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

Now showing items 2901-2920 of 3613

    • NACA-RM-L52G11 REV A 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1952
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      A systematic research program is being carried out in the Langley high-speed 7- by 10-foot wind tunnel to determine the aerodynamic characteristics of various arrangements of the component parts of ...

    • NASA-TP-1020 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1977
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: It was found that for identical increases in bending moment, a winglet provides a greater gain in induced efficiency than a tip extension. Winglet toe-in angle allows design trades between efficiency and root moment. A ...
      Subject(s) : AERODYNAMIC CHARACTERISTICS , BENDING MOMENTS , EXTENSIONS , WING LOADING , WING ROOTS , WING TIPS , WINGLETS ,

    • NASA-LLIS-0304 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Excessive Low Noise Amplifier (LNA) recovery time had not been detected because testing had been done in transmit-only or receive-only modes. Hardware should be functionally end-to-end tested. ...
      Subject(s) : RF Performance Verification , Test & Verification ,

    • NASA-LLIS-1799 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2007
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The loss of the IMAGE satellite was attributed to a Single Event Upset-induced "instant trip" of the Solid State Power Controller (SSPC) that supplies power to the single-string Transponder. ...
      Subject(s) : Additional Categories.Communication Systems , Additional Categories.Computers , Additional Categories.Flight Equipment , Additional Categories.Flight Operations , Additional Categories.Hardware , Additional Categories.Information Technology/Systems , Additional Categories.Mishap Reporting , Additional Categories.Parts , Materials , & Processes , Additional Categories.Safety & Mission Assurance , Additional Categories.Software , Additional Categories.Spacecraft , Engineering Design (Phase C/D). , Engineering Design (Phase C/D).Power , Mission Operations and Ground Support Systems.Mission control Planning , Program Management.Communications between different offices and contractor personnel , Program Management.Cross Agency coordination , Safety and Mission Assurance.Product Assurance ,

    • NASA-LLIS-1035 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A new low blow-by pyrovalve was used in place of a high blow-by pyrovalve primarily to avoid the possibility of a pyrotechnic-induced propellant explosion in a newly ...
      Subject(s) : Energetic Materials - Explosive/Propellant/Pyrotechnic , Flight Equipment , Hardware , Parts Materials & Processes , Risk Management/Assessment , Test & Verification ,

    • NASA-LLIS-0790 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Problem/Failure (P/F) Reports are reviewed independently and approved by reliability engineering specialists to ensure objectivity and integrity in the closure process. This practice assures ...

    • NASA NPR 9050.2 REV A 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: PURPOSE
      This NASA Procedural Requirements (NPR) provides the financial management requirements for advances and prepayments.
      APPLICABILITY
      This NPR is applicable to NASA ...

    • NASA-LLIS-6345 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The original strategy for the shuttle development was to install development flight instrumentation into the vehicle and devote considerable effort during the first flights measuring aerodynamic stability and control, ...

    • NACA-ACR-3I20 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1943
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The NACA has for some time been investigation airfoils equipped with high lift devices for the purpose of improving the performance characteristier these airfoils. The result of tests of ...
      Subject(s) : AERODYNAMIC , AIRFOIL , AIRFOILS , CHAR , COEFFICIENTS , DEVICES , DOUBLE , DRAG , FLAPPING , FLAPS , HIGH , LIFT , LOW , MOMENTS , NACA , ORDINATES , PITCHING , PRESSURE , PROFILES , SLOTTE , SLOTTED , TESTS , TUNNEL , TURBULENCE , WIND , WING , WINGS ,

    • NASA-LLIS-0664 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Contact with the SOlar Heliospheric Observatory (SOHO) spacecraft was lost in the early morning hours of June 25, 1998, Eastern Daylight Time (EDT), during a planned period ...
      Subject(s) : Administration/Organization , Communication Systems , Computer-Aided Design/Manufacturing/Engineering , External Relations , Flight Equipment , Flight Operations , Ground Equipment , Ground Operations , Hardware , Human Factors , Mishap Reporting , Parts Materials & Processes , Risk Management/Assessment , Safety & Mission Assurance , Spacecraft ,

    • NASA-LLIS-1488 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2004
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The Fluids and Combustion Facility (FCF) project at the NASA Glenn Research Center subjected the Digital Signal Processor (DSP) based Data Acquisition board to ionizing radiation testing to ...
      Subject(s) : Environment , Hardware , Parts Materials & Processes , Safety & Mission Assurance ,

    • NACA-RM-A51G31 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1951
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Wings having moderately high degrees of sweepback offer the possibility of flight at transonic speeds without serious compressibility effects. Studies of the pressure distributions on such wings have shown ...

    • NASA-HDBK-1001 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: FOREWORD
      This Handbook provides information relative to the natural environment for altitudes between 90 km and the surface of the Earth for the principal space vehicle development, operational, and ...

    • NASA-LLIS-3760 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      When processing a space vehicle for launch, the test team needs to know how the vehicle's interconnecting hardware is configured just before a test begins. A cable disconnected in one system ...
      Subject(s) : Configuration Management , Engineering design and project processes and standards , Ground processing and manifesting , Ground support systems , Launch support systems , Launch Systems , Level II/III requirements definition , Long term sustainability and maintenance planning ,

    • NASA-LLIS-1581 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2005
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      There is an extensive history of resistance thermal device (RTD) failures on NASA and DOD missions due to thermally-induced mechanical stress. Recent MER ground and in-flight failures, including ...
      Subject(s) : Flight Equipment , Hardware , Parts , Materials & Processes , Payloads , Spacecraft , Test & Verification , Test Article ,

    • NASA-LLIS-0420 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1996
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The pressure regulator in the Viking Orbiter Propulsion Subsystem started leaking following a pyro firing that occurred prior to the near-Mars TCM. Likely causes were corrosion or residue ...
      Subject(s) : Energetic Materials - Explosive/Propellant/Pyrotechnic , Material Compatibility , Pressure Vessels , Propellant Feed System ,

    • NASA-LLIS-0215 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      All inventory SRM case o-rings were reinspected during the STS 51-L investigation. When reinspected using original inspection equipment (mechanical micrometer), very few ...
      Subject(s) : Launch Vehicle , Parts Materials & Processes ,

    • NACA-TN-951 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1945
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The modern airplane body is essentially a thin-walled shell. In some body designs, all longitudinal skin stiffeners are removed or only three longitudinal skin stiffeners are used, thus the thin Shell ...

    • NACA-TR-923 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1949
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Tests were made to fill partly the need for information on the effect of afterbody dimensions on the hydrodynamic stability of a flying boat in smooth water. The dimensions investigated were depth of step, angle of afterbody ...

    • NASA-TN-D-6391 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1971
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Wind tunnel investigation of external-flow jet-flap transport configuration having full-span tripple-slotted flaps - graphs
      Subject(s) : AIRCRAFT , CHARTS , CONFIGURATIONS , CONTROL , DEVICES , FLAPS , GRAPHS , JET , LIFT , MODELS , SHORT , SLOTS , SURFACES , TAKEOFF , TRANSPORT , TUNNEL , WIND ,