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

Now showing items 2461-2480 of 3613

    • NASA-LLIS-0373 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A bad weld in the cathode support structure of a Traveling Wave Tube Amplifier was postulated as the failure mode for degradation of the Mariner '71 downlink signal level.
      Adequately ...
      Subject(s) : Flight Operations , Safety & Mission Assurance ,

    • NASA-TN-D-6440 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1971
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Dynamic stability of jet transport configuration with high thrust-weight ratio and externally blown jet flap
      Subject(s) : AERODYNAMIC , AIRCRAFT , ANGLE , ATTACK , CONFIGURATIONS , ENGINES , FLAPS , JET , MODELS , RATIO , STABILITY , THRUST , TRANSPORT , TURBOFAN , WEIGHT ,

    • NASA-LLIS-0216 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Before starting up vacuum pumps to lower the pressure in an altitude tank, the reservoirs of the pumps were checked for proper oil level. The levels were found to be low ...
      Subject(s) : Hardware , Logistics , Test Facility ,

    • NACA-TN-1046 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1946
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Much interest has been shown in the possibility of using wings with large amounts of sweepback for high-speed missiles and aircraft. Analyses presented in references 1 and 2 show that the lift on a swept-back ...

    • NASA-LLIS-1240 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      International Space Station Command & Control Computer crashes due to common cause failure mode.
      Subject(s) : Aerospace Safety Advisory Panel , Computers , Configuration Management , Flight Operations , Research & Development , Software ,

    • NASA-STD-6016 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2008
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This document is directed toward materials and processes (M&P) used in the design, fabrication, and testing of flight components for all NASA manned, unmanned, robotic, launch vehicle, lander, in-space and surface systems, ...

    • NACA-RM-L50F16 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1950
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The use of sweep t o delay the effects of compressibility on the aerodynamic characteristics of airplane wings has given rise to a need for h t a on swept wings at both low and high speeds to aid designers ...

    • NASA-LLIS-2376 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1990
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The Cosmic Background Explorer (COBE) successfully launched on November 18, 1989, following a postponement due the the Challenger Shuttle Accident. The spacecraft enabled NASA scientist Dr. ...
      Subject(s) : Additional Categories.Communication Systems , Additional Categories.Cryogenic Systems , Additional Categories.Emergency Preparedness , Additional Categories.Environment , Additional Categories.Extra-Vehicular Activity , Additional Categories.Flight Equipment , Additional Categories.Flight Operations , Additional Categories.Ground Operations , Additional Categories.Human Factors , Additional Categories.Independent Verification and Validation , Additional Categories.Launch Vehicle , Additional Categories.Payloads , Additional Categories.Program and Project Management , Additional Categories.Spacecraft , Additional Categories.Transportation ,

    • NASA-TN-D-5390 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1969
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Stress ratio effects on fatigue crack growth in sheet aluminum alloys.
      Subject(s) : ALUMINUM ALLOYS , AXIAL LOADS , CRACK PROPAGATION , FATIGUE TESTS , GRAPHS (CHARTS) , MATHEMATICAL MODELS , METAL SHEETS , STRAIN GAGES , STRESS DISTRIBUTION , STRESS RATIO , TENSILE PROPERTIES ,

    • NACA-TN-684 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1939
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The deformation of two sheet-stringer panels subjected to end compression under carefully controlled end conditions was measured at a number of points and at a number of loads, most of which were above the load at which ...
      Subject(s) : FORMULAS - BUCKLING - KARMAN , FORMULAS - STRESSED SKIN - COX , FORMULAS - STRESSED SKIN - SECHLER , INSTR - STRAIN GAUGES - TUCKERMAN , LOADS - WING PANELS , THEORIES - BUCKLING - FRANKLAND , THEORIES - BUCKLING - MARGUERRE , THEORIES - BUCKLING - SOUTHWELL , THEORIES - BUCKLING - TIMOSHENKO ,

