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

Now showing items 941-960 of 3613

    • NASA-LLIS-1734 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2006
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A wooden utility pole in substandard condition failed during a wind storm destroying multiple communications antennae.
      Subject(s) : Program Management. , Program Management.Role of civil service technical staff versus contractor staff , Safety and Mission Assurance. , Safety and Mission Assurance.Early requirements and standards definition , Safety and Mission Assurance.Maintenance , Safety and Mission Assurance.Product Assurance , Systems Engineering and Analysis.Long term sustainability and maintenance planning ,

    • NASA-LLIS-0363 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Four days before scheduled launch, routine tests on both Viking Orbiter receivers showed degraded performance. These results were believed to have been influenced by the test environment. ...
      Subject(s) : Environment , Launch Operations , Test & Verification ,

    • NACA-MR-L6A08 REV A 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1946
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation was carried out in the Langley two-dimensional low-turbulence tunnels for the purpose of developing an optimum flap configuration for maximum lift on the airfoil section for the Republic XF-12 airplane ...

    • NASA-TN-D-7411 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1974
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The stability and control characteristics of a four-engine turbofan STOL transport model having an externally blown jet flap have been investigated by means of the flying-model technique in the Langley full-scale tunnel. ...
      Subject(s) : AERODYNAMIC , AIRCRAFT , AUGMENTATION , BLOWN , CHARACTERISTICS , CONTROL , ENGINES , EXTERNALLY , FLAPS , FLIGHT , LIFT , SHORT , STABILITY , STATIC , TAKEOFF , TESTS , TRANSPORT , TURBOFAN ,

    • NASA-LLIS-0232 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A deactivated exhaust gas cooler in a vacuum line collapsed under normal operating conditions of 26 inches of mercury. The cooler was destroyed. There was minor damage to ...
      Subject(s) : Ground Equipment , Hardware , industrial Operations ,

    • NASA-LLIS-1264 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      While testing at Mach 0.8 in the 16-ft Transonic Tunnel, a full-scale F-15 inlet model separated from the sting. The model traveled downstream and impacted the catch screen ...
      Subject(s) : Test Facility ,

    • NACA-RM-L52K20 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1952
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Successful accomplishment of aircraft flight at transonic and supersonic speeds has served to place increased emphasis on the dynamic behavior of aircraft. The type of behavior referred to here concerns ...

    • NASA NPR 1900.3 REV B 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2007
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Purpose
      This NPR establishes NASA requirements and procedures to implement the Agency Ethics Program, as set forth in NPD 1900.9, Ethics Program Management, and to ensure that NASA complies with Federal ...

    • NASA-TP-1569 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1979
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation to evaluate the wear, friction, and temperature characteristics of aircraft tire treads fabricated from different elastomers is presented. The braking and cornering tests performed on aircraft tires retreaded ...
      Subject(s) : AIRCRAFT TIRES , BRAKING , COEFFICIENT OF FRICTION , ELASTOMERS , KINETIC FRICTION , SURFACE TEMPERATURE , TREADS , WEAR TESTS ,

    • NASA-LLIS-0309 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A metal halide high intensity light bulb in the O&C high bay ceiling inadvertently exploded. Glass fragments were spewed to the O&C high bay floor, which was clear of ...
      Subject(s) : Energetic Materials - Explosive/Propellant/Pyrotechnic , Facilities ,

    • NASA-LLIS-1598 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2005
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      After two and one-half years of operational use, a bearing cage instability trend developed in a bearing in one of three Cassini reaction wheels. JPL responded to the indication of life-limiting ...
      Subject(s) : bearing failure , excessive torque , Flight Equipment , Flight Operations , Ground Operations , Hardware , lubricant loss , Materials & Processes , momentum wheels , Parts , Risk Management/Assessment , Safety & Mission Assurance , Spacecraft , Test & Verification , torque instability , tribology ,

    • NASA NPR 3730.1 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)

    • NASA-LLIS-1040 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      In order to mitigate pilot seal extrusion-related failures of the Primary Reaction Control System (PRCS) pilot-operated valve (POV), effort were made to develop a redesigned ...
      Subject(s) : Hardware , Parts Materials & Processes , Research & Development , Test & Verification ,

    • NASA NPD 1600.4 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: APPLICABILITY
      a. This NPD is applicable to NASA Headquarters and NASA Centers, including Component Facilities and Technical and Service Support Centers.
      b. This NPD applies to the Jet Propulsion ...

    • NACA-ARR-3F23 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1943
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Considerable data are available for the evaluation of the effect of aerodynamic interference between wing, fuselage, and vertical tail on lateral-stability characteristics (references 1, ...
      Subject(s) : AIRFOILS , CHARACTERISTICS , CHORD , CIRCULAR , DIHEDRAL , EFFECT , END , FLAPS , FUSELAGES , HORIZONTAL , LATERAL , MOMENTS , NACA , PARTIAL , PLATES , ROLLING , SPAN , SPLIT , STABILITY , SURFACES , SWEEPBACK , TAIL , TAPERED , TESTS , TUNNEL , VERTICAL , WIND , WING , WINGS , YAWING ,

    • NASA-LLIS-0607 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1998
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      White spots, identified as "mealing," were observed on 10 spare Mars Observer circuit boards, withdrawn from long term storage for use on Mars Global Surveyor. Although the cause of the defects ...
      Subject(s) : Contamination , Corrosion , Hardware , Inherited Hardware , Logistics , Packaging Handling Storage , Parts Materials & Processes ,

    • NASA-LLIS-1573 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2006
      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-1473 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Electronic and hard copy documents submitted to the Accident Investigation Board should be numbered with unique page numbers to facilitate document integrity and traceability of hard copies ...
      Subject(s) : Accident Investigation , Administration/Organization , Computers , Configuration Management , Information Technology/Systems , NASA Standards , Policy & Planning , Safety & Mission Assurance ,

    • NASA-LLIS-2298 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The use of heritage hardware that has been flown previously in similar or more demanding orbits does not mean that this hardware is necessarily suitable to the mission for which it is being considered. The design of the ...
      Subject(s) : Engineering Design (Phase C/D).Spacecraft and Spacecraft Instruments , Integration and Testing , Manufacturing and Assembly , Missions and Systems Requirements Definition.Configuration control and data management , Missions and Systems Requirements Definition.Level 0/1 Requirements , Missions and Systems Requirements Definition.Requirements critical to costing and cost credibility , Program Management.Acquisition / procurement strategy and planning , Program Management.Configuration and data management , Program Management.Contractor relationships , Program Management.International partner coordination , Program Management.Risk management , Systems Engineering and Analysis.Engineering design and project processes and standards , Systems Engineering and Analysis.Level II/III requirements definition , Systems Engineering and Analysis.Mission and systems trade studies , Systems Engineering and Analysis.Planning of requirements verification processes ,

    • NACA-RM-A55K09 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1956
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The problems of the supersonic flight of large angles of attack have recently received curves within *5 percent ratios greater than 1. airplanes and missiles at increased attention as a result of the high altitudes currently ...