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

Now showing items 2321-2340 of 3613

    • NACA-TN-2597 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1952
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: In the present investigation of the flow of air in a thin laminar boundary layer on a flat plate, the Crocco method has been used to solve the simultaneous differential equations of momentum and energy involved in such ...

    • NACA-RM-A53A30 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1953
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      In selecting a wing for a high-speed interceptor airplane, the designer has the choice of a large variety of possible shapes. Since an intelligent selection requires a knowledge of the effects of the various ...
      Subject(s) : AERODYNAMIC , ASPECT , BODY , CONFIGURATIONS , DELTA , DISTRIBUTION , DRAG , EDGES , FORCES , LEADING , LIFT , LOAD , LOADING , LONGITUDINAL , LOW , MOMENTS , PITCHING , PROFILES , RATIO , SHARP , SPEED , STABILITY , STATIC , SUBSONIC , SUPERSONIC , SWEPTBACK , TESTS , THICKNESS , THIN , TUNNEL , UNSWEPT , WIND , WING , WINGS ,

    • NASA-CR-1285 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1969
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Potential structural materials and design concepts for light aircraft

    • NACA-RM-A55J28 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1956
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The computing method of reference 1 has been effectively used to estimate the zero-lift drag-rise coefficients of various relatively smooth wing-body-tail combinations (refs. 2, 13, and 4). However this ...

    • NASA NPD 3280.8 REV G 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2009
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Applicability
      This NPD applies to NASA Headquarters and NASA Centers, including Component Facilities.

    • NASA-LLIS-0456 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1991
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Electrical test determined no electrical shorts to case. However, an internal direct short was detected. Attempts to restart pump should not be less than 60 seconds elapsed time.
      Subject(s) : Hardware ,

    • NASA-LLIS-0181 

      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 winches are used to lift and lower the FRCS mezzanine access platforms at the 207 foot level of the RSS. Should they fail during retraction or extension operations, ...
      Subject(s) : Facilities , Ground Equipment , Ground Operations , Hardware ,

    • NACA-TN-417 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1932
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Wind-tunnel tests have been made to find the lift, drag, and center-of-pressure characteristics of a Hall high-lift wing model. The Hall wing is essentially a split-flap airfoil with an internal air passage. Air enters the ...

    • NASA NPD 1900.9 REV E 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2010
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: APPLICABILITY
      This directive applies to NASA Headquarters and NASA Centers, including Component Facilities.

    • NASA-LLIS-1202 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A battery charger design was reported to have experienced catastrophic component failure during vibration testing, resulting in fractured and broken component leads of ...
      Subject(s) : Flight Equipment , Hardware , Parts Materials & Processes ,

    • NASA-LLIS-4958 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: In the Constellation Program, safety risks were captured using a risk management tool. This led to duplicated efforts and misclassification of the risks. To prevent this in future programs, assessments of safety risks ...

    • NASA-LLIS-0824 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      During system design, choose electronic components/devices which will provide maximum failure tolerance from Space Radiation Effects. The information above provides guidance in selection of ...

    • NASA-LLIS-5336 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A NASA Engineering and Safety Center (NESC) team discovered that the design of NiH2 CPV batteries may be susceptible to a unique electrolyte bridging between the two internal cells resulting ...
      Subject(s) : Power , Spacecraft and Spacecraft Instruments ,

    • NASA-LLIS-0034 

      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 main propulsion system's (MPS) LH2 system operations include the transfer of LH2 from the pad storage tank to the orbiter and pressurization of the external tank during ...
      Subject(s) : Cryogenic Systems , Energetic Materials - Explosive/Propellant/Pyrotechnic , Facilities , Flight Equipment , Ground Equipment , Ground Operations , Hardware , Hazardous/Toxic Waste/Materials , Launch Process , Launch Vehicle , Parts Materials & Processes , Pressure Vessels ,

    • NACA-TN-2073 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1950
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The theory of elasticity shows that the maximum stress at a circular hole in an infinite plate in tension is three times the applied stress when the material remains elastic. The effect of plasticity of the material is to ...
      Subject(s) : ALUMINUM ALLOYS - ALCOA 24ST3 , EFFECT OF HOLES , FLAT , FLAT - STRESSES , LOADS - PLATES , PLATES , PLATES - TENSION , STRESS DISTRIBUTION - HOLES , THEORIES - ELASTICITY ,

    • NASA-LLIS-0990 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      White particulate residue from the ester-plasticized polyurethane purge line was flushed from the tubing wall and contaminated the NOAA N' SBUV/2 (Solar Backscatter ...
      Subject(s) : Ground Equipment , Parts Materials & Processes , Test & Verification , Test Article , Test Facility ,

    • NASA-LLIS-3640 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The Ground Lightning Monitoring System (GLMS) was sold to the Shuttle Program as a go/no-go indicator for the overall health of the Space Shuttle vehicle following a lightning event. The ...
      Subject(s) : Aircraft , Crew operations and supprot concepts , Early requirements and standards definition , Entry Systems , Ground Equipment , Ground Operations , Ground processing and manifesting , Ground support systems , Launch support systems , Mission definition and planning , Review systems and boards , Systems analysis - cost analysis , Test & Verification ,

    • NASA-LLIS-0582 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1997
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A study supports the premise that informal peer review is valuable in ensuring that the appropriate level of technical penetration is attained during interrogation of designs. Refocus formal ...
      Subject(s) : Administration/Organization , Policy & Planning ,

    • NASA-LLIS-1359 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Chandra silverized teflon MLI layers are degrading faster than pre-launch predictions, allowing the spacecraft to reach hotter temps earlier in the mission than predicted. ...
      Subject(s) : Test & Verification ,

    • NASA-LLIS-3396 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2010
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Although the Dawn IPS was planned for the most part as a built-to-print inheritance of the DS1 design, the Dawn project encountered significant cost and schedule escalation and technical ...
      Subject(s) : Engineering Design (Phase C/D).Propulsion , Engineering Design (Phase C/D).Spacecraft and Spacecraft Instruments , Manufacturing and Assembly , Program Management.Acquisition / procurement strategy and planning ,