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

Now showing items 1421-1440 of 3613

    • NASA-LLIS-0009 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1991
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Low flow rates were observed in the shuttle orbiter freon coolant loops when the temperatures in the radiator panels dropped below minus 60 degrees Farenheit during a ...
      Subject(s) : Flight Equipment , Launch Vehicle , Parts Materials & Processes ,

    • NASA-LLIS-0942 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      An individual was using a 10 inch long by 3/16th inch T-handled Allen wrench to extract screws. While attempting to remove the screws the Allen wrench broke in half resulting ...
      Subject(s) : Facilities , Flight Equipment , Flight Operations , Ground Equipment , Ground Operations , Industrial Operations , Packaging Handling Storage , Personal Protective Equipment , Safety & Mission Assurance ,

    • NACA-TN-4200 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1958
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The wing employed in this investigation had a 67-percent-chord slotted flap in combination with a 33-percent-chord plain rear flap equipped with a full-span blowing nozzle. The tests were conducted in a static-thrust ...
      Subject(s) : AIRPLANES , COMPLETE , DEVICES , HIGH , LIFT , LONGITUDINAL , PERFORMANCE , PROPELLERS , SLIPSTREAM , STABILITY , STATIC , WINGS ,

    • NASA-CR-2018 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1972
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A comprehensive review and analysis of all aspects of heat pipe technology pertinent to the design of self-controlled, variable conductance devices for spacecraft thermal control is presented. Subjects considered include ...
      Subject(s) : HEAT PIPES , HEATING EQUIPMENT , SELF ADAPTIVE CONTROL SYSTEMS , SPACECRAFT COMPONENTS , STRUCTURAL DESIGN , TEMPERATURE CONTROL , THERMAL CONDUCTORS ,

    • NASA-LLIS-0557 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1997
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A "maintenance-free", lead acid battery, of the set in a Uninterruptable Power Supply (UPS) cabinet, exploded during normal operations. The investigation determined that ...

    • NACA-TR-921 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1948
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A method is shown by which the symmetric span loading for a certain class of wings can be simply found. The geometry of these wings is limited only to the extent that they must have symmetry about the root chord, must have ...

    • NASA-LLIS-0933 

      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 failure occurred at the Transonic Dynamics Tunnel (TDT) when a blade separated from a rotor (i. e., an airplane propeller). The incident did not result in damage to the ...
      Subject(s) : Configuration Management , Test Facility ,

    • NACA-TN-4040 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1957
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A method is presented whereby incremental pitching moments can be estimated for swept and triangular wings having arbitrary types of trailing-edge high-lift flaps. In the method use is made of span-loading theory together ...

    • NASA-LLIS-1307 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The satellite simulator became an invaluable tool for software testing, flight operations crew training, and on-orbit software change testing.
      Subject(s) : Training Equipment ,

    • NASA-CR-267 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1965
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Rotating beam fatigue tests of magnesium, steel and titanium alloys in dry and moist environments
      Subject(s) : BRASSES , DRYING , ENVIRONMENTAL TESTING , ENVIRONMENTAL TESTS , FATIGUE TEST , FATIGUE TESTS , MAGNESIUM ALLOY , MAGNESIUM ALLOYS , ROTATION , STEEL , STEELS , TITANIUM ALLOY , TITANIUM ALLOYS ,

    • NASA-LLIS-0530 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      In situ airborne measurements of the turbulent flux and mean values of O3, CO and CH4 were obtained in the boundary layer over selected wetland systems in Alaska. These ...
      Subject(s) : Research & Development ,

    • NASA-LLIS-1294 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Rigorous peer reviews of spacecraft bus software resulted in good on-orbit performance. A lack of rigorous peer reviews of the instrument software have resulted in numerous ...
      Subject(s) : Computers , Configuration Management , Flight Equipment , Independent Verification and Validation , Payloads , Risk Management/Assessment , Software , Spacecraft , Test & Verification ,

    • NACA-TN-4394 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1958
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A general method has been developed for the determination of fatigue-crack propagation rates. In order to provide a check on the theoretical predictions and to evaluate certain empirical constants appearing in the expression ...

    • NASA-MEMO-5-20-59 REV L 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1959
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation has been conducted in the Langley free-flight tunnel at low-subsonic speeds to provide some basic information on the stability and control characteristics in the high angle-of-attack range of an airplane ...

    • NASA-LLIS-6696 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A failure in the system-level testing of the MSL Robotic Arm was traced to GSE wiring that was mis-connected. Because re-test was not feasible, the functionality was verified by analysis. For system-level thermal testing ...

    • NASA-LLIS-0143 

      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 ESP and ECP are designed to support maintenance and replacement of space shuttle main engines (SSME's) while the orbiter is in a vertical position. Both platforms ...
      Subject(s) : Facilities , Ground Equipment , Ground Operations , Lifting Devices ,

    • NASA-LLIS-3758 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Ares I-X showed the importance of concurrent engineering for large multiple-center projects. The team responsible for generating the processing procedures and for supporting ...
      Subject(s) : Contractor relationships , Ground processing and manifesting , Launch support systems , Launch Systems , Level II/III requirements definition , Logistics and maintenance , Organizational Planning , Program level review processes , Program planning , development , and management , Review boards , Risk management , Spacecraft and Spacecraft Instruments , Vehicle concepts ,

    • NASA-LLIS-1148 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Potential Inadequate International Space Station (ISS) Downlink Encryption
      Subject(s) : Aerospace Safety Advisory Panel , Computers , Ground Operations , Policy & Planning , Risk Management/Assessment , Security , Software ,

    • NASA-TN-D-7205 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1973
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation has been conducted to determine the effects of flap span and wing aspect ratio on the static longitudinal aerodynamic characteristics and chordwise and spanwise pressure distributions on the wing and ...
      Subject(s) : AERODYNAMIC , AIRCRAFT , BLOWN , CHARACTERISTICS , COEFFICIENTS , CONFIGURATIONS , DISTRIBUTION , EXTERNALLY , FLAPS , FLOW , MODELS , PRESSURE , SHORT , STATIC , TAKEOFF , TUNNEL , WIND ,

    • NACA-TN-2175 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1950
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation has been conducted in the Langley stability tunnel to determine the effect of an unswept wing on the contribution of unswept-tail configurations to the low-speed static-and rolling-stability derivatives ...
      Subject(s) : COMBINATION , COMBINATIONS , DOWNWASH , FUSELAGE , HORIZONTAL , INTERFERENCE , INTERFERENCES , LATERAL , NACA , POSITION , SIDEWASH , STABILITY , STATIC , SURFACE , SURFACES , TAIL , TESTS , TUNNEL , WIND , WING , WINGS ,