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

Now showing items 3121-3140 of 3613

    • NACA-TR-317 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1930
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: This investigation covers force tests through a large range of angle of attack on a series of monoplane and biplane wing models. The tests were conducted in the atmospheric wind tunnel of the National Advisory Committee ...
      Subject(s) : AERODYNAMIC , ANGLE , ASPECT , ATTACK , AUTOROTATION , BIPLANES , CENTER , CONTROL , DISTRIBUTION , DRAG , DYNAMIC , FLAPS , FORCES , INDEPENDENT , LIFT , MODELS , MONOPLANES , PRESSURE , PROFILES , RATIO , ROTARY , SHAPES , STABILITY , STAGGERING , SURFACES , SWEPTBACK , TESTS , TIPS , TUNNEL , VARIABLES , WIND , WING , WINGS ,

    • NASA-LLIS-0014 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1991
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      In Bldg. 9 at JSC, a 1000-watt quartz immersion heater was being used to heat a small amount of water for a chemical mixing operation in a precious metals shop. The heater, ...
      Subject(s) : Aircraft , Energetic Materials - Explosive/Propellant/Pyrotechnic , Flight Equipment , Flight Operations , Hardware , Launch Vehicle , Spacecraft ,

    • NASA-LLIS-0947 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      The Challenger (Space Shuttle Flight #51L) accident triggered a detailed review of all of the joints in the Solid Rocket Motor. Analyses showed a potential weakness and ...
      Subject(s) : Energetic Materials - Explosive/Propellant/Pyrotechnic , Launch Vehicle ,

    • NASA-TM-X-72697 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1975
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Wind-tunnel tests were conducted to determine the low-speed section characteristics of a 13 percent-thick airfoil designed for general aviation applications. The results were compared with NACA 12 percent-thick sections ...
      Subject(s) : AERODYNAMIC , AIRCRAFT , AIRFOIL , AVIATION , CHARACTERISTICS , COEFFICIENTS , GENERAL , LOW , MODELS , NUMBER , PROFILES , REYNOLDS , SPEED , STABILITY , TESTS , TUNNEL , WIND ,

    • NASA-LLIS-0898 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      During mission operations training for HST Servicing Missions, GSFC conducts "internal" simulations to prepare the operations for Joint Integrated Simulations with the ...
      Subject(s) : Flight Operations , Test & Verification , Test Facility , Training Equipment ,

    • NACA-TN-4404 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1958
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation has been made in a static-test facility at the Langley Aeronautical Laboratory to determine some of the effects of propeller position and overlap on the slipstream deflection characteristics of a configuration ...

    • NASA-CR-1316 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1969
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Theoretical analysis of free vibration of discretely stiffened cylindrical shells with arbitrary end conditions
      Subject(s) : COMPUTER PROGRAMS , CYLINDRICAL SHELLS , DIGITAL COMPUTERS , FLEXIBILITY , FREE VIBRATION , RAYLEIGH-RITZ METHOD , STIFFENING , STIFFNESS , VIBRATION EFFECTS ,

    • NASA-LLIS-0562 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1997
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A model under test in the tunnel required the use of a removable shroud to insulate a sensor from heating while the model was being injected into the tunnel flow. Once the ...
      Subject(s) : Test & Verification , Test Facility ,

    • NASA-LLIS-1394 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2004
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      A fast Track engine test was accepted by NASA before its risks and challenges were fully understood, leading to cost overruns and failure to meet original schedules.
      Subject(s) : Administration/Organization , Configuration Management , External Relations , Financial Management , Human Resources & Education , Policy & Planning , Procurement Small Business & Industrial Relations , Program and Project Management , Research & Development , Risk Management/Assessment ,

    • NACA-TN-1677 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1948
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The lift, drag, and pitching-moment characteristics of several unswept wings were determined by wind-tunnel tests and by calculations using the method of NACA tn no. 1269. The wings were similar in plan from with aspect ...
      Subject(s) : AIRFOILS , ASPECT , CARRIED , CHARACTERISTICS , DRAG , EFFECT , FLAPS , LAL , LARGE , LOW , MOMENTS , NACA , PITCHING , PRESSURE , RATIO , ROUGHNESS , SPLIT , STALLING , SURFACE , TAPERED , TESTS , TUNNEL , WIND , WING , WINGS , WORK ,

    • NACA-TN-3669 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1956
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Measurements were made of perforated metal sheets having the resistance to air flow of a series of open areas ranging from less than 1 percent up to 41 percent. The results showed that the permeability of a perforated sheet ...

