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

Now showing items 321-340 of 3613

    • NASA-08810S 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2005
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This broadscope section covers single-glass lights set in metal or wood sash.

    • NACA-RM-L53H31 REV A 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1953
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      It was shown in reference 1 that near the speed of sound, the zero- 1 lift drag rise for a thin low-aspect-ratio wing-body combination is primarily dependent on the axial distribution of cross-section area ...

    • NASA-TN-963 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1945
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The apparent friction coefficient was determined experimentally for the flow of air through smooth pipes at subsonic and supersonic velocities. Values of the Lach number ranged from 0.27 to 3.87 and of Reynolds number from ...

    • NASA-LLIS-4580 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A change management process should be developed at program/project inception and implemented with rigor. An automated system for change management would be best.

    • NASA-LLIS-0360 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The X-31 is an inherently unstable experimental aircraft. Its dynamic stability is dependent on air data from the Pitot-static system. Unexpected icing of the single-string ...
      Subject(s) : Aircraft , Flight Equipment , Safety & Mission Assurance ,

    • NASA-LLIS-0108 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The helium injection system introduces a controlled flow of helium into the aft end of the feedline to prevent geysers during propellant loading and holds before launch. ...
      Subject(s) : Ground Equipment , Ground Operations , Launch Process , Launch Vehicle ,

    • NASA-LLIS-1016 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1997
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Collision Avoidance Maneuvers of the ISS Require Close, Real-Time Cooperation Between NASA and US Space Command.
      Subject(s) : Administration/Organization , Aerospace Safety Advisory Panel , Communication Systems , Computers , Emergency Preparedness , External Relations , Flight Operations , Policy & Planning , Risk Management/Assessment , Safety & Mission Assurance , Spacecraft ,

    • NASA-LLIS-2616 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2010
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Design decisions made early in a program's development can significantly affect the operational efficiency of the delivered vehicle. There seems to have been a lack of appreciation of this ...

    • NASA-LLIS-0728 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Applies a formal Flight Assurance inspection system for mechanical fasteners used in flight hardware and critical applications on ground support equipment (GSE), including all flight hardware/ ...

    • NASA-LLIS-1828 

      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 (HQ Code T) Lessons Learned Project, a lessons learned workshop was held at the Dryden Flight Research Center on July 22,2004.

    • NACA-TR-571 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1937
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This report presents the results of pressure-distribution tests of a Clark y wing model with a partial-span split flap made to determine the distribution of air loads over both the wing and the flap. The model was used in ...
      Subject(s) : DISTRIBUTION , FLAPS , FORCES , LOAD , PRESSURE , RECTANGULAR , SPLIT , TESTS , TUNNEL , WIND , WINGS ,

    • NACA-TR-1336 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1957
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation has been made to determine the aerodynamic characteristics of the NACA 4-(5)(05)-041 four-blade, single-relation propeller and the NACA 4-(5)(05)-037 six- and eight-blade, dual-rotation propellers in ...
      Subject(s) : AERODYNAMIC , AIRCRAFT , ANGLES , BLADES , CHARACTERISTICS , COWLINGS , DISTRIBUTION , EFFICIENCY , GEOMETRY , PARTS , PRESSURE , PROPELLER , PROPELLERS , RECOVERY , SPINNERS , STATIC , TESTS , THRUST , TUNNEL , VELOCITY , WIND ,

    • NASA-TN-D-1024 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1962
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Surface defects on typical transonic aircraft and their drag contribution
      Subject(s) : AIRCRAFT , DEFECTS , DRAG , FRICTION , SKIN , SUPERSONIC , SURFACE , TRANSONIC ,

    • NACA-TN-2972 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1953
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Afterbody pressure distributions and wave drag were calculated using a second-order theory for a variety of conical boattails at zero angle of attack. Results are presented for Mach numbers from 1.5 to 4.5, area ratios ...
      Subject(s) : AERODYNAMIC , AFTERBODIES , ANGLE , ATTACK , BOATTAILS , BODIES , COMPUTATION , CONICAL , DISTRIBUTION , DRAG , DUCTED , FINENESS , LOADS , MACH , NUMBER , PRESSURE , RATIO , REDUCTION , WAVE , ZERO ,

    • NASA-CR-114750 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1974
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A research and development program in variable conductance heat pipe technology is reported. The project involved: (1) theoretical and/or experimental studies in hydrostatics, (2) hydrodynamics, (3) heat transfer into and ...
      Subject(s) : EQUIPMENT SPECIFICATIONS , HEAT PIPES , OAO 3 , PERFORMANCE TESTS , PRODUCT DEVELOPMENT , RESEARCH PROJECTS , THERMODYNAMIC PROPERTIES ,

    • NASA-LLIS-0470 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Various times throughout 1960-1975, functional problems were encountered because a set of connectors were unmated or contacts in the connector were deformed as a result ...
      Subject(s) : Hardware , Parts Materials & Processes ,

    • NASA-LLIS-0279 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The Mariner '69 Scan Platform and the Viking Orbiter Imaging Instrument Filter Wheel were operated with relative position stepping commands. In both cases, anomalies caused actual position ...
      Subject(s) : Design , Operations , Spacecraft ,

    • NASA-TP-1619 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1980
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A numerically generated orthogonal coordinate system (with the body surface and shock wave as opposite boundaries) was applied with a time asymptotic method to obtain steady flow solutions for axisymmetric inviscid flow ...
      Subject(s) : BLUNT , BODIES , BOUNDARY , COORDINATES , DISTRIBUTION , FLOW , GENERATION , GRID , INVISCID , MATHEMATICS , ORTHOGONALITY , PROBLEMS , SHOCK , STEADY , SUPERSONIC , VALUE , WAVES ,

    • NASA-LLIS-1310 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      On February 19, 2002, an incident occurred during the hot-fire testing of the Army vortex thrust chamber assembly at MSFC Test Stand 115. This was the fourth hot-fire test ...
      Subject(s) : Ground Operations , Pressure Vessels , Range Operations , Research & Development , Risk Management/Assessment , Safety & Mission Assurance , Test & Verification , Test Article , Test Facility ,

    • NACA-RM-L55L19 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1956
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Many of the trends in the design of present-day fighter aircraft have increased the problems of providing adequate lateral and directional stability and of properly estimating tail loads. This is particularly ...