NASA - National Aeronautics and Space Administration (NASA)

 

Recent Submissions

  • NASA-LLIS-0124 

    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 payload bay duct heater adds measured quantities of heat independently to each duct system. This raises the temperature of the process air from the cooling coils to ...
    Subject(s) : Hardware , Launch Vehicle ,

  • NASA-LLIS-1123 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;1999
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: Description of Driving Even:
    Lack of NASA Range Safety Authority for X-33 and X-34 Programs
    Subject(s) : Administration/Organization , Aerospace Safety Advisory Panel , Flight Operations , Launch Process , Policy & Planning , Range Operations , Spacecraft ,

  • NASA-LLIS-1715 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;2005
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: Abstract:
    Formal documentation of requirements, resolutions, and decisions was once a standard NASA practice. However, the increased use of informal documentation such as viewgraphs and e-mail may be ...
    Subject(s) : Additional Categories. , Additional Categories.Configuration Management , Additional Categories.Flight Equipment , Additional Categories.Hardware , Additional Categories.Payloads , Additional Categories.Spacecraft , Engineering Design (Phase C/D). , Engineering Design (Phase C/D).Spacecraft and Spacecraft Instruments , Missions and Systems Requirements Definition. , Missions and Systems Requirements Definition.Configuration control and data management , Program Management. , Program Management.Configuration and data management , Safety and Mission Assurance. , Safety and Mission Assurance.Review systems and boards ,

  • NASA-LLIS-1485 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;2004
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: Abstract:
    NASA elected at the end of MER Phase A to build a second Mars Exploration Rover at an estimated cost of $243 million. In addition to potentially doubling science return from Mars and mitigating ...
    Subject(s) : Flight Equipment , flight spares , Hardware , integration and test , Policy & Planning , Program and Project Management , Risk Management/Assessment , schedule constraints , schedule margin , Spacecraft , system testbed , Test & Verification , Test Article , test bed ,

  • NASA-LLIS-0759 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;2000
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: Practice:
    Critical design features that reduce joint rotation, improve seal features, provide close tolerances, provide for leak checks, and provide venting are used to improve the reliability of ...

  • NASA-LLIS-1859 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;2008
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: Abstract:
    NASA subject experts can speed negotiating contract specifications because they know what is and is not the state-of-the-art. They can avoid including requirements that would delay delivery ...
    Subject(s) : Systems Engineering and Analysis. , Systems Engineering and Analysis.Level II/III requirements definition ,

  • NACA-TR-648 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;1939
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: Equations and design charts are given for predicting the downwash angles and the wake characteristics for power-off conditions behind plain and flapped wings of the types used in modern design practice. The downwash charts ...
    Subject(s) : AERODYNAMIC , ANALYSIS , ANGLES , ASPECT , CHARTS , DESIGN , DISTRIBUTION , DOWNWASH , DRAG , ELLIPTICITY , FLAPS , FORCES , GEOMETRY , LIFT , LOAD , PREDICTION , PRESSURE , RATIO , SPAN , SWEPT , TECHNIQUES , WAKES , WING , WINGS ,

  • NACA-CB-L5C01 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;1945
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: A method is given for calculating the stick-fixed neutral point of an airplane with propeller windmilling, flaps neutral, and landing gear retracted. This method differs from those formerly used principally in the procedure ...

  • NASA-LLIS-0859 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;1999
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: Description of Driving Event:
    A water line coming into a building was being increased in size to accommodate a new building sprinkler system. The excavation was done, but the compaction that should ...
    Subject(s) : Administration/Organization , Environment , Facilities , Fire Protection ,

  • NASA-TN-D-3437 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;1966
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: Hovering force-test on semispan tilt-wing VTOL MODEL to determine ground effect on full-span flaps used for yaw control
    Subject(s) : AERODYNAMICS , AIRCRAFT , EFFECT , FLAPPING , GROUND , HOVERING , MODEL , MODELS , SEMISPAN , TAKEOFF , TILT , VERTICAL , VTOL , WING , YAW ,

  • NACA-TN-3346 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;1955
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: A rapid method for estimating the downwash behind swept-wing airplanes is presented. The basic assumption is that of a flat horizontal sheet of vortices trailing behind the wing. The integrations for the downwash are handled ...

  • NASA-CR-181851 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;1989
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: The application of selected analysis techniques to low frequency cabin noise associated with advanced propeller engine installations is evaluated. Three design analysis techniques were chosen for evaluation including finite ...
    Subject(s) : AIRCRAFT NOISE , COMMERCIAL AIRCRAFT , ENERGY METHODS , ENGINE NOISE , FINITE ELEMENT METHOD , LOW FREQUENCIES , NOISE PREDICTION (AIRCRAFT) , PROPELLER NOISE , STRUCTURAL VIBRATION , TRANSPORT AIRCRAFT , VIBRATIONAL SPECTRA ,

  • NASA-LLIS-0502 

    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 National Transonic Facility (NTF) is a transonic wind tunnel primarily intended to provide a high Reynolds Number test capability for aerodynamic research and the ...
    Subject(s) : Facilities , Safety & Mission Assurance , Test Facility ,

  • NASA-HDBK-5010 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;2005
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: PURPOSE
    Fracture control is implemented to significantly reduce the risk of a catastrophic failure for a prescribed service period due to propagation of undetected pre-existing crack-like defects (flaws). (NOTE: If ...

  • NASA-LLIS-0289 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;1993
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: Abstract:
    Although shuttle astronauts observed Magellan solar panel deployment, a microswitch failed to provide a "panels-latched" indication. Ensure that telemetry transducers measure the desired ...
    Subject(s) : Flight Equipment , Safety & Mission Assurance , Spacecraft ,

  • NASA-LLIS-1325 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;2002
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: Description of Driving Event:
    Unclear what the PD did to the hardware due to lack of communication and/or inadequate documentation provided to KSC project management. Numerous KSC PRACA reports were ...
    Subject(s) : Human Factors , Independent Verification and Validation , Payloads , Policy & Planning ,

  • NACA-RM-L8K19 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;1949
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: INTRODUCTION
    The spoiler type of control device has been proposed in reference 1 as a means of lateral control for sweptback wings. All of the spoiler configurations reported in reference however, had some of the ...

  • NACA-TM-1003 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;1942
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: The resistance coefficients of commercial types of round wire grids were examined for the purpose of obtaining the necessary data on supercharger test stands for throttling the inducted air to a pressure corresponding to ...

  • NASA-LLIS-0352 

    Type: standard
    Source: NASA - National Aeronautics and Space Administration (NASA):;1994
    Organization : NASA - National Aeronautics and Space Administration (NASA)
    Abstract: Abstract:
    During thermal-vacuum testing of Wide-Field/Planetary Camera, the sensitivity of the charge coupled device detectors decreased due to contamination. It was concluded that the standard criteria ...
    Subject(s) : Environment , Spacecraft , Standard ,

  • NASA-LLIS-0150 

    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 QD/filter assemblies are designed to provide a disconnect interface and remove all solid particles (exceeding 25 microns) from the servicing fluids at various system ...
    Subject(s) : Hardware ,

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