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

Now showing items 101-120 of 3613

    • NASA-LLIS-1448 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2003
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Different software tools with differing access protocols caused inefficiencies. Electronic investigation tools should have secure, automated, user-friendly access.
      Subject(s) : Accident Investigation , Administration/Organization , Computers , Configuration Management , Information Technology/Systems , NASA Standards , Policy & Planning , Safety & Mission Assurance , Security ,

    • NASA-LLIS-0886 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Although a mission assurance manager was assigned to MCO during project development, there was no independent mission assurance function established for the work performed at JPL following ...
      Subject(s) : Documentation , Failure Reporting and Corrective Action System , Flight Operations , FRACAS , Management Oversight , Policy & Planning , Product Assurance , Risk Management/Assessment , Safety & Mission Assurance , Software , Software Quality Assurance , Software Test , Spacecraft , SQA , Test & Verification ,

    • NACA-TN-2502 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1951
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Force, moment, pressure-distribution, and boundary-layer measurements are presented for a series of five airfoil sections. The stalling characteristics of these airfoil sections at low speeds are of three types:
      1. ...
      Subject(s) : BOUNDARY , DESIGNATED , LAYER , PROFILES , SECTION , SECTIONS , STALLING , VARIABLES , WING ,

    • NASA-CR-413 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1966
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Linear aerodynamic loads for cone-cylinder configurations in trisonic range
      Subject(s) : AERODYNAMIC , CONE , CONES , CYLINDER , CYLINDERS , DISTRIBUTION , FORCES , LOAD , LOADS , SPEED , SUBSONIC , TRISONIC , TUNNELS , WIND ,

    • NACA-RM-A52L04 REV A 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1953
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      In the classical study of the longitudinal motion of an aircraft, it is usually found that the motion resulting from a small equilibrium destroying disturbance consist of two modes: one, a lightly damped, ...

    • NACA-TR-971 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1950
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The stability derivatives valid for a limited range of supersonic speeds are presented for a series of sweptback wings tapered to a point with sweptback or sweptforward trailing edges. These wings were derived by ...
      Subject(s) : AERODYNAMIC , AIRCRAFT , COMPUTATIONAL , DELTA , DISTRIBUTION , DYNAMICS , EDGES , EFFECT , FLOW , FLUID , LOADING , PARTS , PRESSURE , STABILITY , SUPERSONIC , SWEEP , SWEPT , THIN , TRAILING , WING , WINGS ,

    • NASA-LLIS-0178 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      During processing, employees failed to perform checks of the mandatory inspection points of the orings as specified in the acceptance criteria. However, a review of ...
      Subject(s) : Risk Management/Assessment , Test & Verification ,

    • NACA-TN-167 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1923
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: In the first series of wind tunnel tests, the drag and cross wing force of all the struts were measured at a wind speed of 30 mph and at angles of yaw from 0 degrees to 20 degrees. To determine the magnitude of the VL ...
      Subject(s) : METAL , PROPELLERS ,

    • NASA-LLIS-5061 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2012
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: One of the major goals of the Constellation Program was to reduce life-cycle costs and the logistics footprint. A comprehensive set of supportability requirements was needed at the Program level to minimize the logistics ...

    • NASA-LLIS-1199 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1990
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      On October 3, 1990, at approximately 0940 hours at the Vertical Assembly Building Transfer Aisle, the OV-104 Orbiter was being rotated toward the vertical position when ...
      Subject(s) : Configuration Management , Facilities , Flight Equipment , Flight Operations , Ground Equipment , Ground Operations , Hardware , Human Factors , Launch Process , Logistics , Mishap Reporting , Parts Materials & Processes ,

    • NASA-LLIS-0821 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2000
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Practice:
      This practice provides proven techniques for enhancing the reliability of Automatic Transfer Switches (ATS) used in critical applications. Systems which require the use of ATS may be optimized ...

    • NACA-TN-1705 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1948
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      In structural members, discontinuities such as holes produce stress concentrate ions but the effects of plastic flow on such stress concentrations, especially under repeated loads, are not generally known. ...
      Subject(s) : ALUMINUM ALLOYS , SHEET - ALCOA 24ST , EFFECT OF HOLES , LOADS - PLATES , FLAT , PLATES - PLASTICITY , PLATES - TENSION , PLATES , FLAT - STRESSES , STRESS DISTRIBUTION - HOLES ,

    • NASA-LLIS-0031 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Post launch checkout and semi-annual GOX vent arm maintenance requires technicians to service the GOX vent arm upper hinge and associated flexhoses. The GOX vent arm upper ...
      Subject(s) : Facilities , Ground Equipment , Ground Operations , Hardware , Human Factors , Industrial Operations , Personal Protective Equipment , Safety & Mission Assurance ,

    • NASA-LLIS-0963 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Computer mathematical models had shown the engine to be sensitive to small changes in propellant conditions, and that timing relative to opening the propellant valves was ...
      Subject(s) : Configuration Management , Cryogenic Systems , Ground Equipment , Hardware , Launch Vehicle , Parts Materials & Processes , Safety & Mission Assurance , Spacecraft , Test Article , Test Facility ,

    • NASA-LLIS-0619 

      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 primary objective of the Advanced Composition Explorer (ACE) Project was to determine and compare the elemental and isotopic composition of several distinct samples ...
      Subject(s) : Administration/Organization , Policy & Planning , Test & Verification ,

    • NASA-LLIS-1421 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2004
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The training and development of new or inexperienced Project Managers (PM) can be greatly enhanced by pairing them with a Deputy Project Manager (DPM) that is experienced in at least one ...
      Subject(s) : management best-practices , management team , personnel assignments , Program and Project Management , Training and development ,

    • NASA-TM-78533 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1979
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Wind-tunnel tests were conducted to investigate the side forces and yawing moments that can occur at high angles of attack and zero sideslip for cylindrical bodies of revolution. Two bodies having several tangent ogive ...
      Subject(s) : AERODYNAMIC , AFTERBODIES , ANGLE , ATTACK , BODIES , CHARACTERISTICS , CYLINDERS , FINENESS , FOREBODIES , MACH , NOSES , NUMBER , RATIO , REVOLUTION , REYNOLDS , ROTATING , TESTS , TUNNEL , WIND ,

    • NASA-LLIS-3116 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2010
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      The Space Shuttle Orbital Maneuvering System (OMS) pod rotator (a 5-ton jack screw) was bent on three occasions because of overloading. As a result, Boeing designed a system consisting of two ...
      Subject(s) : Ground Equipment , Hardware , Lifting Devices , Simulators and Training Systems , Systems analysis - cost analysis , Vehicle concepts ,

    • NASA-TN-D-7815 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1974
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The characteristics, which include the cornering-force and drag-force friction coefficients and self-alining torque, were obtained on dry, damp, and flooded runway surfaces over a range of yaw angles from 0 deg to 12 deg ...
      Subject(s) : AERODYNAMIC COEFFICIENTS , AIRCRAFT TIRES , FRICTION DRAG , HYDROPLANING , RUNWAY CONDITIONS , SELF ALIGNMENT , TORQUE , TRACTION , TREADS ,

    • NASA-STD-8709.20 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2010
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: PURPOSE
      This NASA-Standard (NASA-STD) defines the process requirements for managing the application of NASA's SMA requirements, under the SMA TA. This is a broad-scope document with six main objectives: ...