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

Now showing items 481-500 of 3613

    • NASA-LLIS-1095 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2001
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The Center has an existing campus complex of modular buildings fed by a main distribution panel (MDP) with 120-208 volt/3 phase power output. A recent project added 3 more ...
      Subject(s) : Facilities ,

    • NACA-ACR-3L20 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1943
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Force-test measurements in two-dimensional flow have been made in the NACA 4- by 6-foot vertical tunnel to determine the aerodynamic characteristics of an NACA 66(215)-014 airfoil equipped with true-contour, ...

    • NASA-LLIS-0739 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Implement lightning survivability in the design of launch vehicles to avoid lightning induced failures.

    • NACA-RM-A50K27 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1951
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The effectiveness of wing sweep in delaying the detrimental effects of compressibility to higher Mach numbers is well known. One of the principal difficulties encountered in the use of swept-back wings of ...

    • NASA-LLIS-1803 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2007
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      An in-flight failure of a hybrid amplifier used to derive the Ka-band downlink signal for Mars Reconnaissance Orbiter suggests that X-ray screening alone may not be adequate to determine the ...
      Subject(s) : Additional Categories.Communication Systems , Additional Categories.Flight Equipment , Additional Categories.Flight Operations , Additional Categories.Hardware , Additional Categories.Industrial Operations , Additional Categories.Parts , Materials , & Processes , Additional Categories.Payloads , Additional Categories.Risk Management/Assessment , Additional Categories.Safety & Mission Assurance , Additional Categories.Spacecraft , Additional Categories.Test & Verification , Engineering Design (Phase C/D). , Engineering Design (Phase C/D).Spacecraft and Spacecraft Instruments , Manufacturing and Assembly , Program Management.Risk management , Safety and Mission Assurance.Early requirements and standards definition , Safety and Mission Assurance.Product Assurance , Safety and Mission Assurance.Quality , Safety and Mission Assurance.Reliability , Systems Engineering and Analysis. , Systems Engineering and Analysis.Planning of requirements verification processes ,

    • NACA-TR-530 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1936
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This report gives the results of tests in the NACA full-scale and variable-density tunnels of a new wing section, the NACA 23012, which is one of the more promising of an extended series of related airfoils recently ...
      Subject(s) : AERODYNAMIC , CAMBER , COEFFICIENTS , DRAG , FULL , LIFT , MOMENTS , NUMBER , PITCHING , RATIO , REYNOLDS , SCALE , TESTS , THICKNESS , TUNNEL , WIND , WINGS ,

    • NASA-TP-3358 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: For the safe carriage and separation of stores, it is important to know the flow field environment the store experiences during flight. In order to further the understanding of flow fields in rectangular box cavities at ...
      Subject(s) : BOUNDARY , CAVITIES , CHARACTERISTICS , DISTRIBUTION , FLOW , LAYER , MACH , MEASUREMENT , NUMBER , PRESSURE , REYNOLDS , SPEED , STATIC , SUBSONIC , TRANSONIC , TUNNELS , TURBULENT , WIND ,

    • NASA-LLIS-1513 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2004
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Responsibilities were distributed throughout the consortium, but suppliers would only discuss issues with key decision makers, leaving the expediters and coordinators out of the information ...
      Subject(s) : Communication Systems , Independent Verification and Validation , Policy & Planning , Program and Project Management ,

    • NASA-TN-D-360 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1960
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The results of tests on pressurized ring-stiffened cylinders subjected to compression and bending are presented and discussed. The results obtained at high values of internal pressure differ from those obtained by previous ...
      Subject(s) : BEND , BUCKLING , COMPRESSION , CYLINDRICAL , DEFLECTION , DEPENDENCE , INTERNAL , LOADS , PRESSURE , PRESSURIZING , REINFORCEMENT , RINGS , SHELLS , STABILITY , STRUCTURAL , TESTS , THICKNESS ,

    • NASA-LLIS-0984 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      An in-house instrument build required a significant number of hardware purchases from outside vendors. A one-year acceleration in the development resulted in the need to ...
      Subject(s) : Administration/Organization , Hardware , Parts Materials & Processes , Procurement Small Business & Industrial Relations , Research & Development ,

    • NASA-CR-3704 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1983
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The results of a flight evaluation of winglets on a DC-10 Series 10 aircraft are presented. For sensitive areas of comparison, effects of winglets were determined back to back with and without winglets. Basic and reduced ...
      Subject(s) : AERODYNAMIC CONFIGURATIONS , AERODYNAMIC STABILITY , AIRCRAFT DESIGN , ASSESSMENTS , DC 10 AIRCRAFT , EVALUATION , FLIGHT TESTS , GROUND TESTS , LEADING EDGES , VORTEX ALLEVIATION , WINGLETS , WINGS ,

    • NASA-LLIS-0497 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1997
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The Cassini/Mars Global Surveyor thruster high pressure latch valve was redesigned to use a Kel-F seal instead of Teflon. Because the harder plastic has less ability to seal around small ...
      Subject(s) : Parts Materials & Processes , Spacecraft , Test & Verification , Test Article ,

    • NASA-LLIS-0269 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      False star sightings by the Magellan star scanner during cruise to Venus prevented spacecraft attitude updates and occasionally caused false updates. Two causes were identified: 1) high energy ...
      Subject(s) : Flight Equipment , Optical Sensors , Spacecraft , Workarounds ,

    • NASA-TN-D-8136 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1976
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The increased concern with airplane characteristics at high angles of attack during stall, departure, and spin has motivated research in this angle of attack regime. There is a lack of ...
      Subject(s) : AIRCRAFT , DERIVATIVES , FLIGHT , MODELS , PILOTED , REMOTELY , SPEED , STABILITY , SUBSONIC , TESTS , VEHICLES ,

    • NASA-LLIS-1330 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Although graphite/polymer composites were thought to be immune to space plasma charging because the material is electrically conductive, it may actually retain a significant charge in places ...
      Subject(s) : bulk dielectric charging , conducted electromagnetic interference , conductive surfaces , dielectric materials , Energy , Environment , Flight Equipment , Flight Operations , Hardware , IESD , Industrial Operations , internal electrostatic discharge , Parts Materials & Processes , Payloads , radiated electromagnetic interference , Safety & Mission Assurance , Spacecraft , spacecraft materials , Test & Verification ,

    • NACA-RM-L55D08 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1955
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The airplane configurations previously investigated experimentally at high supersonic and hypersonic speeds have been restricted to misssile types which were not required to land and which, therefore, had ...

    • NACA-WR-L-23 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1946
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Tests were conducted in the Langley 24-inch high-speed tunnel to ascertain the static-pressure and total-pressure losses through screens ranging in mesh from 3 to 12 wires per inch and in wire diameter from 0.023 to 0.041 ...

    • NASA-LLIS-0337 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      For many years, LARC has been studying cavity flow fields at supersonic speeds. This research has included various flow visualization wind tunnel tests to document both ...
      Subject(s) : Aircraft , Test & Verification , Test Facility ,

    • NASA-TN-D-1253 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1962
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Axial-load fatigue tests using loading schedules based on maneuver-load statistics.
      Subject(s) : AXIAL LOAD , AXIAL LOADS , FATIGUE , FATIGUE TESTS , SCHEDULES , SCHEDULING ,

    • NASA-LLIS-1919 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2008
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The use of encapsulant in samples processed in microgravity resulted in non-directional solidification and supercooling of the sample.
      Subject(s) : Engineering Design (Phase C/D). ,