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

Now showing items 2681-2700 of 3613

    • NACA-TR-1056 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1951
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A simplified lifting-surface theory that includes effects of compressibility and spanwise variation of section lift-curve slope is used to provide charts with which antisymmetric loading due to arbitrary antisymmetric angle ...
      Subject(s) : AERODYNAMIC , AILERONS , ANTISYMMETRY , BODIES , CHARACTERISTICS , COMPRESSIBILITY , COMPUTATIONAL , DEFLECTION , DYNAMICS , EFFECTS , FLOW , FLUID , LOADING , LOADS , PLANFORMS , ROLL , SIDESLIP , SPAN , SUBSONIC , SWEPT , SYMMETRICAL , WING , WINGS ,

    • NASA-LLIS-0474 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1993
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A new telephone system went into a total failure condition and remained that way for 10 1/2 hours. This failure resulted in the entire lab being without telephone service, ...
      Subject(s) : Emergency Preparedness , Facilities ,

    • NASA-LLIS-1362 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      In order to build and maintain a trusted and established relationship with its data sources and partners, projects must have an awareness and sensitivity to their partner's environment.
      Subject(s) : External Relations , Program and Project Management ,

    • NACA-TN-3422 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1955
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Overall sound-level measurements and frequency analyses of tape recordings of the noise emitted from a 10-foot-diameter, four-blade propeller mounted on a turbine-powered vehicle have been made under static conditions at ...

    • NASA-CR-3515 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1982
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Numerical methods incorporated into a computer program to provide estimates of the subsonic aerodynamic performance of twisted and cambered wings of arbitrary planform with attainable thrust and vortex lift considerations ...
      Subject(s) : AERODYNAMIC , AIRCRAFT , ANGLE , ATTACK , AUGMENTATION , CAMBERED , COEFFICIENTS , COMPUTER , EDGES , ESTIMATING , ITERATION , LEADING , LIFT , LINEAR , PERFORMANCE , PREDICTION , PROGRAMS , SPEED , SUBSONIC , THRUST , TWISTED , VORTICES , WINGS ,

    • NACA-TN-1545 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1948
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation was made to determine optimum double-slotted-flap configurations for seven thin NACA airfoil sections. The airfoils tested were the NACA 63-210, 64-208, 64-210, 641-212, 65-210, 66-210 and 1410 ...
      Subject(s) : AIRFOILS , CHAR , DRAG , FLAPS , LOW , MOMENTS , NACA , ORDINATES , SLOT , SLOTT , SLOTTE , WING ,

    • NASA-LLIS-0175 

      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 SRM Is the primary propulsive element for the space shuttle. The SRM consists of: an insulated and lined segmented rocket motor case loaded with solid propellant; an ...
      Subject(s) : Environment , Flight Equipment , Test & Verification ,

    • NASA-LLIS-1125 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Lack of Dependency Matrix for I-Load Recalculation
      Subject(s) : Aerospace Safety Advisory Panel , Computers , Launch Process , Risk Management/Assessment , Software , Spacecraft ,

    • NACA-TM-1285 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1950
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Because of the unsatisfactory state of knowledge concerning the surface shearing stress of boundary layers with pressure gradients, the problem is re-examined. It is found that for general turbulent boundary layers in wall ...
      Subject(s) : BOUNDARY , DISTRIBUTION , EFFECT , FLAT , FLOW , FRICTION , GRADIENT , INDICATORS , INSTRUMENTS , LAYER , PLATES , PRESSURE , SHEARING , SKIN , STRESS , TURBULENT , VELOCITY , WALLS ,

    • NASA-STD-8719.7 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1998
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: PURPOSE. This document is a guideline for implementing a Facility System Safety Program to meet the requirements of "NASA Safety Policy and Requirements Document," NHB 1700.1 (V1B). The facility acquisition ...

    • NASA NPR 8735.2 REV A W/CHG 1 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2006
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Purpose
      This NASA Procedural Requirements (NPR) sets forth Agency requirements for performance of Government contract quality assurance functions as required by Federal Acquisition Regulation (FAR) ...

    • NASA-LLIS-0751 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      Binary (diffractive) optics combined with conventional (refractive) optics offer a significant potential for space optics reliability improvement.

    • NASA-LLIS-1863 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2008
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      By using computer models of the traveling wave tube (TWT) and electronic power conditioner (EPC), the Lunar Reconnaissance Orbiter (LRO) traveling wave tube amplifier (TWTA) achieved first ...
      Subject(s) : Engineering Design (Phase C/D).Spacecraft and Spacecraft Instruments ,

    • NACA-TR-650 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1939
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Wind-tunnel tests are reported of six 3-blade 10-foot propellers operated in front of a liquid-cooled engine nacelle. The propellers were identical except for blade airfoil sections, which were: Clark y, R.A.F. 6, NACA ...

    • NACA-ACR-L5F27 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1945
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation was made of three interchangeable sealed-gap 0.20-airfoil –chord plain ailerons of different contour on the NACA 65-210 airfoil section. The three aileron contours tested were the true airfoil contour, ...

    • NASA-TM-X-3166 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1975
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation was made in the Langley V/STOL tunnel in order to determine, by the trailing-wing sensor technique, the effectiveness of either a forward-mounted spoiler or a tip-mounted spline as trailing-vortex attenuation ...
      Subject(s) : AIRCRAFT , FACILITIES , FLOW , GEOMETRY , MODELS , SPOILERS , TEST , TESTS , TUNNEL , TURBULENT , UNSWEPT , VORTICES , WAKES , WIND , WINGS ,

    • NASA-LLIS-1197 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Because the final subsystem thermal test of the Deep Space 2 telecommunications subsystem was deleted, an important hardware-software interaction was missed.
      To fully validate performance, ...
      Subject(s) : Communication Systems , end-to-end test , frequency excursion , power-on testing , Software , software test , Spacecraft , telecomm subsystem , Test & Verification , Test Article ,

    • NASA-LLIS-0866 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A personal equipment technician employed by a California Company in support of the operations of the High Altitude Missions Branch, was fatally injured by inhalation of ...
      Subject(s) : Administration/Organization , Aircraft , Flight Equipment , Hardware , Hazardous/Toxic Waste/Materials , Policy & Planning , Test & Verification , Test Facility ,

    • NACA-TN-3360 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1955
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation has been conducted to determine the effects of several factors associated with the propeller installation on the ability of a wing with plain flaps to deflect a propeller slipstream downward as a means for ...

    • NACA-CR-195480 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1996
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Recent experience using ANOPP to predict turbofan engine flyover noise suggests that it over-predicts overall EPNL by a significant amount. An improvement in this prediction method is desired for system optimization and ...
      Subject(s) : AIRCRAFT NOISE , BLADE TIPS , COMBUSTION CHAMBERS , COMPUTER PROGRAMS , ENGINE INLETS , ENGINE NOISE , GAS JETS , MACH NUMBER , NOISE PREDICTION , NOISE SPECTRA , PREDICTION ANALYSIS TECHNIQUES , SUBSONIC FLOW , TURBOFAN ENGINES ,