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

Now showing items 2981-3000 of 3613

    • NASA-LLIS-0921 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The loss of MCO was attributed to, among other causes, the lack of a controlled and effective process for acquisition of contractor-developed, mission critical software. NASA Centers should ...
      Subject(s) : Contract Monitoring , Performance Based Contracting , Procurement Small Business & Industrial Relations , Software , Software IV&V , Software Quality Assurance (SQA) , Software Standards , Spacecraft , System Contractor Oversight , Test & Verification ,

    • NACA-TN-3818 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1956
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation was conducted in the Langley high-speed 7- by 10-foot tunnel to determine the horizontal- and vertical-tail contributions to the static lateral stability of a complete-model swept-wing configuration at ...

    • NACA-TN-2463 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1951
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An experimental investigation has been made of the pressure distribution about a circular cylinder at yaw angles of 0°, 15°, 30°, 45°, and 60° for Reynolds numbers from below the critical value up ...

    • NACA-TR-1143 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1953
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A vector study of the partial-differential equation of steady linearized supersonic flow is presented. General expressions, which relate the velocity potential in the stream to the conditions on the disturbing surfaces, ...
      Subject(s) : AERODYNAMIC , ANALYSIS , ASSEMBLIES , DAMPING , DIFFERENTIAL , DISTRIBUTION , EQUATIONS , FINS , FLOW , INTERFERENCE , LINEAR , PARTIAL , POTENTIAL , PRESSURE , ROLL , STEADY , SUPERSONIC , TAIL , VECTOR ,

    • NASA-LLIS-0518 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1994
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The Gateway Tether Experiment (GATE) is a single tether satellite system that will develop and test control technology for a tethered system. Originally a free flying ...
      Subject(s) : Research & Development , Spacecraft ,

    • NASA-LLIS-1374 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The company's failure to implement and enforce their company safety program, as defined in their Safety & Health plan submitted to NASA, resulted in a lax safety culture. This lax safety ...
      Subject(s) : Configuration Management , Energy , Facilities , Independent Verification and Validation , Industrial Operations , Policy & Planning , Procurement Small Business & Industrial Relations , Program and Project Management , Risk Management/Assessment , Safety & Mission Assurance , Test & Verification ,

    • NACA-TN-3829 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1956
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Spontaneous ignition temperatures from 1 to 9 atmospheres were measured in air for n-heptane (straight-chain paraffin), isooctane (branched-chain paraffin), benzene (aromatic), and JP-4 and JP-5 fuels. A 125-cc ...

    • NASA-TM-X-72805 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1976
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A limited test program was conducted to extend and supplement the braking and cornering data on a 30 x 11.5-14.5, type VIII, aircraft tire to refine the tire/runway friction model for use in the development of an aircraft ...
      Subject(s) : AIRCRAFT TIRES , BRAKING , COEFFICIENT OF FRICTION , GROUND SPEED , PERFORMANCE TESTS , RUNWAY CONDITIONS , TRACTION ,

    • NASA-LLIS-0131 

      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 environmental control system (ECS) pressure distribution unit pre-operations set-up requires several flexhose connections and leak checks prior to operation. Pressure ...
      Subject(s) : Configuration Management , Ground Equipment , Ground Operations , Hardware ,

    • NASA-STD-5020 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Purpose
      The purpose of this Standard is to specify requirements for design and analysis of threaded fastening systems in NASA spaceflight hardware.
      Applicability
      This Standard ...

    • NASA-STD-8719.24 ANX W/CHG 2 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: FOREWORD
      The Original Text column of the following requirements matrix contains the NASA Expendable Launch Vehicle (ELV) payload safety requirements that are to be tailored for each NASA ELV payload ...

    • NASA-LLIS-1134 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Workforce Downsizing Impacts on Critical Skills at Office of Space Flight (OSF) Centers.
      Subject(s) : Administration/Organization , Aerospace Safety Advisory Panel , Human Resources & Education , Policy & Planning , Risk Management/Assessment ,

    • NASA-LLIS-4966 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The word "critical," as defined in NPR 8715.3, was misinterpreted during the Constellation Program, which led to unnecessary work for activities that were deemed "critical." The term "critical" in the NPR has a specific ...

    • NACA-TR-1204 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1954
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: In the process of analyzing the longitudinal frequency-response characteristics of aircraft, information on some of the methods of analysis has been obtained by the Langley Aeronautical Laboratory of the National Advisory ...

    • NASA-LLIS-2536 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2010
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A routine in-flight MRO spacecraft sequence placed the HiRISE instrument in an attitude where the sunshade was shaded for an extended period. This unexpectedly caused the sunshade to drop ...
      Subject(s) : Additional Categories.Environment , Additional Categories.Flight Equipment , Additional Categories.Flight Operations , Additional Categories.Hardware , Additional Categories.Payloads , Additional Categories.Spacecraft , Engineering Design (Phase C/D).Spacecraft and Spacecraft Instruments ,

    • NACA-TR-1234 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1955
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This report treats the Kernel function of an integral equation that relates a known prescribed downwash distribution to an unknown lift distribution for a harmonically oscillating finite wing in compressible subsonic flow. ...
      Subject(s) : AERODYNAMIC , AIRCRAFT , ANALYSIS , DISTRIBUTION , DOWNWASH , EQUATIONS , FLOW , FORCE , FORCES , FUNCTIONS , HARMONIC , INCOMPRESSIBLE , INTEGRAL , KERNEL , LIFT , MATHEMATICS , OSCILLATION , OSCILLATIONS , PARTS , PROPERTY , SUBSONIC , WING , WINGS ,

    • NACA-RB-3I20 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1943
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Two methods are presented for determining the horizontal location of the stick-fixed neutral point from wind-tunnel data. One method involves the solution of a mathematical equation; whereas the other method is a graphical ...

    • NASA-LLIS-0610 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Since 1980, the Materials Engineering Branch has been involved in operational life testing of spacecraft components. These include encoder lamps and light emitting diodes, ...
      Subject(s) : Research & Development , Test & Verification ,

    • NASA-LLIS-1625 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2005
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Problems were experience bringing NASA F-15 837 back to flight status after not flying for over 18 months. The problems resulted in cost and schedule slips that could have been prevented if ...
      Subject(s) : Aircraft , Flight Equipment , Flight Operations , Ground Operations , Handling , Hardware , Materials , Packaging , Parts , Processes , Program and Project Management , Safety & Mission Assurance , Storage ,

    • NACA-TR-677 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1939
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation was made in the NACA 7 by 10-foot wind tunnel of a large-chord NACA 23012 airfoil with several arrangements of 25.66 percent chord slotted flaps to determine the section aerodynamic characteristics as ...
      Subject(s) : AERODYNAMIC , AIRFOIL , AIRFOILS , CHARACTERISTICS , COEFFICIENTS , DEFLECTION , DRAG , FLAPS , LIFT , LOCATION , MOMENTS , PITCHING , POSITION , PROFILES , SHAPES , SLOTS , TESTS , TUNNEL , WIND , WING ,