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

Now showing items 1241-1260 of 3613

    • NASA-LLIS-0202 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      In the early morning hours before launch, a KSC ice team performed an inspection of the Challenger and pad. Their specific aim was to check for the amount and type of ice. ...
      Subject(s) : Environment , Flight Equipment , Ground Equipment , Ground Operations , Test & Verification ,

    • NACA-TN-766 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1940
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Studies were made of the air movements in the NACA glass-cylinder apparatus using cylinder heads similar to those on the Wright R-1820-G engine and the Pratt & Whitney Wasp engine as modified by the Eclipse Aviation ...

    • NASA-TN-D-5361 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1969
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Jet fighter aircraft lateral directional stability at high angles of attack
      Subject(s) : AERODYNAMIC , AIRCRAFT , ANGLE , ATTACK , CONFIGURATIONS , DIRECTIONAL , FIGHTER , FLOW , LATERAL , STABILITY , SWEPT , TESTS , TUNNEL , VISUALIZATION , WIND , WINGS ,

    • NASA-LLIS-1225 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Part shortages, late engineering changes, and manufacturing difficulties have resulted in a number of minor differences between the structural test article (STA) and the ...
      Subject(s) : Administration/Organization , Configuration Management , External Relations , Hardware , Policy & Planning , Procurement Small Business & Industrial Relations , Research & Development , Risk Management/Assessment , Safety & Mission Assurance , Software , Test & Verification ,

    • NASA-LLIS-0809 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Perform a thermal analysis of each electronic assembly to the piece-part level. Provide a heat conduction path for all parts whose junction temperature rise exceeds 35°C above the cold plate.

    • NASA-TN-D-3791 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1967
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Vibration analysis of cylindrically curved panels with simply supported or clamped edges.
      Subject(s) : CLAMPS , CONSTRUCTION MATERIALS , CURVED PANEL , CURVED PANELS , DYNAMIC STRUCTURAL ANALYSIS , EDGES , STRUCTURAL MATERIAL , VIBRATIONAL FREQUENCY ,

    • NACA-WRL-398 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1943
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The method of moment distribution, originally developed by hardy Cross (reference 1) as a convenient means of stress analysis, was extended (reference 2) to solve problems in the stability of bars under axial load. For ...
      Subject(s) : FLAT-RECTANGULAR , LOADS-BARS , LOADS-PLATES , MOMENT DISTRIBUTION-CROSS , PLATES , PLATES , FLAT-BUCKLING , PLATES , FLAT-COMPRESSION , PLATES-STABILITY , RECTANGULAR , STRESSED SKIN-PLATES , RECTANGULAR , TABLES-STIFFNESS ,

    • NASA-LLIS-0065 

      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 shear mode resonant dampening (SMRD) lab is utilized to support the process of applying SMRD material to printed circuit boards. Problems were encountered with one of ...
      Subject(s) : Energy , Facilities , Hardware , Parts Materials & Processes ,

    • NASA-LLIS-0996 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1997
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Implementation of the Space Flight Operations Contract (SFOC).
      Subject(s) : Administration/Organization , Aerospace Safety Advisory Panel , Ground Operations , Human Resources & Education ,

    • NACA-TN-3782 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1957
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The local buckling of stiffener sections and the buckling of plates with sturdy stiffeners are reviewed, and the results are summarized in charts and tables. Numerical values of buckling coefficients are presented for ...
      Subject(s) : BUCKLING , COEFFICIENTS , COMPOSITE , COMPRESSIVE , CURVED , ELASTIC , FORCES , HANDBOOKS , LOADS , MEMBERS , PANELS , PLASTIC , PLATES , PROPERTIES , SHEAR , STABILITY , STIFFENING , STRENGTH , STRUCTURAL , STRUCTURES , TORSION ,

    • NASA-TM-X-71627 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1974
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A literature survey on low-frequency core engine noise is presented. Possible sources of low frequency internally generated noise in core engines are discussed with emphasis on combustion and component scrubbing noise. An ...
      Subject(s) : ACOUSTICS , CORES , ENGINE NOISE , INLET FLOW , JET AIRCRAFT NOISE , LOW FREQUENCIES , PREDICTION ANALYSIS TECHNIQUES , TURBOFANS ,

    • NASA-LLIS-0624 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The Sea Winds test program demonstrated that semi-rigid coaxial RF cable failures are difficult to avoid. Semi-rigid RF cable failures often cannot be detected by visual examination. During ...
      Subject(s) : coax cable , coaxial cable , developmental model , Parts Materials & Processes , Test & Verification , waveguide ,

    • NASA-LLIS-1454 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Inefficiencies were created because some personnel did not have necessary security clearances for conduction of the investigation.
      Subject(s) : Accident Investigation , Administration/Organization , NASA Standards , Policy & Planning , Safety & Mission Assurance , Security ,

    • NASA-LLIS-0852 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Use solid state Programmable Logic Controllers (PLC's) in system/equipment design to control and monitor systems and processes.

    • NASA-CR-1783 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1971
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Full scale wind tunnel tests of low wing, single engine, light aircraft with positive and negative propeller thrust and up and down flap deflection - graphs

    • NACA-RM-A53C20 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1953
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Research is in progress at the various NACA facilities to determine the aerodynamic characteristics of flap-type, trailing-edge elevons on low-aspect-ratio wings at both subsonic and supersonic speeds. The ...

    • NASA-LLIS-0459 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1996
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      On August 1,1996, contractor personnel were removing the gaseous nitrogen Pressure Control Valve 214(PCV-214) in the A-2 Test Stand Pressure Reducing Area (PRA). As a ...
      Subject(s) : Facilities , Pressure Vessels , Safety & Mission Assurance ,

    • NACA-TN-427 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1932
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This report is the first of a series presenting the results of strength tests on thin-walled cylinders and truncated cones of circular and elliptical section; it comprises the results obtained to date from torsion (pure ...
      Subject(s) : ALCOA , ALLOYS , ALUMINUM , CIRCULAR , CYLINDERS , SHEET , SKIN , STRENGTH , STRESSED , TRUNCATED ,

    • NASA-LLIS-0183 

      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 SRM segments are transported horizontally by standard 200-ton capacity railcars with hydraulic couplers. It was determined that the transportation design requirements ...
      Subject(s) : Flight Equipment , Ground Operations , Hardware ,

    • NASA-LLIS-1205 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      During recent Multi-Purpose Logistics Module (MPLM, S/N FM1) operations, loose debris generated by rivets from the Personnel Access Floor (PAF, S/N 002) was discovered. ...
      Subject(s) : Aircraft , Configuration Management , Flight Equipment , Flight Operations , Ground Equipment , Ground Operations , Hardware , Parts Materials & Processes , Payloads , Safety & Mission Assurance , Spacecraft , Standard ,