    • NASA-CR-152-241 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1979
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A method is described for estimating low speed wind tunnel blockage, including model volume, bubble separation and viscous wake effects. A tunnel-centerline, source/sink distribution is derived from measured wall pressure ...
      Subject(s) : ALGORITHMS , BLOCKING , BUBBLES , CORRELATION , DATA , FLOW , LOW , MODELS , PRESSURE , SCALE , SPEED , TUNNELS , VISCOUS , VOLUME , WALL , WAVES , WIND ,

    • NACA-TN-3551 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1955
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An experiment investigation at low speed was made to determine the effects of fuselage cross section on the static longitudinal and lateral stability characteristics of midwing airplane models having 00 and 450 sweptback ...

    • NASA-LLIS-1384 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Kennedy Space Center (KSC) Projects and Resources Online (KPRO) is a KSC software development project to implement a project management information system that meets the unique requirements ...
      Subject(s) : Program and Project Management , Software ,

    • NACA-TR-D-745 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1942
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The drag characteristics of eight radial-engine cowlings have been determined over a wide speed range in the NACA 8-foot high-speed wind tunnel. The pressure distribution over all cowlings was measured, to and above the ...
      Subject(s) : AERODYNAMIC DRAG , AIRCRAFT ENGINES , COMPRESSIVE STRENGTH , HIGH SPEED , PRESSURE DISTRIBUTION , SCALE MODELS , WIND TUNNEL MODELS , WIND TUNNEL TESTS ,

    • NASA-TM-4363 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An experiment was performed in the Langley 0.3 meter Transonic Cryogenic Tunnel to study the internal acoustic field generated by rectangular cavities in transonic and subsonic flows and to determine the effect of Reynolds ...
      Subject(s) : BOUNDARY , CAVITY , CRYOGENICS , DISTRIBUTION , FIELDS , FLOW , FREE , HIGH , LAYERS , MACH , NUMBER , REYNOLDS , SOUND , SPEED , SUBSONIC , SUPERSONIC , TRANSONIC , TUNNELS , UNSTEADY , WIND , YAW ,

    • NASA-LLIS-4020 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      After an elevator at a launch pad had been refurbished, damage caused by the launch environment during the next launch was excessive, which meant that it was likely that ...
      Subject(s) : Engineering design and project processes and standards , Ground support systems , Launch support systems , Long-term sustainability and maintenance planning , Systems analysis - cost analysis ,

    • NASA-LLIS-1153 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Lack of International Partner Elements Software Source Code
      Subject(s) : Aerospace Safety Advisory Panel , Computers , Policy & Planning , Risk Management/Assessment , Software , Spacecraft , Test & Verification ,

    • NASA-SP-416 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1976
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Results of NASA research in the field of aircraft safety and operating problems are discussed. Topics include: (1) terminal area operations, (2) flight dynamics and control; (3) ground operations; (4) atmospheric environment; ...
      Subject(s) : AERONAUTICAL ENGINEERING , AIR TRAFFIC CONTROL , AIRCRAFT NOISE , AIRCRAFT SAFETY , AIRCRAFT STRUCTURES , ATMOSPHERIC EFFECTS , CONFERENCES , FLIGHT PATHS , HUMAN FACTORS ENGINEERING , NASA PROGRAMS , RESEARCH AND DEVELOPMENT ,

    • NASA-LLIS-0770 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Tests are performed to verify that radio frequency (RF) equipment, such as receivers, transmitters, diplexers, isolators, RF cables, and connectors, can operate without damage or degradation. ...