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

Now showing items 821-840 of 3613

    • NASA-LLIS-0966 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      After the main fuel valve starts to open, three oxidizer valves in the SSME are separately subjected to a series of position commands to precisely control oxidizer system ...
      Subject(s) : Configuration Management , Cryogenic Systems , Ground Equipment , Hardware , Launch Vehicle , Parts Materials & Processes , Safety & Mission Assurance , Spacecraft , Test Article , Test Facility ,

    • NASA-STD-3001 VOLUME 2 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The scope of this Standard is restricted to human space flight missions and includes all crew activities in all phases of the life cycle (design, development, test, operations, maintenance), both inside and outside the ...

    • NASA-LLIS-0651 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Defines test methods for determining the capability of ground support equipment (GSE) and other facility hardware to function when exposed to the natural and induced environments peculiar to ...

    • NASA-LLIS-1557 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2005
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A. Reviews: General feedback received from all levels of project participants There are too many reviews without clear definition of their purpose. As a result, reviews tended to overlap in ...
      Subject(s) : AATT , Budget , Format and Content Standardization , General Feedback , Independent Review Committees , Independent Verification and Validation , Level of Detail , Policy & Planning , Program and Project Management , Project Recognition , Reporting , Reviews , Schedule , Technical Publications ,

    • NASA-LLIS-1416 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2004
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Three years after launch, higher-than-normal drag was detected on one of the Cassini reaction wheels. The likely cause was lubricant dispersal after prolonged operation of the RWA at a very ...
      Subject(s) : bearing failure , COBE RWA , excessive torque , Flight Equipment , Flight Operations , Ground Equipment , Hardware , low-RPM dwell , lubricant failure , lubricant loss , momentum wheels , Payloads , Policy & Planning , prolonged drag torque , Risk Management/Assessment , Safety & Mission Assurance , SBA , Software , Spacecraft , torque instability , tribology ,

    • NACA-RM-E54I13 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1954
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The advent of sustained supersonic flight has brought renewed interest in the high subsonic speed range as a cruising point for both subsonic and supersonic aircraft. One or the aerodynamic problems in ...

    • NASA-LLIS-5156 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A worker disconnected a hose from the vent pipe attached to a sandblast pot, the stored pressure energy in the pot caused the pipe to spin, and the worker was struck several times by the ...
      Subject(s) : Acquisition / Procurement Strategy and Planning , Communications between Different Offices and Contractor Personnel , Configuration Change Control , Contractor Relationships , Facilities , Maintenance , Pressure Vessels , Review systems and boards , Risk Management , Role of Civil Service Technical Staff versus Contractor Staff ,

    • NASA-LLIS-0404 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1996
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      When commanded to switch on, TWTA No. 1 on Viking Lander 2 failed to produce an S-band RF downlink, probably due to RF breakdown of the high-voltage power converter. High-voltage circuits ...
      Subject(s) : Ground Operations , Software , Spacecraft ,

    • NASA-LLIS-0203 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      External corrosion of tubing material caused leakage in a shuttle orbiter Reaction Control System (RCS) helium Quick Disconnect (QD). Neoprene tape was applied to the ...
      Subject(s) : Parts Materials & Processes ,

    • NASA-TN-D-5364 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1969
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Wind tunnel tests of static longitudinal and lateral characteristics of short takeoff aircraft with external flow jet flap
      Subject(s) : AERODYNAMIC , AIRCRAFT , ANGLE , ATTACK , BLOWN , COEFFICIENTS , EXTERNALLY , FLAPS , JET , LATERAL , LIFT , LONGITUDINAL , SHORT , STABILITY , STATIC , TAKEOFF , TESTS , TUNNEL , WIND ,

    • NACA-TN-775 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1940
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      As a part of a general investigation directed toward developing a rational system of tail design, a study has been made of available wind-tunnel data on directional stability and control. The main emphasis ...

    • NASA-LLIS-1226 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1998
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Qualification test failures of RM2679 transformers were discovered after vibration screening. Posttest analysis of the failed transformers revealed there were gaps between ...
      Subject(s) : Flight Equipment , Ground Equipment , Hardware , Human Resources & Education , Industrial Operations , Parts Materials & Processes , Safety & Mission Assurance , Test & Verification ,

    • NASA-STD-3001 VOLUME 1 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2007
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Purpose
      NASA policy for establishing standards to protect the health and safety of crew, and for providing health and medical programs for crewmembers during all phases of space flight, is authorized ...

    • NASA-LLIS-0713 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Use master gauges, tooling, jigs, and fixtures to transfer precise dimensions to ensure accurate mating of interfacing aerospace hardware. Calculate overall worst-case tolerances using the ...

    • NASA-TN-D-3801 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1967
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Statistical analysis of landing contact conditions and slideout distances of X-15 research airplane.
      Subject(s) : AIRCRAFT LANDING , DISTANCE , HISTOGRAMS , STATISTICAL ANALYSIS , TOUCHDOWN , X-15 AIRCRAFT ,

    • NASA-LLIS-2476 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2010
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      When flight scripts developed independently by project personnel are not placed under configuration control early enough in flight software development, multiple versions of the scripts tend ...
      Subject(s) : Additional Categories.Computers , Additional Categories.Configuration Management , Additional Categories.Flight Operations , Additional Categories.Software , Additional Categories.Spacecraft , Additional Categories.Standard , Additional Categories.Test & Verification , Engineering Design (Phase C/D).Software Engineering , Integration and Testing , Mission Operations and Ground Support Systems.Mission operations systems , Missions and Systems Requirements Definition.Configuration control and data management , Program Management.Configuration and data management , Program Management.Contractor relationships , Safety and Mission Assurance.Configuration Change Control , Systems Engineering and Analysis.Engineering design and project processes and standards ,

    • NASA-STD-6012 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Purpose
      The purpose of this Standard is to describe the general corrosion protection requirements applicable to the surface treatment and finishing of space flight hardware. This Standard contains the ...

    • NACA-ARR 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1942
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The Shear webs employed in aircraft structures are frequently perforated with regularly spaced holes to lighten the web or to provide access to the interior of the structure. Round holes ...
      Subject(s) : ALUMINUM ALLOYS-ALCOA 24ST-STRENGTH , EFFECT OF HOLES , JIGS , MONOCOQUE CONSTRUCTION , STRESSED SKIN , STRESSED SKIN-SHEETS , BEADED , TESTING , WORK CARRIED ON AT LAL ,

    • NASA-LLIS-0066 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A liquid helium dewar used to service payload experiments ruptured and damaged ceiling tiles and a copy machine. In order to service the payload experiments, the dewar ...
      Subject(s) : Cryogenic Systems , Packaging Handling Storage ,

    • NASA-LLIS-0997 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1997
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Safety Impact of Downsizing.
      Subject(s) : Administration/Organization , Aerospace Safety Advisory Panel , Ground Operations , Human Resources & Education ,