NASA - National Aeronautics and Space Administration (NASA): Recent submissions

Now showing items 3361-3380 of 3613

    • NASA NPR 9615.1 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2008
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: PURPOSE
      This NASA Procedural Requirements (NPR) provides the financial management requirements for accounts payable.
      APPLICABILITY
      This NPR is applicable to NASA Headquarters ...

    • NASA-STD-8739.4 W/CHG 6 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2008
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Purpose
      This publication sets forth requirements for interconnecting cable and harness assemblies that connect electrical/electronic and electromechanical components.
      Special requirements may exist ...

    • NASA-LLIS-0442 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A roof fire occurred in Cell 23 of Building 35. An Accident Review Team concluded that the cause of the fire was the inoperability of the water quench system used to cool ...
      Subject(s) : Facilities , Fire Protection , Ground Operation , Test Facility ,

    • NASA-LLIS-0243 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Subject(s) : Fire Protection , Logistics ,

    • NACA-RM-L56G02 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1956
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      A wind-tunnel investigation is being made by the National Advisory Committee for Aeronautics to study the characteristics of various high-lift devices on a full-scale 45° sweptback wing. Reference 1 ...

    • NASA-LLIS-1259 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A glass container of chemical waste exploded when disposing of a new metal etching waste solution (mixed organic/acid chemical) using a 1-gallon glass container designated ...
      Subject(s) : Disposal , Hazardous/Toxic Waste/Materials , Independent Verification and Validation , Packaging Handling Storage ,

    • NACA-RM-L52G07 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1952
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Various investigations have shown that the dynamic lateral stability characteristics of high-speed aircraft are critically dependent on certain mass and aerodynamic parameters and, hence, that reliable ...

    • NASA-TN-D-8260 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1976
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Winglets, which are small, nearly vertical, winglike surfaces, substantially reduce drag coefficients at lifting conditions. The primary winglet surfaces are rearward above the wing tips; secondary surfaces are forward ...
      Subject(s) : AERODYNAMIC DRAG , CONTROL SURFACES , DRAG REDUCTION , LIFT DEVICES , SUBSONIC SPEED , WIND TUNNEL TESTS , WING FLAPS , WING TIPS ,

    • NASA-LLIS-0303 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Although, the synthetic lubricant on Galileo slip ring bearings had been replaced with KG80 oil, the porous, phenolic ball retainer had absorbed some of the previous lubricant. Under vacuum, ...
      Subject(s) : Hardware , Parts Materials & Processes , Spacecraft ,

    • NASA-LLIS-1797 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2007
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A September 23, 2005 video presentation in which the Chief Engineer for the JPL Mars Program discusses some of the hard systems engineering lessons learned from developing the Mars Exploration ...

    • NASA-HDBK-7004 REV C 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Purpose
      The purpose of force limited vibration testing is to alleviate overtesting associated with the unrealistically high base reaction forces that occur at the test item resonances in conventional ...

    • NASA-LLIS-1034 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Location: DFRC/B4800
      Incident Report: A facilities maintenance shop worker, working alone, was disassembling and removing an 8' high mezzanine structure decked with ...
      Subject(s) : Facilities ,

    • NASA-LLIS-0380 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      For Voyager and Viking, tape position error accumulation on the onboard spacecraft tape recorder required arduous workarounds to reset the position indicator. Specifically, up/down counters ...
      Subject(s) : Positioning Devices , Spacecraft ,

    • NASA-LLIS-4416 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: It is important to establish the environment in which equipment is to operate prior to designing or specifying it. Once the design or specification is set, NASA should not forego certification testing as this may give rise ...

    • NACA-RM-A51B21 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1951
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Theoretical and experimental studies show that an airplane with a low-aspect-ratio triangular wing would have desirable characteristics for flight at moderate supersonic speeds. At low speeds, however, the ...

    • NASA-LLIS-0663 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Gas Tungsten Arc Welding and Variable Polarity Plasma Arc Welding are preferred for joining 2219 Aluminum, and Electron Beam Welding is preferred for joining Inconel 718 in critical aerospace ...

    • NACA-ACR-L4D12 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1944
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Force tests in two-dimensional flow have been made in the NACA 4- by 6-foot vertical tunnel to determine the aerodynamic characteristics of an NACA 0009 airfoil with flaps having chords 20, 30, and 40 percent of the airfoil ...

    • NASA-LLIS-1568 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2005
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Key subordinate project management positions must be truly accountable to the Project Manager. Sub-project managers must be empowered to manage and make decisions pertaining to their element ...
      Subject(s) : Financial Management , Program and Project Management ,

    • NASA-LLIS-2047 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2009
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      It was late on September 9, 2008 that Hurricane Ike moved into the southeastern Gulf of Mexico and developed a large wind field as it moved northwestward over the next 3 days. Tropical-storm-force ...
      Subject(s) : Additional Categories.Emergency Preparedness ,

    • NASA-LLIS-1487 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2004
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      One of the most difficult obstacles to overcome in resolving the problem of the cracks found in the flowliners at the gimbal joint of the LH2 feedlines of the Orbiter fleet has been the ...
      Subject(s) : Program and Project Management ,