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

Now showing items 2561-2580 of 3613

    • NASA-LLIS-1831 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2004
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      At the Orbiter Space Plane (OSP) System Design Review there was a lack of evidence that Human Factors contributions were being made to all applicable areas within the System, in particular, ...
      Subject(s) : Engineering Design (Phase C/D).Human Factors/Habitability , Mission Operations and Ground Support Systems.Ground support systems , Missions and Systems Requirements Definition.Human factors impact on mission design ,

    • NASA-TN-D-1586 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1964
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Aerodynamics of tilt-wing propeller driven v/stol configuration
      Subject(s) : AERODYNAMIC , AERODYNAMICS , AIRCRAFT , ATTITUDE , CHARACTERISTICS , DRIVE , FLAPPING , INCLINATION , PROPELLER , PROPELLERS , ROTATION , STOL , TILT , WING , WINGS ,

    • NACA-TN-3038 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1953
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation has been conducted to find the approximate variation of the drag coefficient with Reynolds number of several cylinders having different cross-sectional shapes. Data were obtained for circular cylinders, ...
      Subject(s) : AERODYNAMIC , BODIES , CROSS , FLOW , LOADS , SECTION , VISCOUS ,

    • NASA-LLIS-0409 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1996
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Because the Voyager 2 failure protection logic was unnecessarily enabled during launch, transient gyro outputs triggered a series of alarming "gyro swaps." Careful attention should be given ...
      Subject(s) : Flight Equipment , Spacecraft ,

    • NASA-LLIS-0282 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      One Voyager Solid State Amplifier (SSA) failed to operate upon application of input power during spacecraft system test. Post-test analysis determined that a relay hangup had occurred following ...
      Subject(s) : Energy , Spacecraft ,

    • NASA-TN-D-3781 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1966
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Aft-fuselage-mounted nacelles effect on subsonic longitudnal aerodynamic characteristics of twin turbojet aircraft
      Subject(s) : AERODYNAMIC , AIRCRAFT , CHARACTERISTICS , FUSELAGES , JET , NACELLE , NACELLES , NUMBER , REYNOLDS , SPEED , SUBSONIC , TURBOJET ,

    • NASA-LLIS-1313 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      In addition to "normal" tight budgets, schedules and technical requirements, the Project had several constraints and conditions that posed additional challenges including: ...
      Subject(s) : Administration/Organization , Policy & Planning , Risk Management/Assessment ,

    • NACA-RM-L56C21 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1956
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation of the effects of jet nozzle geometry, size of base annulus, and base bleed upon the base and afterbody pressures of a cylindrical afterbody at transonic speeds has been conducted. Sonic and supersonic ...
      Subject(s) : AERODYNAMIC , AFTERBODIES , AIRCRAFT , BASE , BLAST , BODIES , CHARACTERISTICS , CONVERGENT , CYLINDRICAL , EFFECTS , FLOW , GEOMETRY , JET , NOZZLE , NOZZLES , PRESSURE , SONIC , SPEED , SUPERSONIC , TRANSONIC ,

    • NASA-LLIS-2257 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2009
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The February 2009 OCO mission failed to attain orbit aboard a Taurus launch vehicle, and the OCO satellite payload was lost. A mishap investigation board identified four potential causes that ...
      Subject(s) : Additional Categories. , Additional Categories.Accident Investigation , Additional Categories.Energetic Materials - Explosive/Propellant/Pyrotechnic , Additional Categories.Flight Equipment , Additional Categories.Flight Operations , Additional Categories.Hardware , Additional Categories.Launch Vehicle , Additional Categories.Payloads , Additional Categories.Spacecraft , Engineering Design (Phase C/D). , Engineering Design (Phase C/D).Launch Systems , Engineering Design (Phase C/D).Power , Engineering Design (Phase C/D).Spacecraft and Spacecraft Instruments , Manufacturing and Assembly , Program Management. , Program Management.Acquisition / procurement strategy and planning , Safety and Mission Assurance. , Safety and Mission Assurance.Product Assurance , Safety and Mission Assurance.Quality ,

    • NASA-LLIS-0843 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Enhancement maintainability through the use of digital potentiometers to provide accurate and reliable remote control of electronic hardware.

