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

Now showing items 1181-1200 of 3613

    • NASA-LLIS-4578 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Technical data architecture and standards were not defined early in the Constellation Program. Tools, such as Cradle, Windchill (official data repository), IRMA (risk management), Primavera (schedules), etc., were selected ...

    • NACA-TN-2335 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1951
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: On the basis of approximate expressions for the lift-curve slope and the coefficient of damping in roll of swept wings at subsonic speeds, the finite-span effects on these aerodynamic characteristics are shown to be functions ...
      Subject(s) : ASPECT , CHARACTERISTICS , DAMPING , RATIO , ROLL , SWEPTBACK , SWEPTFORWARD , THEORIES , WINGS ,

    • NASA-LLIS-0358 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A jitter in the solar array drive control loop during Venus mapping operations was caused by a deficiency, at oblique sun angles, in the algorithm that is used in Flight Software (FSW) to ...
      Subject(s) : AACS , Hardware , Mathematical Models , Safety & Mission Assurance , Software ,

    • NASA-LLIS-0106 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Technicians were performing radiographic inspection of the insulation area in the atlas stage thrust section utilizing a 100KV machine. The tubehead was placed inside the ...
      Subject(s) : Ground Equipment , Ground Operations ,

    • NASA-LLIS-1103 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Enhanced Safety and Efficiency Due to Simulated Space Shuttle Launches and Flight Operations.
      Subject(s) : Aerospace Safety Advisory Panel , Human Factors , Training Equipment ,

    • NASA-LLIS-0726 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      End-to-End Compatibility and Mission Simulation testing are conducted on all portions of the Ground Data Systems (GDS). These tests are performed to fully demonstrate the operational compatibility ...

    • NASA-LLIS-1508 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Credibility in cost and schedule estimating is key in convincing stakeholders that a program can execute within resource constraints. Place emphasis on providing credible cost and schedule ...
      Subject(s) : Communication Systems , Independent Verification and Validation , NASA Standards ,

    • NASA-TR-R-300 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1969
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Transonic wind tunnel tests of aerodynamic drag and lift forces on circular cylinder in two dimensional flow at high Reynolds number
      Subject(s) : AERODYNAMIC , CIRCULAR , CYLINDERS , DIMENSIONAL , DRAG , FLOW , LIFT , LOADS , NUMBER , OSCILLATING , PRESSURE , RANDOM , REYNOLDS , STABILITY , STATIC , STROUHAL , TESTS , TRANSONIC , TUNNEL , TUNNELS , TWO , WIND ,

    • NASA-LLIS-1824 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2008
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      As part of the Exploration Systems Mission Directorates (Code T) Lessons Learned Project, Kennedy Space Center has compiled the results of ongoing Lessons Learned interviews and a Lessons ...

    • NACA-TR-1304 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1957
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A flight investigation to determine the effectiveness of an automatic aileron trim control device installed in a personal airplane to augment the apparent spiral stability has been conducted. The device utilizes a rate-gyro ...

    • NASA-TN-D-926 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1961
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A wind-tunnel investigation has been conducted to determine the effect of ground proximity on the aerodynamic characteristics of thick highly cambered rectangular wings with aspect ratios of 1. 2, 4, and 6. The results ...
      Subject(s) : AERODYNAMIC , AERODYNAMICS , ANGLE , ASPECT , ATTACK , CAMBERED , CHARACTERISTICS , COEFFICIENTS , DRAG , EFFECT , END , FAIRINGS , GROUND , INDUCED , LIFT , LONGITUDINAL , LOW , PLATES , RATIO , RECTANGULAR , SLOPES , STABILITY , STATIC , TESTS , TUNNEL , WIND , WINGS ,

    • NACA-TN-2957 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1953
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The flow fields at the propeller planes of six 40° sweptback semispan wing-fuselage-nacelle combinations were surveyed to provide data to enable the study of the characteristics of the flow fields and their effect on ...

    • NACA-TN-2440 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1951
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A wind-tunnel investigation has been conducted to determine the effects of end plates of various areas and shapes on the aerodynamic characteristics of an unswept and untapered wing of aspect ratio 4.
      The results were ...
      Subject(s) : AIRFOILS , ASPECT , CHARACTERISTICS , END , MOMENTS , NACA , ORDINATES , PITCHING , PLATES , RATIO , RECTANGULAR , STABILITY , TESTS , TUNNEL , WIND , WING , WINGS ,

    • NASA-LLIS-0467 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      On August 22, 1992 an Atlas/Centaur Launch Vehicle (Atlas 1, Launch AC-71) carrying a Hughes Galaxy I-R Spacecraft was destroyed in flight. The Centaur C-1 engine had ...
      Subject(s) : Hardware , Launch Vehicle ,

    • NASA-LLIS-0277 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Voyager inflight receiver failures required rapid development of operational workaround procedures. This required the facilities of the Telecommunications Development Laboratory (TDL), but ...
      Subject(s) : Administration/Organization , Facilities , Flight Operations , Institutional , Management , RF Performance Verification ,

    • NASA-TP-1419 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1979
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The trailing-wing sensor technique was used in the Langley V/STOL tunnel to determine the effectiveness of 11 combinations of the existing flight-spoiler segments on a jumbo-jet transport aircraft model when they were ...
      Subject(s) : AERODYNAMIC , AIRCRAFT , COEFFICIENTS , DEFLECTION , LOW , MODELS , MOMENTS , PITCHING , ROLLING , SPEED , SPOILERS , TESTS , TRANSPORT , TUNNEL , TUNNELS , VORTICES , WAKES , WIND ,

    • NASA-LLIS-1308 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Some unanticipated modifications were necessary to some heritage hardware and software.
      Subject(s) : Administration/Organization ,

    • NACA-RM-L55K11 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1956
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Wind-tunnel results at high subsonic speeds pertaining to rolling-stability derivatives for lifting conditions have been obtained for a fairly wide range of wing plan forms (refs. 1 to 3). These derivatives ...

    • NACA-RM-53L22 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1954
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Additional static and fatigue tests were made on aluminum-alloy 355-T6 sand-cast specimens. Direct-stress fatigue tests were made on plate-type specimens with a single l-inch-diameter as-cast cored hole and on specimens ...

    • NASA-TN-D-2331 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1964
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Axial load fatigue-crack propagation in titanium and stainless steel alloys.
      Subject(s) : AXIAL LOAD , AXIAL LOADS , CRACK PROPAGATION , FATIGUE , FATIGUE (MATERIALS) , HEAT RESISTANT ALLOYS , RENE 41 , STAINLESS STEEL , STAINLESS STEELS , TITANIUM ALLOY , TITANIUM ALLOYS ,