lunar eclipse and April's Lyrid meteor shower.
  • What's Up for March 2014

    National Aeronautics and Space Administration (NASA)
    4 Mar 2014 | 8:00 am
    Watch starlight get blocked by a passing asteroid, planets march across the sky and a lunar eclipse preview.
  • What's Up for February 2014

    National Aeronautics and Space Administration (NASA)
    3 Feb 2014 | 8:00 am
    See all the planets, plus mission updates from comet and asteroid missions Dawn and Rosetta.
  • What's Up for January 2014

    National Aeronautics and Space Administration (NASA)
    30 Dec 2013 | 8:00 am
    Jupiter at opposition. Venus at conjunction. A Juno mission update. And the Quadrantid meteor shower.
  • What's Up for December 2013

    National Aeronautics and Space Administration (NASA)
    25 Nov 2013 | 8:00 am
    Track comet ISON's journey as bright planets and starry events fill the sky this December.
 
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    NASACast Audio

  • This Week @ NASA, April 11, 2014

    National Aeronautics and Space Administration (NASA)
    11 Apr 2014 | 9:00 am
    A “go” to build OSIRIS-REx,Budget and security hearing,From here to Mars, and more...
  • This Week @ NASA, April 4, 2014

    National Aeronautics and Space Administration (NASA)
    4 Apr 2014 | 9:00 am
    Underground water on Saturn moon, LADEE update, Women in Aerospace and more...
  • This Week @ NASA, March 28, 2014

    National Aeronautics and Space Administration (NASA)
    28 Mar 2014 | 9:00 am
    Bolden testifies about budget, Asteroid Initiative Opportunities Forum, Nyberg and Parmitano in DC and more..
  • This Week @ NASA, March 21, 2014

    National Aeronautics and Space Administration (NASA)
    21 Mar 2014 | 9:00 am
    Bolden visits Ames, Rocket for Orion's flight test highlighted, New Chief Technologist, Coastal Flooding Challenge and more...
  • This Week @ NASA, March 14, 2024

    National Aeronautics and Space Administration (NASA)
    14 Mar 2014 | 9:00 am
    “Here’s some of the stories trending This Week at NASA!”
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    NASACast: This Week @NASA Audio

  • This Week @ NASA, April 11, 2014

    National Aeronautics and Space Administration (NASA)
    11 Apr 2014 | 9:00 am
    “Here’s some of the stories trending This Week at NASA!” A “go” to build OSIRIS-REx
  • This Week @ NASA, April 4, 2014

    National Aeronautics and Space Administration (NASA)
    4 Apr 2014 | 9:00 am
    “Here’s some of the stories trending This Week at NASA!” Underground water on Saturn moon
  • This Week @ NASA, March 28, 2014

    National Aeronautics and Space Administration (NASA)
    28 Mar 2014 | 9:00 am
    “Here’s some of the stories trending This Week at NASA!” Bolden testifies about budget
  • This Week @ NASA, March 21, 2014

    National Aeronautics and Space Administration (NASA)
    21 Mar 2014 | 9:00 am
    “Here’s some of the stories trending This Week at NASA!” Bolden visits Ames
  • This Week @ NASA, March 14, 2024

    National Aeronautics and Space Administration (NASA)
    14 Mar 2014 | 9:00 am
    “Here’s some of the stories trending This Week at NASA!” SLS flight avionics and software
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    NASA Image of the Day

  • Total Lunar Eclipse

    15 Apr 2014 | 9:00 am
    The United States was in a prime orbital position and time of day to view the eclipse on April 15, 2014. Depending on local weather conditions, the public got a spectacular view looking into the sky as the moon's appearance changed from bright orange to blood red to dark brown and perhaps gray. The eclipse is a phenomenon that occurs when the Earth, moon and sun are in perfect alignment, blanketing the moon in the Earth's shadow. The United States, in its entirety, will not be able to witness a full lunar eclipse again until 2019. This image was taken in San Jose, Calif. Image Credit: NASA…
  • Climbing Legs for Robonaut 2 Headed to International Space Station

    14 Apr 2014 | 9:00 am
    NASA has built and is sending a set of high-tech legs up to the International Space Station for Robonaut 2 (R2), the station's robotic crewmember. The new legs are scheduled to launch on the SpaceX-3 commercial cargo flight to the International Space Station, scheduled to launch Monday, April 14 at 4:58 p.m. EDT from Cape Canaveral Air Force Station in Florida. These new legs, funded by NASA's Human Exploration and Operations and Space Technology mission directorates, will provide R2 the mobility it needs to help with regular and repetitive tasks inside and outside the space station. The goal…
  • 'Veggie' Experiment Launching to Station Aboard SpaceX Cargo Craft

