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

Now showing items 3481-3500 of 3613

    • NASA-LLIS-1829 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2008
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      As part of the Exploration Systems Mission Directorates (HQ Code T)Lessons Learned Project, Ames Research Center has compiled the results of ongoing Lessons Learned interviews and a Lessons ...

    • NASA-TN-D-1394 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1962
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Pressure data and aerodynamics of trapezoidal and delta wings
      Subject(s) : AERODYNAMIC , AERODYNAMICS , CHARACTERISTICS , DELTA , MACH , NUMBER , PROPERTIES , SURFACE , SWEPTBACK , TESTS , TRAPEZOIDAL , TUNNEL , WIND , WING , WINGS ,

    • NACA-TN-3007 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1953
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A two-dimensional wind-tunnel investigation at low speeds was made of the NACA 64A010 airfoil equipped with various combinations of a leading-edge slat, leading-edge flap, split flap, and double-slotted flap. Optimum slat ...

    • NASA-LLIS-0486 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1996
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      During lot acceptance test of ten Mars Observer pyro valves, none failed. Yet, post-test examination showed that each of these valves had sustained erosion (burning) of about 50 percent of ...
      Subject(s) : Energetic Materials - Explosive/Propellant/Pyrotechnic , Flight Equipment , Hardware , Spacecraft , Test & Verification ,

    • NASA-CR-114760 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1973
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Formulas relating overall sound pressure level (OASPL) to parameters such as horsepower required, tip speed, and thrust for main and tail rotors are presented for standard and quieted helicopters. Formulas relating OASPL ...
      Subject(s) : ACOUSTIC MEASUREMENT , ACOUSTIC PROPERTIES , AERODYNAMIC CONFIGURATIONS , AERODYNAMIC NOISE , HELICOPTER PERFORMANCE , NOISE INTENSITY , NOISE PROPAGATION , OH-6 HELICOPTER , ROTOR AERODYNAMICS ,

    • NASA-LLIS-0471 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A number of H2O2 motor valves in the H2O2 fuel system of the Scout Missile experienced leakage due to contamination of the valve's teflon seats. Failed parts analysis ...
      Subject(s) : Hardware , Parts Materials & Processes ,

    • NASA-LLIS-0280 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The high resistivity of nickel ribbon used for electrical interconnections within power modules caused excessive voltage drops at subsystem power interfaces.
      Voltage drop analyses should ...
      Subject(s) : Flight Equipment , Hardware , Test & Verification ,

    • NASA-TN-D-3591 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1966
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Force tests to determine static and dynamic longitudinal stability derivatives of powered scale model of tilt-wing V/STOL transport aircraft
      Subject(s) : AIRCRAFT , DERIVATIVES , DYNAMIC , LONGITUDINAL , MODELS , POWERED , SCALE , STABILITY , STATIC , STOL , TILT , TRANSPORT , WING ,

    • NASA-LLIS-1311 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Since none of the dedicated Project personnel had received formal Risk Management training or developed a RM plan (the Project's beginnings predated the Continuous Risk ...
      Subject(s) : Administration/Organization , Policy & Planning , Risk Management/Assessment , Safety & Mission Assurance ,

    • NACA-RM-L55L21 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1956
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      With the penetration of modern high-speed airplanes into supersonic flight regime, considerable interest is being directed toward the effects that propulsive jets have on external drag of nacelles and ...

    • NACA-RM-E52H15 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1952
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The flammability limits of 18 high-boiling hydrocarbons at reduced pressures were studied in a closed flame tube with hot-wire ignition. Characteristic two-lobe flammability-limit curves were exhibited by all the hydrocarbons ...

    • NASA-LLIS-2216 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2009
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Contractors arrived at the Phoenix Navigation Mission Support Area during a mission-critical Mars Phoenix project event, and they continued to perform disruptive repairs to a badge reader ...
      Subject(s) : Configuration Change Control , Facilities , Flight Operations , Ground support systems , Logistics and maintenance , Maintenance ,

    • NASA-LLIS-0258 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      While mounting a tray inside an instrument rack, the bottom lip of the tray made contact with the prongs of an electrical plug located below the tray. This contact caused ...
      Subject(s) : Energy ,

    • NASA-TN-D-8373 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1976
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation was made in the Langley V/STOL tunnel to determine, by the trailing wing sensor technique, the effectiveness of various segments of the existing flight spoilers on an extended-range wide-body tri-jet ...
      Subject(s) : AERODYNAMIC , AIRCRAFT , CONFIGURATIONS , EDGES , FLIGHT , HAZARDS , LOW , MODELS , MOMENTS , ROLLING , SPEED , SPOILERS , TESTS , TRAILING , TUNNEL , TUNNELS , VORTICES , WIND ,

    • NASA-LLIS-0372 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A JPL built balloon gondola free-fell from an altitude of 102,000 feet, destroying the payload. The gondola attachment fixture was designed to the requirements of the National Scientific ...
      Subject(s) : Flight Equipment , Safety & Mission Assurance ,

    • NASA-LLIS-2042 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2009
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      NASA has been criticized for failing to systematically make use of information in the NASA Lesson Learned Information System. Mars Exploration Rover, Kepler, and Juno are examples of major ...
      Subject(s) : 1.Accident Investigation , 1.Business processes , 1.Early requirements and standards definition , 1.Engineering design and project processes and standards , 1.Human Resources & Education , 1.Mishap Reporting , 1.NASA Standards , 1.Product Assurance , 1.Program level review processes , 1.Program planning development and management , 1.Risk management , 1.Risk Management/Assessment , 1.Safety & Mission Assurance ,

    • NASA-LLIS-1099 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Space Vision System (SVS) targets have become an undue burden during EVA. The requirement to restrain cables away from SVS targets added 45 minutes to 1 hour EVA time and ...
      Subject(s) : Administration/Organization , Configuration Management , Extra-Vehicular Activity , Flight Equipment , Flight Operations , Ground Equipment , Ground Operations , Hardware , Independent Verification and Validation , Payloads , Policy & Planning , Range Operations , Risk Management/Assessment , Safety & Mission Assurance , Test & Verification ,

    • NASA-LLIS-4436 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The Radioisotope Power Systems (RPS) Program Office recently completed a System Requirements Review (SRR), System Definition Review (SDR) (per NPR 7123.1) and an Independent Life Cycle Review ...
      Subject(s) : Mission definition and planning , Program level review processes , Program Management , Review boards , Review systems ,

    • NACA-RM-A9B17 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1949
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Although low-aspect-ratio wings of triangular plan form are primarily intended for use at supersonic speeds, the designer of an airplane employing this wing design is also concerned with their low-speed ...

    • NASA-LLIS-0702 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Design flight subsystems with low residual dipole magnetic fields to maintain the spacecraft's total static and dynamic magnetic fields within science requirements.