    • NACA-RM-L8E24 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1948
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Full-scale tests have been made in the Langley 16-foot high-speed tunnel t o determine the aerodynamic characteristics of the NACA 10-(3) (08)-03R propeller. The tests on this propeller were conducted as part of a program ...

    • NASA-LLIS-0376 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The Galileo spacecraft sustained water damage when its environmentally controlled shipping container was left open at the launch facility, allowing humid air to enter throughout a holiday ...
      Subject(s) : Environment , Environmental Control , Packaging Handling Storage , Transportation ,

    • NASA-LLIS-2044 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2009
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      An articulating solar array collided with the MRO spacecraft due to inadequate definition and verification/validation of system-level design requirements for implementing the appendage's ...
      Subject(s) : Configuration Change Control , Early requirements and standards definition , Engineering design and project processes and standards , Flight Operations , Ground support systems , Level II/III requirements definition , Mission operations systems , Orbiting Vehicles , Planetary Operations , Planning of requirements verification processes , Robotics , Software , Software Engineering , Spacecraft , Spacecraft and Spacecraft Instruments , Test & Verification ,

    • NASA-LLIS-1101 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Several items of EVA hardware were lost during the EVAs on STS-88. Impact to immediate mission is loss of availability of needed tools. Lost tooling, when unretrieved, ...
      Subject(s) : Extra-Vehicular Activity , Flight Equipment , Hardware , Human Factors , Policy & Planning , Risk Management/Assessment , Safety & Mission Assurance , Spacecraft , Training Equipment ,

    • NASA-02865S 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2005
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: NOTE:
      This section covers steel fencing, including posts, fabric, gates, barbed wire, and miscellaneous accessories. Colored fabric and accessories may be used if required. Specifications must be revised to suit.

    • NACA-RM-A9D05 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1949
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      A systematic investigation of the control-surface characteristics, particularly the hinge-moment parameters, of horizontal-tail surfaces has been undertaken by the NACA to provide design data and experimental ...

    • NASA-LLIS-1772 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2006
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      When software measurement data used to support cost estimates is provided to NASA by a project without an understanding of how NASA will apply the data, discrepancies may produce erroneous ...
      Subject(s) : Additional Categories. , Additional Categories.Financial Management , Additional Categories.Flight Operations , Additional Categories.Ground Operations , Additional Categories.Program and Project Management , Additional Categories.Software , Engineering Design (Phase C/D). , Engineering Design (Phase C/D).Software Engineering , Mission Operations and Ground Support Systems. , Mission Operations and Ground Support Systems.Mission operations systems , Missions and Systems Requirements Definition. , Missions and Systems Requirements Definition.Configuration control and data management , Missions and Systems Requirements Definition.Requirements critical to costing and cost credibility , Program Management. , Program Management.Business processes , Program Management.Communications between different offices and contractor personnel , Program Management.Cross Agency coordination , Program Management.Program planning , development , and management , Systems Engineering and Analysis. , Systems Engineering and Analysis.Systems analysis - cost analysis ,

    • NASA-TP-1919 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1981
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Wind-tunnel tests were conducted in the Langley low-turbulence pressure tunnel to evaluate the effects on performance of modifying a 17-percent-thick low-speed airfoil. The airfoil contour was altered to reduce the ...
      Subject(s) : AERODYNAMIC , AIRCRAFT , AIRFOIL , AVIATION , COEFFICIENTS , DRAG , FLOW , GENERAL , GRADIENTS , LIFT , LOW , NUMBER , PRESSURE , PROFILES , RATIO , REYNOLDS , SENSORS , SPEED , STABILITY , TESTS , TUNNEL , TURBULENT , WIND ,

    • NASA-LLIS-1497 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The Orbital Space Plane (OSP) lacked development and planning documents. These documents may have aided the program in proceeding to the next level.
      Subject(s) : Policy & Planning , Program and Project Management ,

    • NASA NPD 1400.2 REV E W/CHG 1 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: APPLICABILITY
      a. This NPD is applicable to NASA Headquarters and NASA Centers, including Component Facilities and Technical and Service Support Centers.
      b. In this NPD, all mandatory actions (i.e., ...