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

Now showing items 1721-1740 of 3613

    • NACA-TN-2114 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1950
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The analysis is limited to wings of vanishingly small thickness that have zero camber. The results are valid only for a range of supersonic speeds in which the components of the free-stream velocity normal to the leading ...
      Subject(s) : AIR , AIRFOILS , DAMPING , DISTRIBUTION , FLOW , LIFT , LINEAR , MOMENTS , PRESSURE , REVERSED , ROLL , ROLLING , STABILITY , SUPERSONIC , SWEPTBACK , SWEPTFORWRAD , TAPERED , THEORIES , THIN , WINGS ,

    • NASA-LLIS-1387 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Scaffolding for payload access is built in support of the mission instead of the task, which can often result in awkward postures and excessive reaches.
      Subject(s) : Facilities , Ground Operations , Human Factors , Launch Process , Payloads , Safety & Mission Assurance , Test & Verification , Test Facility ,

    • NACA-TR-D-894 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1948
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A method used by Tsien to derive similarity rules for hypersonic flows is utilized to derive Von Karman's similarity rules for transonic flows. At the lower limit of the transonic region of flow the theory yields a formula ...
      Subject(s) : ANALYSIS (MATHEMATICS) , CRITICAL FLOW , MACH NUMBER , SIMILITUDE LAW , SYMMETRICAL BODIES , THIN BODIES , TRANSONIC FLOW , TWO DIMENSIONAL FLOW ,

    • NASA-TM-81912 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1980
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The low speed aerodynamic characteristics of a 14 percent thick supercritical airfoil are documented. The wind tunnel test was conducted in the Low Turbulence Pressure Tunnel. The effects of varying chord Reynolds number ...
      Subject(s) : AERODYNAMIC , ANGLE , ATTACK , CHARACTERISTICS , COEFFICIENTS , EDGES , LEADING , LIFT , MACH , NUMBER , REYNOLDS , SUPERCRITICAL , TESTS , TUNNEL , WIND , WINGS ,

    • NASA-LLIS-0138 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      During bleed down of the 125 psi air system, a process which lasts less than one minute, the noise level at the Pad B gaseous oxygen (GOX) vent arm air receiver outlet ...
      Subject(s) : Facilities , Risk Management/Assessment ,

    • NASA-LLIS-3757 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The Shuttle Connector Analysis Network (SCAN) system developed by the Space Shuttle Processing organization consisted of a user interface software and database system ...
      Subject(s) : Configuration Change Control , Configuration control and data management , Configuration Management , Ground Operations , Planning of requirements verification processes ,

    • NASA-LLIS-1156 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Inadequate NASA Oversight of Contractor-Provided Flight Operations.
      Subject(s) : Administration/Organization , Aerospace Safety Advisory Panel , Policy & Planning , Safety & Mission Assurance ,

    • NASA-LLIS-0773 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Minimize the adverse effects of electrostatic discharge (ESD) on spacecraft by implementing the following three design practices:
      1. Make all external surfaces of the spacecraft electrically ...

    • NASA-LLIS-1604 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The F-18 High Alpha Research Vehicle has proven to be a useful research tool with many unique capabilities. Many of these capabilities are to assist in characterizing flight at high angles ...
      Subject(s) : Aircraft , Flight Operations , Ground Operations , Policy & Planning , Program and Project Management , Test & Verification ,

    • NACA-TR-791 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1944
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The relation between the elevator hinge-moment parameters and the control-forces for changes in forward speed and in maneuvers is shown for several values of static stability and elevator mass balance.

    • NASA-LLIS-0915 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Hydrazine fuel in pressurized tanks is used for satellite stationkeeping. Fuel consumption log indicated sufficient fuel to extend mission beyond date originally planned. ...
      Subject(s) : Configuration Management , Energetic Materials - Explosive/Propellant/Pyrotechnic , Flight Operations , Parts , Materials & Processes , Spacecraft ,

    • NACA-TN-3754 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1956
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A simple method for calculating the characteristics of the Dutch roll motion of an airplane is obtained by arranging the lateral equations of motion in such form and order that an iterative process is quickly convergent.

    • NASA-TM-88361 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1987
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An experimental study was conducted to examine the interaction between a single weak streamwise vortex and a two-dimensional turbulent boundary layer. Attention was focused on characterizing the effect of the boundary layer ...
      Subject(s) : DELTA WINGS , FLOW VELOCITY , PRESSURE GRADIENTS , REYNOLDS STRESS , SHEAR STRESS , SKIN FRICTION , THREE DIMENSIONAL FLOW , TURBULENT BOUNDARY LAYER , VORTEX BREAKDOWN , VORTEX GENERATORS , VORTICITY , WIND TUNNEL TESTS ,

    • NACA-TR-1086 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1952
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An analysis of the effects of wing interference on the tail contributions to the rolling stability derivatives of complete airplane configurations is made by calculating the angularity of the air stream at the vertical ...
      Subject(s) : AERODYNAMIC , AERODYNAMICS , AIRCRAFT , ASSEMBLIES , BACKWASH , COMPUTATIONAL , DERIVATIVES , DYNAMIC , DYNAMICS , FLUID , FORCES , INTERACTIONAL , INTERFERENCE , LATERAL , MOMENTS , OSCILLATION , ROLL , STABILITY , STABILIZERS , TAIL , WINGS ,

    • NASA-LLIS-0550 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1997
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Two technicians were transferring liquid nitrogen from a vendor tanker to a tank trailer. Near the end of the operation, visibility was severely limited due to fog caused ...
      Subject(s) : Cryogenic Systems , Facilities , Hazardous/Toxic Waste/Materials , Occupational Health , Safety & Mission Assurance ,

    • NASA-LLIS-1364 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Overhead work requires special precautions and safe behavior practices to ensure that equipment does not fall on personnel and equipment underneath.
      Subject(s) : Configuration Management , Facilities , Ground Equipment , Ground Operations , Human Factors , Industrial Operations , Lifting Devices , Personal Protective Equipment , Safety & Mission Assurance ,

    • NACA-TN-3547 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1955
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation has been made to determine the effects of airspeed and angle of attack on the lift, drag, and pitching moment of a shrouded-propeller model, having a shroud length of about two-thirds the propeller diameter, ...

    • NASA-CR-3664 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1983
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A set of empirical methods was developed to predict low-speed lift, drag and pitching-moment variations with angle of attack for a class of low aspect ratio irregular planform wings suitable for application to advanced ...
      Subject(s) : AERODYNAMICS , ANGLE , ATTACK , BASES , COMPUTERS , CORRELATION , DATA , DIGITAL , DRAG , LIFT , MOMENTS , PITCHING , PLANFORMS , TESTS , TUNNEL , WIND ,

    • NASA-LLIS-0126 

      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 Pad B ECS chillers condition air for the orbiter and payload changeout room. The ECS chiller GN2 control system, which regulates the amount of cooling provided by ...
      Subject(s) : Hardware ,

    • NASA NPD 8500.1 REV B 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2007
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: APPLICABILITY
      This NPD applies to NASA Headquarters and Centers, including Component Facilities, and to the Jet Propulsion Laboratory to the extent specified in its contract.