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

Now showing items 2581-2600 of 3613

    • NACA-TR-899 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1948
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A small-deflection theory is developed for the elastic behavior of orthotropic flat plates in which deflections due to shear are taken into account. In this theory, which covers all types of flat sandwich construction, a ...
      Subject(s) : ANALYSIS (MATHEMATICS) , BOUNDARY VALUE PROBLEMS , CLAMPS , CONSTRAINTS , DEFLECTION , DIFFERENTIAL EQUATIONS , EDGES , EQUILIBRIUM EQUATIONS , FLAT PLATES , LOADS (FORCES) , ORTHOTROPIC PLATES , SANDWICH STRUCTURES , SHEAR STRESS , SUPPORTS ,

    • NASA-LLIS-0056 

      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 hydrazine servicing of the left hand SRB tilt system, the fill/drain quick disconnect (Q.D.) nipple separated during cap removal, allowing the entire 3 1/2 gallon ...
      Subject(s) : Energetic Materials - Explosive/Propellant/Pyrotechnic , Flight Equipment , Ground Equipment , Ground Operations , Launch Process , Launch Vehicle , Packaging Handling Storage , Parts Materials & Processes ,

    • NASA-LLIS-0483 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1996
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      During a swimming skills test at an underwater training facility, an experienced dive instructor lost consciousness during a free dive (with mask and fins). The dive ...
      Subject(s) : Emergency Preparedness , Occupational Health , Safety & Mission Assurance ,

    • NASA-TN-D-8210 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1976
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation was conducted to determine whether large Reynolds number effects occur on isolated boattails, including an analytical study and tests in a 1/3-meter transonic cryogenic tunnel. This investigation was ...
      Subject(s) : ANALYSIS , BOATTAILS , CRYOGENIC , DISTRIBUTION , DRAG , EQUIPMENT , EXPERIMENTATION , NUMBER , PREDICTION , PRESSURE , REYNOLDS , STATIC , TECHNIQUES , TRANSONIC , TUNNELS , WIND ,

    • NASA-LLIS-0255 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The Flexovit grinding wheel, National stock number 3460-00-027-0942, abrasive, resin bound, 7" by 1/4", shape 1397, grit 24, was released from a portable air powered ...
      Subject(s) : Hardware , Industrial Operations ,

    • NASA-LLIS-1277 

      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 critical cable connection fault was not observed during final checkout at the pad, due to insufficient flags in the ground support equipment. The problem resulted in a ...
      Subject(s) : Ground Equipment , Test & Verification ,

    • NASA NPD 7900.4 REV C 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2009
      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 the Jet Propulsion Laboratory, ...

    • NACA-RM-L53H27 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1953
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Extensive research as indicated that airfoil thickness is of primary Importance in the performance f aircraft designed to operate the transonic and supersonic speed ranges. At the request of the National ...

    • NASA NPG 1441.1 REV D 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: PURPOSE. This NPG sets forth the retention periods of Federal records of the Naitonal Aeronautics and Space Administration (NASA). This revised edition has been correlated with the Agency Filing Scheme (Appendix A), which ...

    • NASA-TR-R-287 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1968
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Runge-Kutta formulas of high order with stepsize control through leading truncation error term.
      Subject(s) : CONTROLLABILITY , DIFFERENTIAL EQUATIONS , FORMULAS (MATHEMATICS) , NUMERICAL ANALYSIS , NUMERICAL INTEGRATION , RUNGE-KUTTA METHOD , STEP FUNCTIONS , TRUNCATION ERRORS ,

    • NASA-LLIS-0322 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Experience on the Soviet Space Station showed that long exposure to space radiation affects the transparency of glass and that this effect is reduced by using quartz glass ...
      Subject(s) : Flight Equipment , Hardware , Parts Materials & Processes , Spacecraft ,

    • NASA-LLIS-0096 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Replacement of the upper floating beam forward roller support shaft was in progress to eliminate a stress corrosion concern. The 5-ton bridge crane and a sling were being ...
      Subject(s) : Facilities , Hardware , Lifting Devices ,

    • NASA-LLIS-1055 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1998
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Shuttle-Mir Lessons Learned Analysis and Application
      Subject(s) : Aerospace Safety Advisory Panel , Ground Operations , Policy & Planning , Risk Management/Assessment , Safety & Mission Assurance ,

    • NASA-LLIS-1027 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1997
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Wind Tunnel Fan Blade Cracking at Ames Research Center.
      Subject(s) : Aerospace Safety Advisory Panel , Facilities , Parts Materials & Processes , Policy & Planning , Research & Development , Test Facility ,

    • NACA-RB-L4D29 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1944
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The problem of predicting the strength of stiffened curved sheet under shear loads has received only a moderate amount of attention In the past. One particular aspect of the theory has beep treated to some ...
      Subject(s) : ALCOA , ALLOYS , ALUMINUM , BEAMS , CARRIED , COMBINATIONS , CURVED , CYLINDRICAL , LAL , LOADS , SHEAR , SHEETS , SHELLS , SKIN , STIFFENER , STRENGTH , STRESSED , WEBS , WORK ,

    • NASA NPD 2800.1 REV B 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2008
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: APPLICABILITY
      This NPD applies to NASA Headquarters and NASA Centers, including component facilities and contractors to the extent specified in their contracts.
      This NPD applies to all Agency IT ...

    • NASA-LLIS-0701 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Deflection actuated, pressure assisted coated metal seals, or spring energized Teflon® seals, along with prudent flange joint designs, should be used for high pressure static ...

    • NASA-LLIS-1711 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2005
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The over-current detection scheme for Deep Impact spacecraft heater circuitry failed to detect an over-current condition during ground test due to an inadequate circuit design and test design. ...
      Subject(s) : Additional Categories. , Additional Categories.Flight Equipment , Additional Categories.Ground Equipment , Additional Categories.Ground Operations , Additional Categories.Hardware , Additional Categories.Payloads , Additional Categories.Spacecraft , Additional Categories.Test Article ,

    • NASA-LLIS-1482 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2004
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      In a Code T consortium, the work split process was developed over a period of time. This approach often failed to provide the best results for the team.
      Subject(s) : Program and Project Management ,

    • NACA-RM-L7G09 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1947
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Wind-tunnel tests in the Langley 19-foot pressure tunnel (reference 1) showed that a 42 sweptback wing of aspect ration 4 and NACA 641-112 airfoil sections was longitudinally unstable at the ...