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

Now showing items 681-700 of 3613

    • NACA-TR-151 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1923
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This report deals with the air forces on biplane cellule. The first part of the report deals with the two-dimensional problem neglecting viscosity. The variation of the section, chord, gap, stagger, and decalage are ...
      Subject(s) : AERODYNAMIC , AIR , AIRCRAFT , ANGLE , ATTACK , BIPLANES , CENTER , CHORDS , COEFFICIENTS , COMPUTATIONAL , DESIGN , DIMENSIONAL , DRAG , DYNAMIC , DYNAMICS , FLOW , FLUID , FORCES , GEOMETRY , LIFT , MOMENTS , PRESSURE , SECTIONS , STAGGERING , THEORIES , TWO , WINGS ,

    • NASA-LLIS-6347 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Protuberances and cavities can have a significant impact on both the structural and thermal loads of a spacecraft. The outer mold line (OML) of future spacecraft should be as clean as possible, and all protuberances and ...

    • NACA-RM-A50K28 REV A 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1951
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      It has boon noted in previous investigations (e.g., reference 1) that swept-back wings without twist or camber and having small leading-edge radii undergo serious changes in aerodynamic characteristics at ...

    • NASA-LLIS-0661 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Designing a fail-safe ground communication system requires attention to hardware and policy decisions. Ensuring a fail-safe system normally requires some use of redundancy. It also requires ...

    • NASA NPR 7100.1 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2008
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: PURPOSE
      This NASA Procedural Requirements(NPR) outlines the implementing procedures and guidelines for the Agency to conduct or support research involving human subjects.
      These guidelines follow ...

    • NASA-LLIS-1566 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2005
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Most all projects in today's environment invariably require the cooperation and support of multiple organizations both in development and acceptance of project deliverables (including multiple ...
      Subject(s) : Air-Traffic Management , Policy & Planning , Program & Project Management , Research & Development ,

    • NASA-LLIS-1427 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A close call occurred because of a failure to update the maintenance checklist and train personnel after making a system modification. In this incident, the lower aircraft pod had not been ...
      Subject(s) : Accident Investigation , Aircraft , Facilities , Flight Equipment , Flight Operations , Hardware , Human Factors , Mishap Reporting , Safety & Mission Assurance ,

    • NACA-RM-L8D29 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1948
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Results are presented of an investigation in the Langley 19-foot pressure tunnel of the longitudinal characteristics of a semispan model wing having 37 degrees sweepback of the leading edge, an aspect ratio of 6, and NACA ...

    • NASA-STD-8719.9 W/CHG 1 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2007
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This standard applies to overhead and gantry cranes (including top running monorail, underhung, and jib cranes) mobile cranes, derricks, hoists, winches, special hoist supported personnel lifting devices, hydra-sets, load ...

    • NASA-LLIS-5396 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A composite pressure vessel at the Kennedy Space Center ruptured, causing injury to test team personnel. A lack of adequate independent reviews was the root cause of this mishap. A process ...
      Subject(s) : Additional Categories. , Additional Categories.Cryogenic Systems , Additional Categories.Hazardous/Toxic Waste/Materials , Additional Categories.Independent Verification and Validation , Additional Categories.Pressure Vessels , Additional Categories.Test & Verification , Integration and Testing , Program Management. , Program Management.Communications between different offices and contractor personnel , Program Management.Contractor relationships , Program Management.Role of civil service technical staff versus contractor staff , Safety and Mission Assurance. , Safety and Mission Assurance.Advanced planning of safety systems , Safety and Mission Assurance.Review systems and boards , Systems Engineering and Analysis. , Systems Engineering and Analysis.Engineering design and project processes and standards , Systems Engineering and Analysis.Planning of requirements verification processes ,

    • NASA-LLIS-0417 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1996
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Voyager circuit design verification showed that capacitors that were appropriate for use at atmospheric pressures, contained voids that could lead to corona and possible failure in space. ...
      Subject(s) : Environment , Hardware , Test & Verification ,

    • NASA-LLIS-0212 

      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 space shuttle computer system faces a continuing evolution in flight requirements and increased equipment obsolescence accompanied by greater and more expensive ...
      Subject(s) : Computers , Flight Equipment , Launch Vehicle , Software ,

    • NACA-WR-L-511 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1943
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Force-test measurements in two-dimensional flow have been made in the NACA 4- by 6-foot vertical tunnel to determine the aerodynamic effects of changing the alinement of the cover plates on a sealed internally balanced ...

    • NACA-TN-902 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1943
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A simple formula is suggested for describing the stress-strain curve in terms of three parameters; namely, Young's modulus and two secant yield strengths. Dimensionless charts are derived from this formula for determining ...

    • NASA-TN-D-6058 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1970
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Wind tunnel investigation of jet transport airplane configuration with high thrust-weight ratio and external flow jet flap - graphs
      Subject(s) : AERODYNAMIC , AIRCRAFT , BLOWN , CHARTS , CONFIGURATIONS , EXTERNALLY , FLAPS , GRAPHS , JET , LIFT , MODELS , RATIO , SHORT , TAKEOFF , THRUST , TRANSPORT , TUNNEL , WEIGHT , WIND ,

    • NASA-LLIS-1236 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Availability of critical workforce skills and capture of knowledge of existing workforce.
      Subject(s) : Aerospace Safety Advisory Panel , Human Resources & Education , Policy & Planning ,

    • NACA-RM-L9J04 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1949
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The behavior of auxiliary fuel tanks mounted at the tips of straight wings is well established (reference 1) in the region of speeds where compressibility and aeroelastic effects are of ...

    • NASA-TN-D-4602 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1968
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Effect of wheel braking on directional control of pneumatic tires on pavement.
      Subject(s) : ANGULAR VELOCITY , COEFFICIENT OF FRICTION , DIRECTIONAL CONTROL , DRAG , GROUND SPEED , INFLATING , PAVEMENTS , SIDESLIP , SKIDDING , TIRES , WHEEL BRAKES ,

    • NASA-LLIS-0075 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Three breakout boxes were located on the orbiter aft compartment entrance platform. When two technicians entered the aft compartment, these breakout boxes were knocked off ...
      Subject(s) : Ground Equipment , Ground Operations , Hardware , Launch Process , Launch Vehicle , Safety & Mission Assurance ,

    • NACA-TM-606 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1931
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This report continues the work presented in NACA-TM 605 and expands the scope to include the change in specific number of wrinkles from direction x to z, so that b and f become variable in direction z. Moreover, it seems ...