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

Now showing items 881-900 of 3613

    • NASA-TR-D-121 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1923
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This report helps explain the phenomenon of flight. It contains some theorems concerning the arrangement of airplane wings which are of considerable practical interest. In particular, it shows the theoretical reasons for ...

    • NASA-RP-1258 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1991
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Flight vehicles and the underlying concepts of noise generation, noise propagation, noise prediction, and noise control are studied. This volume includes those chapters that relate to flight vehicle noise control and ...
      Subject(s) : ACOUSTIC , AEROACOUSTICS , AERODYNAMIC , AIRCRAFT , DESIGN , DUCTS , GENERATORS , JET , MATHEMATICAL , MEASUREMENT , MODELS , NOISE , PREDICTION , PROPAGATION , REDUCTION , SOUND , TOLERANCE , WAVES ,

    • NASA-LLIS-0145 

      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 configuration of the portable hypergol checkout panels located on platforms 6E and 6W in the OPF restricts personnel working in the area from egressing ...

      Subject(s) : Facilities , Human Factors , Risk Management/Assessment ,

    • NASA-LLIS-1150 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Agency-Wide Computer System Vulnerabilities
      Subject(s) : Flight Operations , Ground Operations , Policy & Planning , Risk Management/Assessment , Security , Software ,

    • NACA-TN-1624 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1948
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation was made to determine the effect of leading-edge flaps on the maximum lift coefficient of an NACA 64-009 airfoil and to compare the results with data obtained from previous tests of similarly shaped flaps ...
      Subject(s) : AIRFOILS , CARRIED , CHAR , CHARACTERISTICS , DRAG , EDGE , EFFECT , FLAPS , LEADING , LOW , MOMENTS , NACA , ORDINATES , PRESSURE , ROUGHNESS , SPLIT , SURFACE , TESTS , TUNNEL , TURBULENCE , WIND , WING , WORK ,

    • NASA-LLIS-0767 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Initially, the design requirements for each subsystem are established so that all non-functional emissions will be at least 9 Db below the emission specification limit.

    • NACA-TR-734 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1942
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A chart is presented for the values of the coefficient in the formula for the critical compressive stress at which buckling may be expected to occur in outstanding flanges. These flanges are flat rectangular plates supported ...
      Subject(s) : ALLOYS , ALUMINUM , ANALYSIS , BUCKLING , COEFFICIENTS , COMPRESSION , CONSTRAINTS , CRITICAL , DIFFERENTIAL , EDGE , EDGES , ELASTIC , EQUATIONS , FLANGES , FLAT , FORMULAS , LOADING , LOADS , MATHEMATICS , PLATES , PROPERTIES , RECTANGULAR , SUPPORTS ,

    • NASA-LLIS-1597 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2005
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A Navy E-2C Hawkeye aircraft was in the NASA Dryden Flight Loads Laboratory (FLL) for a series of wing and tail loads calibration tests. A Close Call incident occurred in the FLL on December ...
      Subject(s) : Aircraft , Ground Operations , Human Factors , Lifting Devices , Mishap Reporting , Safety & Mission Assurance , Test Facility ,

    • NACA-WR-L-441 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1940
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation has been made in the NACA 7- by 10- foot wind tunnel of an NACA 23012 airfoil with a 15-percent-chord and a 25-percent-chord balanced spilt flap of the Clark Y profile. The investigation wag made to determine ...
      Subject(s) : AIRFOILS , BALANCED , CHAR , CLARK , FLAPS , GAP , MOMENTS , NACA , ORDINATES , SEALED , SPLIT , WING ,

    • NASA-LLIS-0908 

      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 NOAA-15 (K) satellite was launched on May 13 1998. The satellite was the first in the new series of Polar Operational Environmental Satellites (POES) that had design ...
      Subject(s) : Communication Systems , Configuration Management , Flight Operations , Hardware , Parts Materials & Processes , Spacecraft , Test & Verification ,

    • NACA-TN-3693 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1956
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation of the effectiveness of a wing equipped with a sliding flap and a leading-edge slat in deflecting a propeller slipstream downward for vertical take-off has been conducted in a static-thrust facility at the ...

    • NASA NPD 5101.32 REV D 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2008
      Organization : NASA - National Aeronautics and Space Administration (NASA)

    • NASA-TM-81745 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1981
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The performance of lower speed, 5 foot diameter model general aviation propellers, was tested in the Lewis wind tunnel. Performance was evaluated for various levels of airfoil technology and activity factor. The difference ...
      Subject(s) : AERODYNAMIC CONFIGURATIONS , AERONAUTICAL ENGINEERING , AIRFOILS , FUEL CONSUMPTION , POWER EFFICIENCY , PROPELLER BLADES , PROPELLER EFFICIENCY , TURBOPROP AIRCRAFT , WIND TUNNEL TESTS ,

    • NACA-TR-1048 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1951
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The observed flow field about slender inclined bodies of revolution is compared with the calculated characteristics based upon potential theory. The comparison is instructive in indicating the manner in which the effects ...
      Subject(s) : AERODYNAMIC , ANALYSIS , BODIES , CENTER , CROSS , DISTRIBUTION , DRAG , FINENESS , FLOW , FORCES , MATHEMATICS , MOMENTS , PRESSURE , RATIO , REVOLUTION , SLENDER , VISCOUS ,

    • NASA-LLIS-0407 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1996
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The composite pattern of two Helios I low-gain antenna elements caused an "interferometer effect", with rapidly varying phase and amplitude values occurring over a small but critical portion ...
      Subject(s) : Communication Systems , Flight Equipment , Spacecraft ,

    • NASA-LLIS-1357 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      In early February 2003, JPL and NASDA reported gaps in Level 0 data products received from the Wallops and Alaska ADEOS-II Data Processing Systems. Gaps in the SeaWinds ...
      Subject(s) : Administration/Organization , Ground Operations , Human Resources & Education ,

    • NACA-TN-3143 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1954
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The thermal conductivity of low-density ice has been computed from data obtained in an experimental investigation of the heat transfer and mass transfer by sublimation for an iced surface on a flat plate in a high-velocity ...
      Subject(s) : AIR FLOW , AIRCRAFT , COMPUTATION , CONDENSATION , FLAT PLATES , HEAT TRANSFER , ICE FORMATION , MASS TRANSFER , THERMAL CONDUCTIVITY , WATER VAPOR ,

    • NASA-CR-2779 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1977
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A general theory of finite state modeling of aerodynamic loads on thin airfoils and lifting surfaces performing completely arbitrary, small, time-dependent motions in an airstream is developed and presented. The nature of ...
      Subject(s) : AERODYNAMIC , AEROELASTICITY , AERONAUTICAL , AIRFOILS , ANALYSIS , APPROXIMATION , BODIES , DEVICES , ENGINEERING , LAPLACE , LIFT , LIFTING , LOADS , MATHEMATICAL , MODELS , PADE , STABILITY , STRUCTURAL , SURFACES , TRANSFORMATION ,

    • NASA-LLIS-0122 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Task leader started hoisting operation with a "slow micro" command to take up sling slack until 337 lbs was obtained. A joystick controls hoist movement which may be ...
      Subject(s) : Ground Operations , Industrial Operations , Lifting Devices , Transportation ,

    • NASA-LLIS-1121 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Aero-Space Technology/NASA\'s Three Pillars/Global Civil Aviation
      Subject(s) : Administration/Organization , Aerospace Safety Advisory Panel , Aircraft , Policy & Planning , Research & Development ,