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

Now showing items 2221-2240 of 3613

    • NACA-TR-651 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1939
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Extensive experimental measurements have been made of the downwash angles and the wake characteristics behind airfoils with and without flaps and the data have been analyzed and correlated with the theory. A detailed study ...

    • NASA-LLIS-1576 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2005
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Sump pumps were replaced in an electrical vault after a failure of both sump pumps. The original equipment was not tagged for inspection by the mishap investigation team.
      Subject(s) : Mishap Reporting ,

    • NASA-TM-X-3222 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1975
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Results of scale model tests of high-throat-Mach-number inlets designed to suppress inlet-emitted engine machinery noise produced in a V/STOL wind tunnel are presented. A vacuum system was used to induce inlet airflow with ...
      Subject(s) : AIRCRAFT , CHARTS , DESIGN , ENGINE , GRAPHS , INLETS , NACELLES , NOISE , REDUCTION , SHORT , TAKEOFF , TESTS , TUNNEL , WIND ,

    • NACA-ACR-L5H08 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1945
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Tests were performed in the Gottingen (Germany) and Guidonia (Italy) supersonic tunnels in order to determine the aerodynamic characteristics of projectiles of various shapes. The Mach numbers ranged from about 1.3 to 3.2 ...

    • NASA-LLIS-0868 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A casing in Cluster #1 of the Underground Air Storage Facility (UASF) ruptured releasing high pressure air (3000 psig) into the substrate at about 500 ft below the surface. ...
      Subject(s) : Administration/Organization , Energy , Ground Equipment , Hardware , Pressure Vessels , Test & Verification , Test Facility ,

    • NACA-TN-3364 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1955
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation of the effectiveness of a wing equipped with large-chord slotted flaps in rotating the thrust vector of propellers through the angels required for vertical take-off and for flight at very low speeds has ...

    • NASA-CR-198300 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1996
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The Fan Noise Module of ANOPP is used to predict the broadband noise and pure tones for axial flow compressors or fans. The module, based on the method developed by M. F. Heidmann, uses empirical functions to predict fan ...
      Subject(s) : AERODYNAMIC NOISE , DATA ACQUISITION , JET ENGINES , NOISE PREDICTION (AIRCRAFT) , NOISE REDUCTION , NOISE SPECTRA , TURBOFANS ,

    • NASA-LLIS-0505 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Subject(s) : Computers , Hardware ,

    • NASA-TN-D-8090 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1976
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A new subsonic method has been developed by which the mean camber surface can be determined for trimmed noncoplanar planforms with minimum vortex drag. This method uses a vortex lattice and overcomes previous difficulties ...
      Subject(s) : AERODYNAMIC , AIRCRAFT , CAMBER , DESIGN , DRAG , LATTICE , LATTICES , MATHEMATICS , METHOD , PLANFORMS , STRUCTURAL , SUBSONIC , VORTEX , VORTICES , WING ,

    • NASA-LLIS-0297 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      When a discrete capacitor was installed in an electronic assembly, a residual charge on the capacitor discharged through an integrated circuit itself and damaged the input circuit of the IC. ...
      Subject(s) : Electronic Parts Handling , Energy , Packaging Handling Storage , Parts Materials & Processes ,

    • NASA-LLIS-1340 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Space Shuttle Main Engine (SSME) test 901-0674 was conducted on November 6, 1991 at 11:31 am CDT. The scheduled 400 second test was terminated by the Command and Data ...
      Subject(s) : Administration/Organization , Communication Systems , Configuration Management , Facilities , Flight Equipment , Ground Equipment , Ground Operations , Hardware , Human Factors , Human Resources & Education , Logistics , Packaging Handling Storage , Parts Materials & Processes , Policy & Planning , Safety & Mission Assurance , Test & Verification , Test Article , Test Facility , Training Equipment , Transportation ,

    • NACA-RM-L9A07 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1949
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The contemplated use of swept wings incorporating sharp-edged air-foil sections for high-speed airplanes has resulted in a need for information concerning the effectiveness of lateral-control devices on ...

    • NASA-STD-8739.6 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This publication sets forth quality requirements for the manufacture of electronic assemblies and for electrostatic discharge (ESD) control which augment requirements found in one or more of the documents.
      Where there ...

    • NASA NASA-TP-1369 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1979
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The various thermal diodes available for use in cryogenic systems are described. Two diode types, liquid-trap and liquid-blockage diodes, were considered to be the most attractive, and thermal models were constructed to ...
      Subject(s) : COOLING SYSTEMS , CRYOGENIC EQUIPMENT , DIODES , HEAT PIPES , LOW TEMPERATURE , SPACECRAFT RADIATORS , TEMPERATURE CONTROL , THERMAL ENVIRONMENTS ,

    • NACA-TM-1375 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1954
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A study is made of the stability of laminar boundary-layer profiles on slightly curved walls relative to small disturbances that result from vortices whose axes are parallel to the principal direction of flow. The result ...
      Subject(s) : FLOW , LAMINAR ,

    • NACA-RM-A8D20 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1948
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A wind-tunnel investigation has been made of a semispan model of a wing swept back 63° having an aspect ratio of 3.5 and a taper ratio (tip chord/root chord) of 0.25. These were conducted to evaluate the effects of ...

    • NASA-LLIS-0308 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Because a design change had been made to the proven Mariner design, the Viking orbiter flight radio modules developed short circuits caused by solder balls shorting terminal lugs to ground. ...
      Subject(s) : Fabrication , Hardware , Parts Materials & Processes , Soldering ,

    • NASA-LLIS-0355 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The Galileo Photopolarimeter Radiometer subsystem cover was damaged on three separate occasions during assembly and test operations. Design all external areas of spacecraft flight hardware ...
      Subject(s) : Hardware Integration , Industrial Operations , Packaging Handling Storage , Spacecraft ,

    • NASA-LLIS-0103 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      An engineer was utilizing a draeger pump to perform toxic vapor checks on A/C motor valves on the 207' level of the rotating service structure. When the engineer attempted ...
      Subject(s) : Ground Operations ,

    • NASA-LLIS-1109 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Reduction in the Annual Limit for Radiation Exposure.
      Subject(s) : Aerospace Safety Advisory Panel , Medical , Policy & Planning , Research & Development ,