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

Now showing items 3261-3280 of 3613

    • NASA-LLIS-0822 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      A small test fixture has been specifically designed for conducting vibration/thermal tests on small test specimens such as ignitors and detonators. This test fixture creates much smaller loads ...

    • NACA-TN-1928 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1949
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A solution is presented for the problem of the buckling of curved rectangular panels subjected to combined shear and direct axial stress. Charts giving theoretical critical combinations of shear and direct axial stress are ...
      Subject(s) : PLATES - BUCKLING CURVED , PLATES - BUCKLING RECTANGULAR , PLATES - COMPRESSION CURVED , PLATES - COMPRESSION RECTANGULAR , PLATES - STRESSES , SHEARING CURVED , PLATES , FLAT - SHEAR RECTANGULAR , STRESSED SKIN - PLATES ,

    • NASA-LLIS-0032 

      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 HVAC chilled water boost pumps are located on the 120-foot level of the rotating service structure (RSS). The start/stop controls and circuit breakers (disconnects) ...
      Subject(s) : Energy , Facilities , Ground Equipment , Ground Operations , Hardware , Human Factors , Industrial Operations , Launch Process , Safety & Mission Assurance ,

    • NASA-TN-D-2180 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1964
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Longitudinal aerodynamic characteristics of semispan v/stol tilt-wing configuration with single rotating propeller
      Subject(s) : AERODYNAMIC , AERODYNAMICS , AIRCRAFT , ATTITUDE , CHARACTERISTICS , CONTROL , FLAPPING , INCLINATION , LONGITUDINAL , PROPELLERS , ROTATION , STABILITY , STOL , TILT , WING , WINGS ,

    • NASA-LLIS-0964 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Prior to starting the engine, there is a period of time referred to as the start preparation phase. At the beginning of this time period, the oxidizer side of the engine ...
      Subject(s) : Configuration Management , Cryogenic Systems , Ground Equipment , Hardware , Launch Vehicle , Parts Materials & Processes , Safety & Mission Assurance , Spacecraft , Test Article , Test Facility ,

    • NASA-LLIS-0620 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Upon closing a Shuttle AC Motor Valve during a cycling test, the pressure force differential across the valve deformed the Teflon interface a1dapter for a butt joint at ...
      Subject(s) : Hazardous/Toxic Waste/Materials , Safety & Mission Assurance ,

    • NASA-LLIS-1402 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2004
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Engineering sensors included on board the Spirit and Opportunity Mars Exploration Rovers were inadequate to allow an unambiguous physical reconstruction of vehicle performance during the ...
      Subject(s) : Flight Operations , Hardware , Program and Project Management , Risk Management/Assessment , Safety & Mission Assurance , Spacecraft ,

    • NASA-TM-78709 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1979
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The status of NASA low and medium speed airfoil research is discussed. Effects of airfoil thickness-chord ratios varying from 9 percent to 21 percent on the section characteristics for a design lift coefficient of 0.40 are ...
      Subject(s) : AERODYNAMIC , AIRCRAFT , AIRFOILS , ASSESSMENT , AVIATION , COEFFICIENTS , DESIGN , GENERAL , LOW , RATIO , SPEED , STRUCTURAL , TECHNOLOGY , TESTS , THICKNESS , TUNNEL , WIND ,

    • NASA-LLIS-3157 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2010
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      When Environmental Control System (ECS) purge support requirements for the Orbiter were originally developed, they identified the parameters of the purge and when a purge should be started ...
      Subject(s) : Configuration control and data management , Ground processing and manifesting , Ground support systems , Mission concepts and life-cycle planning , Planning of requirements verification processes ,

    • NASA-LLIS-0154 

      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 quick disconnect/filter assemblies are designed to provide a disconnect interface and remove all solid particles which exceed 25 microns. The fluids being filtered ...
      Subject(s) : Configuration Management , Ground Equipment , Ground Operations ,

    • NACA-RM-L57C08 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1957
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The present investigation was made to supplement the study (ref. 1) of tail configurations on a straight-wing model by including additional types of tail configurations on a sweptback-wing model. The primary ...

    • NASA-LLIS-1177 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      International Space Station (ISS) Multiplexer-Demultiplexer (MDM) Central Processor Unit (CPU) Utilization Design Limit.
      Subject(s) : Computers , Configuration Management , Flight Operations , Information Technology/Systems , Policy & Planning , Risk Management/Assessment , Software , Test & Verification ,

    • NACA-TN-3135 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1954
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Tests were made on three circular-arc-fuselage and nine unswept-vertical-tail models in order to investigate interference effects between fuselages and vertical tails in sideslip. The mutual interference effects, and thus ...

    • NASA-LLIS-0708 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Missions with payloads that can interact strongly with the ambient plasma, such as a high power electron beam, a high power RF source, or an ion engine, may require a structural current test ...

    • NACA-TR-941 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1949
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The effects of propeller operation on the static longitudinal stability of single-engine tractor monoplanes are analyzed, and a simple method is presented for computing power-on pitching-moment curves for flap-retracted ...

    • NASA-LLIS-0004 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1991
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      On November 21, 1989 two shuttle orbiter tires skidded sufficiently to cause blowouts following the application of brakes during a ground test at Wright Patterson Air Force ...
      Subject(s) : Configuration Management , Ground Equipment , Ground Operations , Test & Verification , Test Article , Test Facility ,

    • NASA-LLIS-0938 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Neither the MPL software requirements specification nor the software, subsystem or system test plans required verification of immunity to transient signals. MPL touchdown sensors generated ...
      Subject(s) : Flight Equipment , Hardware , Policy & Planning , Risk Management/Assessment , Safety & Mission Assurance , Software , Software Test , Spacecraft , System Integration and Test , Test & Verification , Test Article , Test Planning ,

    • NACA-TN-4077 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1957
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Results are presented of tests conducted in the Langley stability tunnel to determine the effects of various components and combinations of components on the static longitudinal and lateral stability characteristics at low ...
      Subject(s) : AIRPLANES , ASPECT , COMBINATION , COMPLETE , COMPONENTS , DIRECTIONAL , LATERAL , LONGITUDINAL , RATIO , STABILITY , STATIC , SWEEP , WINGS ,

    • NASA-CR-1056 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1968
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Nacelle design for turbofan engine compressor noise suppression on Douglas DC-8 aircraft.
      Subject(s) : DC 8 AIRCRAFT , ENGINE NOISE , JET AIRCRAFT NOISE , NACELLES , NOISE REDUCTION , TURBOCOMPRESSORS , TURBOFAN ENGINES , WIND TUNNEL MODELS ,

    • NASA-LLIS-0535 

      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 MIDAS, thin ceramic boards (1-inch x 1-inch x .030-inch thick) were bonded to a 1-inch hollow copper cube. The bond was cured at 75C, and then the assembly was cooled ...
      Subject(s) : Hardware , Parts Materials & Processes ,