    • NASA-LLIS-0079 

      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 preparation for LH2 flow test at the LETF, a section of line was inadvertently overpressurized, resulting in a protective cap being blown approximately 350 feet ...
      Subject(s) : Ground Equipment , Hardware , Pressure Vessels , Safety & Mission Assurance ,

    • NASA-LLIS-1010 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1997
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Lower than Anticipated Fracture Toughness of the 2195 Aluminum-Lithium Alloy Used in the SLWT at Cryogenic Temperatures Causing Changes to Test & Verification Procedures.
      Subject(s) : Aerospace Safety Advisory Panel , Cryogenic Systems , Energetic Materials - Explosive/Propellant/Pyrotechnic , Hardware , Parts Materials & Processes , Policy & Planning , Risk Management/Assessment , Spacecraft , Standard , Test & Verification ,

    • NASA NPD 2540.1 REV G 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2010
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: APPLICABILITY
      This NPD applies to employee and contractor personal use of Government office equipment and IT, whether owned or otherwise provided by NASA Headquarters and NASA Centers, including Component ...

    • NASA NPD 7500.2 REV B 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2009
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This NASA Policy Directive establishes policy for the Innovative Partnerships Program (IPP). The IPP provides needed technology and capabilities for NASA's Mission Directorates' programs and projects through investments ...

    • NACA-TN-2744 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1952
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Calculation of second-order supersonic flow past bodies of revolution at zero angle of attack is described in detail, and reduced to routine computation. Use of an approximate tang-ency condition is shown to increase the ...
      Subject(s) : ANALYSIS , ANGLE , ATTACK , BODIES , CHARACTERISTICS , COMPARISON , CORNERS , DATA , DISTRIBUTION , FLOW , FUNCTIONS , MATHEMATICS , METHOD , PREDICTION , PRESSURE , REVOLUTION , SUPERSONIC , TABLES , TECHNIQUES ,

    • NASA-LLIS-1392 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Systemic management and technical failures led to the catastrophic rupture of a test system. 3 lessons are published regarding this specific incident; this lesson addresses unique considerations ...
      Subject(s) : Administration/Organization , Configuration Management , Emergency Preparedness , Energetic Materials - Explosive//Propellant/Pyrotechnic , Energy , Facilities , Ground Equipment , Ground Operations , Hardware , Human Factors , Industrial Operations , Personal Protective Equipment , Policy & Planning , Pressure Vessels , Program and Project Management , Risk Management/Assessment , Safety & Mission Assurance , Test Facility ,

    • NASA-LLIS-0638 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1996
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      On July 31, 1996, at 13:15 MDT, NASA successfully launched and flew the Clipper Graham, DC-XA, vehicle for the fourth time. Following an uneventful takeoff, the Clipper ...
      Subject(s) : Aircraft , Emergency Preparedness , Flight Equipment , Flight Operations , Ground Operations , Hardware , Hazardous/Toxic Waste/Materials , Launch Process , Logistics , Mishap Reporting , Spacecraft , Test & Verification , Test Article , Transportation ,

    • NASA NPD 2570.5 REV E 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: APPLICABILITY

      This NPD is applicable to NASA Headquarters and NASA Centers, including Component Facilities and Technical and Service Support Centers. This language applies to JPL, ...

    • NASA-LLIS-1401 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A detailed WBS is critical to the initial formulation and planning of a Program/project. The absence of a WBS or one without sufficient detail will hinder the successful implementation of the ...
      Subject(s) : Program and Project Management , Risk Management/Assessment ,

    • NASA-LLIS-0869 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A mishap occurred with the Propeller Test Rig (PTR) in the 40\'x80\' Wind Tunnel at an airspeed of about 200 knots. The model was a 25\' diameter, three bladed prop rotor, ...
      Subject(s) : Administration/Organization , Aircraft , Ground Equipment , Hardware , Research & Development , Test Facility ,