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

Now showing items 1521-1540 of 3613

    • NASA-LLIS-3641 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Each payload standard mix cargo harness (SMCH) must be validated before being installed in the Orbiter. This is because the payload configuration changes with each mission. The Automated Wire ...
      Subject(s) : Ground Equipment , Ground processing and manifesting , Maintenance ,

    • NASA-LLIS-0375 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Viking adopted a simple single-number criterion for managing the risk in selecting "optimum" downlink science data rates, and used it consistently in sequence planning. Formal adoption by the ...
      Subject(s) : Communication Systems , Operations Planning , Policy & Planning , Risk Management/Assessment ,

    • NASA-TN-D-6643 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1972
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An iterative method, which is characterized as a maximum-likelihood minimum-variance technique, was used to extract the aerodynamic parameters of a Navion airplane from flight data. The purposes were to compare the results ...
      Subject(s) : AERODYNAMIC , AIRCRAFT , CHARACTERISTICS , COEFFICIENTS , ESTIMATES , FLIGHT , ITERATIVE , LIKELIHOOD , MATHEMATICAL , MATHEMATICS , MATRICES , MAXIMUM , MODELS , NAVION , PARAMETERIZATION , SOLUTION , TESTS ,

    • NACA-TN-1050 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1946
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: A vertical-tail model with stub fuselage was tested in combination with various simulated horizontal tails to determine the effect of horizontal-tail span and location on the aerodynamic characteristics of the vertical ...
      Subject(s) : AIRFOILS , END , HINGE , HORIZONTAL , LIFT , LIFTING , LINE , MOMENTS , NACA , PLATES , STABILITY , SURFACES , TAIL , TESTS , THEORIES , TUNNEL , VERTICAL , WIND ,

    • NASA-LLIS-0218 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      When the mission control center was first activated in the early 1960s, it was considered a technical marvel. However, this original architecture has received only modest ...
      Subject(s) : Computers , Flight Operations , Launch Process , Range Operations ,

    • NASA-LLIS-1243 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2002
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Orbiter logistics supportability challenges due to parts obsolescence, business closures, etc.
      Subject(s) : Aerospace Safety Advisory Panel , Logistics , Risk Management/Assessment , Spacecraft ,

    • NACA-RM-L50H29 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1950
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The sensitivity of the maximum lift coefficient t o mall changes in the position of slotted flaps with relation to the airfoil is shown in reference 1. In the past , two-dimensional tests have been used ...

    • NASA-LLIS-2337 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2009
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Data from a health check of the MSL spacecraft, conducted following acoustic test and prior to solar thermal vacuum test, suggested excessive RF signal loss due to possible telecom subsystem ...
      Subject(s) : Communication Systems , Flight Equipment , Hardware , Payloads , Spacecraft , Spacecraft and Spacecraft Instruments , Test & Verification , und Equipment ,

    • NASA-TN-D-6098 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1971
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Comparison of aircraft and surface vehicle stopping performance under varying runway conditions.
      Subject(s) : AIRCRAFT LANDING , ICE , NASA PROGRAMS , RUNWAYS , SLUSH , SNOW , STOPPING , SURFACE VEHICLES , WATER ,

    • NACA-TN-2010 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1950
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An investigation has been conducted in the Langley stability tunnel to determine the effects of changes in horizontal-tail size and location on the static lateral stability characteristics of a complete model with wing and ...
      Subject(s) : AIRFOILS , CHARACTERISTICS , COMBINATIONS , DRAG , FUSELAGE , HORIZONTAL , LATERAL , LOW , NACA , ORDINATES , POSITION , STABILITY , STATIC , SURFACES , SWEPTBACK , TAIL , TESTS , TUNNEL , WIND , WING , WINGS ,

    • NACA-TN-1197 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1947
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: An experimental investigation of the general instability of reinforced thin-walled metal cylinders was carried out at the California Institute of Technology. The basic parameters involved were the spacing and sectional ...
      Subject(s) : CYLINDERS , METAL - INSTABILITY , CYLINDERS , THIN - STRENGTH , CYLINDERS , THIN - TORSION , LOADS - CYLINDERS , STRESSED SKIN - CYLINDERS , CIRCULAR , STRESSED SKIN - CYLINDERS , METAL ,

