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

Now showing items 3281-3300 of 3613

    • NASA-CR-134902 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1975
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Six fiber products and six insulation blankets comprising silica, alumina, zirconia, mullite, and mixed ceramic systems were subjected to furnace exposures up to 500 hours at temperatures of 1000 to 1600 C and evaluated ...
      Subject(s) : ALUMINUM OXIDES , CERAMICS , HIGH TEMPERATURE TESTS , LOW COST , SILICON DIOXIDE , THERMAL CONDUCTIVITY , THERMAL CYCLING TESTS , THERMAL INSULATION ,

    • NASA-LLIS-1619 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2005
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      An integration and test failure was traced to an unmated flight connector that was registered as "mated" in the mate/demate log. The root cause was attributed to the failure of a technician/engineer ...
      Subject(s) : blind mate , connector demating , connector mating , Flight Equipment , Ground Equipment , Hardware , Human Factors , Independent Verification and Validation , Industrial Operations , Payloads , QA procedure , Safety & Mission Assurance , Test & Verification , Test Article ,

    • NACA-TR-898 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1948
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: On the basis of modern plasticity considerations, a unified theory of plastic buckling applicable to both columns and plates has been developed. For uniform compression, the theory shows that long columns which bend without ...
      Subject(s) : ANALYSIS , BENDING , BUCKLING , COLUMNS , COMPRESSIVE , DEFORMATION , ELASTICITY , ELASTOPLASTICITY , MATHEMATICS , MODULUS , PLASTIC , PLATES , RELATIONSHIPS , STABILITY , STRAIN , STRENGTH , STRESS , STRUCTURAL , SUPPORTS ,

    • NASA-LLIS-0967 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Turbine speed must be high enough at the time of main combustion chamber priming to be able to pump hydrogen through the downstream system against the back pressure rise ...
      Subject(s) : Configuration Management , Cryogenic Systems , Ground Equipment , Hardware , Launch Vehicle , Parts Materials & Processes , Safety & Mission Assurance , Spacecraft , Test Article , Test Facility ,

    • NACA-TN-3919 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1957
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Results are presented of an investigation of the effectiveness of a wing equipped with a 50-percent-chord sliding flap and a 30-percent-chord slotted flap in deflecting a propeller slipstream downward for vertical take-off. ...
      Subject(s) : AIRPLANES , COMPLETE , DEVICES , HIGH , LIFT , LONGITUDINAL , PERFROMANCE , PROPELLERS , SLIPSTREAM , STABILITY , STATIC , WINGS ,

    • NASA-TN-D-30 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1960
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The lift and drag characteristics of a Boeing KC-135 airplane were determined during maneuvering flight over the Mach number range from 0.70 to 0.85 for the airplane in the clean configuration at an altitude of 26,000 feet. ...
      Subject(s) : AERODYNAMIC CHARACTERISTICS , AERODYNAMIC COEFFICIENTS , AERODYNAMIC CONFIGURATIONS , AERODYNAMIC DRAG , C-135 AIRCRAFT , FLIGHT TESTS , JET AIRCRAFT , LIFT , MACH NUMBER , MANEUVERS , SUBSONIC SPEED , SWEPT WINGS ,

    • NACA-TR-1091 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1952
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A low-speed wind-tunnel investigation was made to determine the lateral control characteristics of a series of untapered low-aspect-ratio wings. Sealed flap ailerons of various spans and spanwise locations were ...
      Subject(s) : AILERONS , AIRCRAFT , ASPECT , CONTROL , EQUIPMENT , FLAPS , LATERAL , LOW , MOMENTS , RATIO , RETRACTABLE , SPEED , STABILITY , TESTS , TUNNEL , WIND , WING , WINGS , YAWING ,

    • NASA-LLIS-0526 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      One of the most important elements for the further improvement of the performance of the magnetooptic imaging instrument is to quantify the contribution of each different ...
      Subject(s) : Research & Development , Test & Verification ,

    • NASA-LLIS-1379 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The company's failure to implement and enforce their company safety program, as defined in their Safety & Health plan submitted to NASA, resulted in a lax safety culture. This lax safety ...
      Subject(s) : Accident Investigation , Administration/Organization , Emergency Preparedness , Human Resources & Education , Industrial Operations , Mishap Reporting , Policy & Planning , Procurement Small Business & Industrial Relations , Program and Project Management , Risk Management/Assessment , Safety & Mission Assurance ,

    • NACA-TN-4323 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1958
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Froude number is found to be the parameter that determines the effect of body rotations on internal natural convection flows. Explicit forms of Froude number are determined for the cases of predominant rotation and predominant ...

    • NASA MEMO 6-5-59 REV A 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1959
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Results are presented of a wind-tunnel investigation to evaluate the static and dynamic stability derivatives of a model with a low-aspect-ratio unswept wing and a high horizontal tail. In addition to results for the ...

    • NASA-LLIS-1146 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      New safety initiative programs that focus on workforce risk reduction, collateral damage reduction, or increasing maintainability of human error in Shuttle Processing must ...
      Subject(s) : Human Factors , Policy & Planning , Risk Management/Assessment ,

    • NASA-LLIS-5117 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: For requirements that specify verification via analysis, a required confidence level should be defined as part of the requirement. Many of the Constellation Program Ground Systems requirements were to be verified via ...

    • NASA NPR 2800.2 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The scope of this document includes both procurement of goods and services, as well as any EIT development by NASA or its contractors for the use of NASA employees, employees of other Federal agencies, and the public. This ...

    • NASA-LLIS-0413 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1996
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Because the Viking Orbiter power switching relays were arranged in a matrix, two relays could under certain conditions be inadvertently actuated when only one was commanded. A system control ...
      Subject(s) : Flight Equipment , Ground Operations , Spacecraft ,

    • NASA-TN-D-3088 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1965
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Aerodynamic characteristics of spherically blunted cones at Mach numbers from 0.5 to 5.0
      Subject(s) : AERODYNAMIC , BLUNT , BODIES , BODY , CHARACTERISTICS , CONE , CONES , MACH , NUMBER , SPEED , SUBSONIC ,

    • NASA-LLIS-0781 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Perform all thermal environmental tests on electronic spaceflight hardware in a flight-like thermal vacuum environment (i.e., do not substitute an atmospheric pressure thermal test for the ...

    • NASA-LLIS-1589 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2004
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A program»s accomplishments depend on good, open, and integrated communication. The CAIB Report highlighted the issue of keeping a "code of silence" and its detriment to the success of ...

    • NACA-TR-711 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1941
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An analysis has been made of the longitudinal stability characteristics of 15 airplanes as determined in flight. In the correlation of satisfactory and unsatisfactory characteristics with determined values, the derivative ...

    • NACA-WR-L-355 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1941
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Tests have been made in the NACA 4- by 6-foot vertical wind tunnel of an NACA 0009 airfoil with a 30-percent-chord flap having a medium amount of aerodynamic overhanging balance. In the investigation the effects of the ...