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

Now showing items 2061-2080 of 3613

    • NASA-TM-X-71903 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1976
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An analysis of the oscillatory fluid flow in the vicinity of a circular orifice with a steady grazing flow is presented. The study is similar to that of Hersh and Rogers but with the addition of the grazing flow. Starting ...
      Subject(s) : ACOUSTIC , CONTINUITY , DIFFERENTIAL , EQUATION , EQUATIONS , FLOW , FLUID , GRAZING , IMPEDANCE , ORIFICES , OSCILLATING , PARTIAL , STEADY , VELOCITY ,

    • NASA-LLIS-0896 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Construction operations aimed at improving accommodations or improving the capabilities of a mission critical support facility are required periodically. An extensive ...
      Subject(s) : Configuration Management , Facilities , Flight Operations , Ground Equipment , Ground Operations , Safety & Mission Assurance , Test Facility ,

    • NACA-TN-3527 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1956
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A second-order shock-expansion method applicable to bodies of revolution near zero lift is developed. Expressions defining the pressures on noninclined bodies are derived by the use of characteristics theory in combination ...

    • NASA-LLIS-2456 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2010
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A shipping container holding test equipment for the Aquarius project fell off the lift gate while it was being unloaded from a truck, and caused minor injuries to personnel. The root cause was inadequate planning and ...

    • NASA-SP-288 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1973
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The vibrational characteristics and mechanical properties of shell structures are discussed. The subjects presented are: (1) fundamental equations of thin shell theory, (2) characteristics of thin circular cylindrical ...
      Subject(s) : BODIES OF REVOLUTION , CYLINDRICAL SHELLS , EQUATIONS OF MOTION , MECHANICAL PROPERTIES , NUMERICAL ANALYSIS , SPHERICAL SHELLS , STRESS ANALYSIS , STRUCTURAL STABILITY , THIN WALLED SHELLS , VIBRATION EFFECTS ,

    • NASA-LLIS-1896 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2008
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Independent Product Teams with government, Air Force, contractor and subcontractor members provided a highly structured environment for teamwork to manage a huge contract allowing members to ...
      Subject(s) : Additional Categories.Ground Operations , Mission Operations and Ground Support Systems.Ground processing and manifesting ,

    • NASA-LLIS-4022 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Spare parts for new systems should be procured and stocked prior to handing-over the system for contract maintenance. This did not occur for the elevators in the new Operations Support Building (OSB) II building at the ...
      Subject(s) : Acquisition / procurement strategy and planning , Engineering design and project processes and standards , Facilities , Ground support systems , Logistics , Logistics and maintenance , Parts , Materials , & Processes ,

    • NASA-LLIS-4897 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: CxP 70064 (Constellation Program: Supportability Plan) was written as a guidance document only. No suggestions for products or product formats were included. This resulted in logistics data provided by the various projects ...

    • NASA-LLIS-0514 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The measurement of pressure fluctuations in hypersonic flow fields is much more demanding on dynamic pressure sensors than in traditional acoustical applications. Essential ...
      Subject(s) : Research & Development ,

    • NASA NPR 3319.1 REV A 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2007
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Purpose
      This NPR establishes the lines of authority, distribution of responsibilities, and principal statements of policy governing management of Senior Scientific and Professional (ST) and Senior-Level ...

    • NASA-LLIS-1343 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The Project was required to develop and deliver a major scientific instrument for a project and had used both research grants and contracts to acquire services/products ...
      Subject(s) : Administration/Organization , Procurement Small Business & Industrial Relations ,

    • NACA-TN-1951 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1949
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The characteristics of a turbine and a propeller were investigated to determine the conditions of maximum-efficiency operation when utilized as an independent turbine-propeller combination. The procedure used to determine ...

    • NASA-GB-A201 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1989
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Purpose of this Guidebook
      The purpose of this Software Assurance Guidebook is to provide assistance, in the form of guidance, to NASA managers responsible for software acquisition and development and for establishing ...

    • NASA-LLIS-4582 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Configuration Data Management (CDM) requirements should be specified by a Program to allow for proper configuration auditing and verification/validation planning by Projects. Configuration Audit and Verification Requirements ...

    • NASA-LLIS-0365 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The system and end-to-end testing programs for the SEASAT synthetic aperture radar were impacted by schedule and cost constraints that contributed to failure to meet the primary mission ...
      Subject(s) : Cost vs. Risk Tradeoff , Prototype System Development , Risk Management/Assessment , Test & Verification ,

    • NASA-LLIS-0974 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      In the 1995-1996 timeframe the Office of Safety and Mission Assurance (OSMA) began development of a distance learning capability under the umbrella of the Professional ...
      Subject(s) : Policy & Planning , Training Equipment ,

    • NASA-LLIS-3257 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2010
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Classically, Failure Modes and Effects Analysis (FMEA) and System Assurance Analysis (SAA) have omitted passive elements of the design. These elements must be included to have a complete and ...
      Subject(s) : Additional Categories.External Relations , Engineering Design (Phase C/D).Launch Systems , Mission Operations and Ground Support Systems.Ground support systems , Mission Operations and Ground Support Systems.Launch support systems , Mission Operations and Ground Support Systems.Mission operations systems , Program Management.Risk management , Safety and Mission Assurance.Maintenance , Safety and Mission Assurance.Reliability , standards , Systems Engineering and Analysis.Engineering design and project processes and ,

    • NASA-LLIS-0112 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The LH2 vent system valves are located in the flare stack area of Pads A and B. The valve control handles are elevated between 8 and 10 feet above ground. Operational ...
      Subject(s) : Ground Equipment , Human Factors , Launch Process , Safety & Mission Assurance ,

    • NASA-LLIS-0924 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Although the phenomenon of tin whisker formation is well known, spacecraft are still suffering failures from them. When tin plating is used on mechanical, electrical or electromechanical ...
      Subject(s) : Hardware , Parts Materials & Processes , Payloads , Safety & Mission Assurance , Spacecraft ,

    • NASA-LLIS-0732 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Apply an Electrostatic Discharge (ESD) Control Program to all spaceflight projects to ensure that ESD susceptible hardware is protected from damage due to ESD.