    • NASA-LLIS-0081 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1992
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      A General Contractor, was in the process of installing a hydraulic elevator at the centaur payload operations control center, (CPOCC) Phase I, Cape Canaveral Air Force ...
      Subject(s) : Energy , Facilities , Hardware , Safety & Mission Assurance ,

    • NASA-LLIS-1013 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1997
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Description of Driving Event:
      Parts Obsolescence May be Caused by Several Issues Including Vendors Going Out of Business, Discontinuance of a Part, and Environmental Law Changes.
      Subject(s) : Administration/Organization , Aerospace Safety Advisory Panel , Environment , Ground Operations , Hazardous/Toxic Waste/Materials , Industrial Operations , Logistics , Parts Materials & Processes ,

    • NACA-TN-2764 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1952
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: The accuracy and range of applicability of the linearized theory, second-order theory, tangent-cone method, conical-shock-expansion theory, and Newtonian theory for predicting pressure distributions on pointed bodies of ...
      Subject(s) : AERODYNAMIC , BODIES , FLOW , SUPERSONIC , THEORY ,

    • NASA-LLIS-0640 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1999
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Past analyses of electronic, mechanical, and optical hardware performance have sometimes focused on steady state characteristics to the exclusion of known transients. As indicated in the ...
      Subject(s) : angular velocity , Cryogenic Systems , Energetic Materials - Explosive/Propellant/Pyrotechnic , Flight Equipment , impingement , magnetic torquer , Mishap Reporting , roll rate , Spacecraft , spacecraft spin , subsystem and instrument development , telemetry , thrust neutralizer , thrust vector , torque rod , WIRE failure ,

    • NASA NPR 7120 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: PURPOSE
      a. This document provides the procedural requirements and processes for implementing Health and Medical Technical Authority (HMTA) throughout the Agency.
      APPLICABILITY ...

    • NASA-LLIS-1389 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2004
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract: This lesson is intended to broaden awareness of an observed problem with some models of the Weller® Model TCP12P Soldering Iron. Recommendations apply to soldering irons in general.
      Subject(s) : Fire Protection , Industrial Operations , Parts Materials & Processes ,

    • NACA-RM-A55A28 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1955
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: INTRODUCTION
      The calculation and prediction of dynamic stability has assumed considerable importance in recent years and, in fact, has become a necessary part of nearly all current airplane design. The ...
      Subject(s) : AIRCRAFT , ASSEMBLIES , DELTA , DYNAMICS , FLUID , MODELS , ROTARY , SPEED , STABILITY , STABILIZERS , STATIC , SUBSONIC , TAIL , TESTS , TUNNEL , WIND , WINGS ,

    • NASA-LLIS-6216 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;2011
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: JPL flight hardware was damaged during a lift operation preceding a test of the MSL rover Mobility Assembly due to an undetected mechanical interference that was signaled by an anomalous load cell reading. The load cell ...
      Subject(s) : Additional Categories.Flight Equipment , Additional Categories.Ground Equipment , Additional Categories.Hardware , Additional Categories.Lifting Devices , Additional Categories.Payloads , Additional Categories.Safety & Mission Assurance , Additional Categories.Spacecraft , Additional Categories.Test & Verification , Additional Categories.Test Article , Additional Categories.Test Facility , Integration and Testing , Safety and Mission Assurance.Advanced planning of safety systems , Systems Engineering and Analysis.Human factors planning ,

    • NASA-LLIS-0394 

      Type: standard
      Source: NASA - National Aeronautics and Space Administration (NASA):;1995
      Organization : NASA - National Aeronautics and Space Administration (NASA)
      Abstract: Abstract:
      Near the end of the Voyager 2 Saturn encounter, the scan platform azimuth actuator seized, causing a scan platform pointing error that resulted in a loss of some data. Recommendations involved ...
      Subject(s) : Parts Materials & Processes , Spacecraft , Test & Verification ,