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

Now showing items 1681-1700 of 3613

    • NASA-LLIS-1003 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1997
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Orbiter Avionics Modifications.
      Subject(s) : Aerospace Safety Advisory Panel , Computers , Human Factors , Software ,

    • NACA-TN-2534 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1951
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation was made to determine the low-speed static stability and yawing stability characteristics of a 45° sweptback high-wing, low-horizontalTail configuration with various twin vertical wing fins. In general, ...

    • NASA-LLIS-0631 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      During the STS-90 fight, a hold-down strap used to secure an experiment habitat during in-flight operations broke. While the strap used was identical to those used to ...
      Subject(s) : Flight Equipment , Hardware , Human Factors , Payloads , Research & Development , Safety & Mission Assurance , Test & Verification ,

    • NASA-CR-2714 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1976
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Prediction of airframe noise radiation from the landing gear and wheel wells of commercial aircraft is examined. Measurements of these components on typical aircraft are presented and potential noise sources identified. ...
      Subject(s) : AIRCRAFT , AIRFRAMES , ANALYSIS , GEAR , GENERATORS , JET , LANDING , NOISE , PARTS , PREDICTION , SOUND , TECHNIQUES , VEHICLE , VIBRATION , WHEELS ,

    • NASA-LLIS-1462 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      To avoid members from being required to purchase their own tape recorders for field witness interviews, as initially was the case for the Columbia accident, an initial supply of digital and ...
      Subject(s) : Accident Investigation , Administration/Organization , NASA Standards , Policy & Planning , Safety & Mission Assurance ,

    • NASA-LLIS-0860 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The Mod and Rehab projects are typically requiring that people be moved out of offices while the construction activity is taking place. As a result, there is an extra ...
      Subject(s) : Administration/Organization , Facilities ,

    • NASA-CR-2299 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1973
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The pressure recovery performance of conical diffusers has been measured for a wide range of geometries and inlet flow conditions. The approximate level and location (in terms of diffuser geometry of optimum performance ...
      Subject(s) : AERODYNAMIC , CHARACTERISTICS , CONFIGURATIONS , CONICAL , DIFFUSERS , DISTRIBUTION , EQUATIONS , FLOW , INLET , PRESSURE , RECOVERY , SUBSONIC ,

    • NACA-RM-A54D19 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1954
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      Since wings and controls for supersonic interceptor aircraft maneuvering at high altitudes are required to operate over a wide range of angles of attack, information is required on wing load distribution ...
      Subject(s) : AERODYNAMIC , ANGLE , ASPECT , ATTACK , CENTER , COEFFICIENTS , DELTA , DISTRIBUTION , LOADING , MACH , MODELS , NUMBER , PRESSURE , PROFILES , RATIO , RECTANGULAR , REYNOLDS , SPEED , SUPERSONIC , TESTS , TUNNEL , WIND , WING , WINGS ,

    • NASA-LLIS-5163 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Overly aggressive top-level requirements for launch rate may have contributed to budget overruns for the Constellation program. Early involvement of stakeholders, such as the ground operations organization, in requirements ...
      Subject(s) : Missions and Systems Requirements Definition. , Missions and Systems Requirements Definition.Level 0/1 Requirements ,

    • NASA-LLIS-0386 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A technician inadvertently shorted a connector on the test battery to a wrong harness connector. The resultant battery short circuit destroyed the test battery, the battery wiring harness, ...
      Subject(s) : Energy , Human Factors ,

    • NASA-LLIS-0190 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Launch complex 39B demonstrated satisfactory capability during the STS 51-L launch, with a few exceptions. It was anticipated that the initial shuttle launch from LC 39B ...
      Subject(s) : Configuration Management , Facilities , Ground Operations , Hardware ,

    • NASA-TN-636 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1938
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Wind-tunnel data are presented on the rate of change of yawing moment with sideslip for tests of 9 complete airplane models, 20 fuselage shapes, and 3 wing models with various combinations of dihedral, sweepback, and twist. ...

    • NASA-LLIS-1250 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Terrorist attacks of 9/11 have reinforced the need to protect NASA network and communications resources from intrusion.
      Subject(s) : Aerospace Safety Advisory Panel , Communication Systems , Computers , Policy & Planning , Risk Management/Assessment , Security ,

    • NASA-LLIS-0834 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Extravehicular Activities (EVAs) are very demanding and specialized space flight activities. With the substantial costs from any unsuccessful EVA and the limited opportunities for work-arounds, ...

    • NASA-LLIS-0046 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1991
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A 65-ton mobile crane was hoisting a 40,000 pound test weight from payload canister #2 to a flatbed truck. The test weight was 8 to 10 feet above the canister doors when ...
      Subject(s) : Facilities , Flight Equipment , Ground Equipment , Ground Operations , Hardware , Lifting Devices , Payloads , Test Article ,

    • NACA-TN-3786 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1958
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A comprehensive review of failure of stiffened curved plates and shells is presented. Panel instability in stiffened curved plates and general instability of stiffened cylinders are discussed. The loadings considered for ...
      Subject(s) : BENDING , CIRCULAR CYLINDERS , COMPRESSIVE STRENGTH , CURVED PANELS , HANDBOOKS , OPENINGS , PLASTIC PROPERTIES , PRESSURE EFFECTS , SHEAR STRENGTH , SHELLS (STRUCTURAL FORMS) , STIFFENING , STRUCTURAL STABILITY , TORSION ,

    • NASA-LLIS-0983 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Procurement of a fixed price spacecraft was a cost effective strategy to reduce total mission cost. However, the impact of undefined interfaces at the start of the contract ...
      Subject(s) : Financial Management , Hardware , Procurement Small Business & Industrial Relations , Research & Development , Spacecraft ,

    • NASA-LLIS-0592 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1998
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The Microgravity Smoldering Combustion protoflight unit was flown on the STS69 shuttle mission. Resulting flight data indicated anomalous readings from two thermocouples. ...
      Subject(s) : Parts Materials & Processes ,

    • NACA-WR-L-761 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1941
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation of the effects of propeller operation on pitching moments has been made with particular reference to the effect of propeller forces, the field of flow in the slipstream, and the increments of lift on the ...

    • NASA-STD-7002 REV A 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2004
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This standard includes selected environmental exposure tests for hardware operating in earth orbit. The tests included are generally regarded as the most critical and the ones having the highest cost and schedule impact. ...
      Subject(s) : EMC , Functional , Mechanical , Payload , Protoflight , Spacecraft , Test requirements , Thermal ,