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

Now showing items 1561-1580 of 3613

    • NASA-LLIS-0026 

      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 launch operations area fuel cell servicing system (FCSS) LH2/GH2 system provides for the loading of LH2/GH2 to the orbiter at pads A and B. The LH2 FCSS low pressure ...
      Subject(s) : Energetic Materials - Explosive/Propellant/Pyrotechnic , Facilities , Ground Equipment , Ground Operations , Hardware , Pressure Vessels ,

    • NACA-TR-468 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1934
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This report presents the results of wind tunnel tests made to determine the interference drag arising from various arrangements of streamline struts and round struts, or cylinders. Determinations were made of the interference ...
      Subject(s) : AERODYNAMIC , BODIES , COEFFICIENTS , CYLINDERS , DRAG , FAIRINGS , INTERFERENCE , LOCATION , POSITION , STREAMLINED , STRUTS , TESTS , TUNNEL , WIND ,

    • NACA-TN-1425 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1948
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The present report presents a theoretical analysis of an initially flat, rectangular plate with large deflections under either normal pressure or combined normal pressure and side thrust. As small deflections of a flat ...
      Subject(s) : DIFFERENTIAL , EQUATIONS , FLAT - BUCKLING , FLAT - RECTANGULAR , FLAT - STRESSES , LOADS - PLATES , MATHEMATICS - BOUNDARY VALUES , MATHEMATICS - MATRICES , PLATES , RECTANGULAR , STRESS CALCULATIONS ,

    • NASA-LLIS-0959 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The Challenger (Space Shuttle Flight #51L) accident triggered a detailed review of all of the joints in the Solid Rocket Motor. Analyses showed a potential weakness and ...
      Subject(s) : Energetic Materials - Explosive/Propellant/Pyrotechnic , Launch Vehicle ,

    • NASA-LLIS-6796 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The Terrain-Relative Navigation and Employee Development (TRaiNED) project was a Class D (i.e., low cost, high risk) mission employing a sounding rocket to capture ...

    • NASA-LLIS-0574 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1997
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Potentiometers (pots) are low reliability items. Yet Mars Global Surveyor used 8 pots for confirming solar panel deployment that were non-essential, yet a single failure could have jeopardized ...

    • NASA-LLIS-1418 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2004
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Building a successful Project Management Training and Development Program in a Center dominated by scientists and engineers having cultural indifference to Project Management.
      Subject(s) : Human Resources & Education , leadership , Profession development , Program and Project Management , training ,

    • NASA-TM-4549 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The passive venting techniques for shallow cavities that were investigated consisted of (1) porous floors, (2) slot vents at each end of solid floors, (3) slot vents at each end of porous floors, and (4) pipe vents on solid ...
      Subject(s) : AIRCRAFT , CAVITIES , COUNTERMEASURES , DISTRIBUTION , DRAG , FLAT , FLOW , MACH , NUMBER , PIPES , PLATES , PRESSURE , REDUCTION , SLOTS , SPEED , STATIC , STRUCTURES , SUBSONIC , TRANSONIC , TUBES , VENTING , VENTS ,

    • NASA-LLIS-3716 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2010
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      After 11 year of spaceflight, it was discovered that the dual string Stardust/NExT spacecraft was incapable of switching to the redundant flight system. Flight software changes made only 3 ...
      Subject(s) : Additional Categories. , Additional Categories.Flight Equipment , Additional Categories.Flight Operations , Additional Categories.Payloads , Additional Categories.Software , Additional Categories.Spacecraft , Additional Categories.Test & Verification , Additional Categories.Test Facility , Engineering Design (Phase C/D).Robotics , Engineering Design (Phase C/D).Simulators and Training Systems , Engineering Design (Phase C/D).Software Engineering , Engineering Design (Phase C/D).Spacecraft and Spacecraft Instruments , Integration and Testing , Systems Engineering and Analysis.Planning of requirements verification processes ,

    • NASA-LLIS-0199 

      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 FRR process which leads to the launch decision is a part of a total management system comprised of many reviews. The chain of events which culminated in the STS 51-L ...
      Subject(s) : Administration/Organization , Policy & Planning , Risk Management/Assessment , Safety & Mission Assurance ,

    • NACA-RM-L56J04 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1957
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Experimental research at transonic speeds to determine lateral control characteristics of flap-type ailerons is needed because the available data are meager and theory is inadequate for accurate prediction ...

    • NASA-LLIS-1172 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Lack of a Well-Developed Long-Term Plan for the NASA Workforce
      Subject(s) : Administration/Organization , Aerospace Safety Advisory Panel , External Relations , Human Resources & Education , Policy & Planning ,

    • NASA-LLIS-0789 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Conduct a formal design inheritance review at the system, subsystem, or assembly level prior to, or in conjunction with, the corresponding subsystem Preliminary Design Review (PDR). The purpose ...

    • NASA-LLIS-4017 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Fixed-price contracts (FPCs) have been and remain the preferred method of procuring outside contractor support for NASA at KSC. A very large FPC contract was awarded to ...
      Subject(s) : Acquisition / procurement strategy and planning , Facilities , Maintenance , Risk management ,

    • NASA-LLIS-1166 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Definition of Many of the Tests Identified in the Draft X-38 (V201) Space Flight Test Plan Appears to be Lagging
      Subject(s) : Aerospace Safety Advisory Panel , Flight Operations , Ground Operations , Policy & Planning , Research & Development , Safety & Mission Assurance , Spacecraft , Test & Verification ,

    • NASA NPG 5900.1 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: PURPOSE. This NPG provides internal guidance in the following areas for Agencywide roles in procuring spare parts:
      a. Program
      b. Procurement
      c. Logistics
      d. Engineering
      APPLICABILITY. This NPG is ...

    • NASA-LLIS-0799 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      To verify that the failure of one of two redundant functions does not impair the ability to transfer to the second function, a rigorous failure modes, effects, and criticality analysis (FMECA) ...

    • NASA-LLIS-1614 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2005
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Functional performance verification requirements are critical for ensuring mission hardware will perform as intended.
      Subject(s) : Configuration Management , Independent Verification and Validation , Risk Management/Assessment , Safety & Mission Assurance ,

    • NACA-TR-835 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1946
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Low-aspect-ratio wings having pointed plan forms are treated on the assumption that the flow potentials in planes at right angles to the long axis of the airfoils are similar to the corresponding two-dimensional potentials.

    • NASA-LLIS-0925 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      During the post modification pressure test, the fore and aft cavity walls deflected inward until it reached the full pressure (8.0 psi) deflection value at only 2psi. The ...
      Subject(s) : Aircraft , Computer-Aided Design/Manufacturing/Engineering , Configuration Management , Cryogenic Systems , Flight Equipment , Ground Equipment , Pressure Vessels ,