    13 Apr 2014 | 9:00 am
    The International Space Station's Vegetable Production System ("Veggie") experiment is on display in the News Center at NASA's Kennedy Space Center in Florida. Veggie is a new investigation with "edible results" heading to the space station. Veggie is a deployable plant growth unit capable of producing salad-type crops to provide the crew with appetizing, nutritious and safe fresh food and support crew relaxation and recreation. It will serve as a new space station facility as well and will provide a venue for future plant growth research. To the right of the Veggie experiment is a model of…
  • Visiting the Renovated Flight Control Room for NASA's Orion Spacecraft

    11 Apr 2014 | 9:00 am
    Mission Operations Director Paul Hill talks to the media as NASA Administrator Charles Bolden and Johnson Space Center Director Ellen Ochoa visit Mission Control in the newly renovated and historic White Flight Control Room, which will be used to support NASA’s Orion spacecraft. The mission patches that adorn the walls reflect the control room's previous use in the Space Shuttle Program. Orion is the exploration spacecraft designed to carry astronauts to destinations in deep space, including an asteroid and Mars. It will have emergency abort capability, sustain the crew during space travel…
  • NASA Engineers Prepare Game Changing Cryotank for Testing

    10 Apr 2014 | 9:00 am
    NASA and Boeing engineers are inspecting and preparing one of the largest composite rocket propellant tanks ever manufactured for testing. The composite cryotank is part of NASA’s Game Changing Development Program and Space Technology Mission Directorate, which is innovating, developing, testing and flying hardware for use in NASA's future missions. NASA focused on this technology because composite tanks promise a 30 percent weight reduction and a 25 percent cost savings over the best metal tanks used today. The outer shell of the 18-foot-diameter (5.5-meter) cryotank is the same size as…
 
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    NASA Image of the Day

  • Total Lunar Eclipse

    15 Apr 2014 | 9:00 am
    The United States was in a prime orbital position and time of day to view the eclipse on April 15, 2014. Depending on local weather conditions, the public got a spectacular view looking into the sky as the moon's appearance changed from bright orange to blood red to dark brown and perhaps gray. The eclipse is a phenomenon that occurs when the Earth, moon and sun are in perfect alignment, blanketing the moon in the Earth's shadow. The United States, in its entirety, will not be able to witness a full lunar eclipse again until 2019. This image was taken in San Jose, Calif. Image Credit: NASA…
  • Climbing Legs for Robonaut 2 Headed to International Space Station

    14 Apr 2014 | 9:00 am
    NASA has built and is sending a set of high-tech legs up to the International Space Station for Robonaut 2 (R2), the station's robotic crewmember. The new legs are scheduled to launch on the SpaceX-3 commercial cargo flight to the International Space Station, scheduled to launch Monday, April 14 at 4:58 p.m. EDT from Cape Canaveral Air Force Station in Florida. These new legs, funded by NASA's Human Exploration and Operations and Space Technology mission directorates, will provide R2 the mobility it needs to help with regular and repetitive tasks inside and outside the space station. The goal…
  • 'Veggie' Experiment Launching to Station Aboard SpaceX Cargo Craft

    13 Apr 2014 | 9:00 am
    The International Space Station's Vegetable Production System ("Veggie") experiment is on display in the News Center at NASA's Kennedy Space Center in Florida. Veggie is a new investigation with "edible results" heading to the space station. Veggie is a deployable plant growth unit capable of producing salad-type crops to provide the crew with appetizing, nutritious and safe fresh food and support crew relaxation and recreation. It will serve as a new space station facility as well and will provide a venue for future plant growth research. To the right of the Veggie experiment is a model of…
  • Visiting the Renovated Flight Control Room for NASA's Orion Spacecraft

    11 Apr 2014 | 9:00 am
    Mission Operations Director Paul Hill talks to the media as NASA Administrator Charles Bolden and Johnson Space Center Director Ellen Ochoa visit Mission Control in the newly renovated and historic White Flight Control Room, which will be used to support NASA’s Orion spacecraft. The mission patches that adorn the walls reflect the control room's previous use in the Space Shuttle Program. Orion is the exploration spacecraft designed to carry astronauts to destinations in deep space, including an asteroid and Mars. It will have emergency abort capability, sustain the crew during space travel…
  • NASA Engineers Prepare Game Changing Cryotank for Testing

    10 Apr 2014 | 9:00 am
    NASA and Boeing engineers are inspecting and preparing one of the largest composite rocket propellant tanks ever manufactured for testing. The composite cryotank is part of NASA’s Game Changing Development Program and Space Technology Mission Directorate, which is innovating, developing, testing and flying hardware for use in NASA's future missions. NASA focused on this technology because composite tanks promise a 30 percent weight reduction and a 25 percent cost savings over the best metal tanks used today. The outer shell of the 18-foot-diameter (5.5-meter) cryotank is the same size as…
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