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

Now showing items 2781-2800 of 3613

    • NASA-TN-D-3095 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1966
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Cryogenic para hydrogen heat transfer data at near critical pressures and temperatures for advanced propulsion system coolant.
      Subject(s) : COOLANTS , CRITICAL PRESSURE , CRITICAL TEMPERATURE , CRYOGENIC FLUID , CRYOGENIC FLUIDS , CRYOGENICS , HEAT TRANSFER , HIGH PRESSURE , HYDROGEN , NUSSELT NUMBER , PARA HYDROGEN , PROPULSION , PROPULSION SYSTEM , SUPERCRITICAL PRESSURES ,

    • NACA-ARR-L4121 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1944
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A number of samples of flight acceleration data taken by the National Advisory Committee for Aeronautics under a variety of operating conditions were evaluated to determine the total frequencies and the frequency distribution ...
      Subject(s) : ACCELERATIONS , GUST , LOADS , METEOROLOGY - GUSTS - VELOCITY ,

    • NASA-LLIS-0061 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      On November 8, 1985, the forward center segment of a solid rocket motor (SRM) was damaged during forward handling ring removal operations. During the operation leading to ...
      Subject(s) : Facilities , Ground Equipment , Hardware , Launch Process , Lifting Devices , Packaging Handling Storage ,

    • NASA-LLIS-0992 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Contamination analysis does not always identify contamination sources or complex migration paths. Designs should keep camera systems and thermal control surfaces away from vent paths and/or ...
      Subject(s) : Flight Equipment , Flight Operations , Hardware , Parts Materials & Processes , Payloads , Safety & Mission Assurance , Spacecraft , Subsystem and Instrument Development , Test & Verification ,

    • NASA-CR-121024 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1972
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A computer design program was developed to incorporate the suction slots in solving the potential flow equations with prescribed boundary conditions. Using the contour generated from this program two Griffith diffusers ...
      Subject(s) : BOUNDARY CONDITIONS , BOUNDARY LAYER CONTROL , COMPUTER AIDED DESIGN , DIFFUSERS , FLOW VELOCITY , SUCTION , WALLS ,

    • NASA-LLIS-0660 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      To maximize system reliability (fail safe) through use of Flow Fuses when designing pneumatic or hydraulic systems for either facilities or ground support applications.

    • NASA-LLIS-1450 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Data needs to be delivered in familiar, commonly-used formats compatible with IT/CM tools to avoid unnecessary administrative effort to archive.
      Subject(s) : Accident Investigation , Administration/Organization , Computers , Configuration Management , Information Technology/Systems , NASA Standards , Policy & Planning , Safety & Mission Assurance , Security ,

    • NASA-LLIS-0888 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The New Millennium Program's first Earth-Observing mission (EO-1) is a technology validation mission designed to flight-validate advanced imaging technologies applicable ...
      Subject(s) : Flight Equipment , Human Factors , Human Resources & Education , Risk Management/Assessment , Spacecraft ,

    • NACA-TN-2587 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1951
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation was made to determine the influence of the wing and fuselage on the vertical-tail contribution to the low-speed rolling derivatives of midwing airplane models with 45° sweptback surfaces.
      The ...

    • NASA-CR-1160 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1968
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Bucking of thin-walled electroplated copper and Mylar circular cylinders under axial compression and bending
      Subject(s) : AXIAL , BENDING , BUCKLING , CHARTS , CIRCULAR , COMPRESSION , COPPER , CYLINDERS , DATA , DISTRIBUTION , ELECTROPLATING , GRAPHS , LOADS , MYLAR , STRESS , TABLES , THIN , TRADEMARK , WALLS ,

    • NACA-RM-A52L16 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1953
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The low-speed aerodynamic characteristics of triangular-wing airplane models having wings of aspect ratios. 2, 3, and 4 have been under investigation in the Ames k-O- by &-foot wind tunnel, and results ...

    • NASA NPD 1450.12 REV D 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2009
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Applicability
      This directive is applicable to NASA Headquarters and NASA Centers, including Component Facilities.
      This directive is not applicable to matters related to or involving NASA administrative ...

    • NASA-LLIS-0180 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A case dimensional change study performed as part of the 51-L failure analysis effort produced the diameter change results. The potential cause for this phenomenon is ...
      Subject(s) : Hardware , Parts Materials & Processes ,

    • NACA-TN-412 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1932
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A number of airfoils, including 14 commonly used airfoils and 10 NACA airfoils, were tested through the negative angle-of-attack range in the NACA variable-density wind tunnel at a Reynolds Number of approximately 3,000,000. ...

    • NASA-LLIS-1201 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Encoder channels on 44 MER motors were damaged during test due to an improperly inspected cable, lack of safe-to-mate provisions, inadequate test coverage by QA, and failure to verify encoder ...
      Subject(s) : connector mating , electrical test , Flight Equipment , functional test , Ground Equipment , Ground Operations , ground support equipment , Hardware , Payloads , quality assurance oversight , safe-to-test , Safety & Mission Assurance , Spacecraft , Test & Verification , test error , Test Facility , test incident , test induced damage , test oversight , test safety ,

    • NASA-STD-7003 REV A 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Purpose
      The purpose of this Standard is to provide a consistent methodology for developing pyroshock test criteria for NASA spacecraft, payload, and launch vehicle hardware during the development, ...

    • NASA-LLIS-1861 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2010
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      It was necessary to use a WR34 waveguide for the Lunar Reconnaissance Orbiter (LRO) traveling wave tube amplifier (TWTA) because the operating frequency would be 25.65 GHz, and the existing ...
      Subject(s) : Engineering Design (Phase C/D).Spacecraft and Spacecraft Instruments ,

    • NASA-LLIS-0823 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Modal testing is a structural testing practice that provides low levels of mechanical excitation to a test structure and measures its response to that excitation. This response is then analyzed ...

    • NACA-TN-2021 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1950
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation was made of a thin-walled cylinder under axial compression and various internal pressures to study the effect of the internal pressure on the compressive buckling stress of the cylinder. A theoretical ...
      Subject(s) : ALUMINUM ALLOYS , ANALOGIES , AXIAL COMPRESSION LOADS , BUCKLING , COMPUTATION , CYLINDERS , CYLINDRICAL SHELLS , DEFLECTION , EXPERIMENTATION , INTERNAL PRESSURE , THIN WALLED SHELLS ,

    • NASA-LLIS-0033 

      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 1500-pound withdrawal weight for the ET LH2 vent line must be raised to access the withdrawal weight shock absorbers to perform maintenance. Personnel work directly ...
      Subject(s) : Facilities , Ground Equipment , Ground Operations , Hardware , Industrial Operations , Launch Process , Launch Vehicle , Lifting Devices , Safety & Mission Assurance ,