1–20 von 376 Ergebnissen
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    Lunar Surface Position Determination using Perceived Signal Strength

    Michael Ellis Evans | NTRS
    “Lunar Access Points”. The application of perceived signal strength for surface PD has historically been used in terrestrial systems such as ...
    Verlag: NASA National Aeronautics and Space Administration

    Hydrogen effects on high strength pipeline steels

    Xie, Jeffrey / Yang, Lin / Worthingham, Bob et al. | Tema Archiv | 2009
    High strength pipeline steels are currently being considered for new construction and line extensions for economic reasons. These steels ...
    Verlag: National Assoc. of Corrosion Engineers International , Houston

    The Adhesion Strength of Impact Ice Measured Using a Modified Lap Joint Test

    Work, Andrew H., Jr. / Gyekenyesi, Andrew L. / Kreeger, Richard E. et al. | NTRS | 2018
    Numerous methodologies have been utilized to measure the adhesion strength of impact ice, and the data reported in the literature varies ...
    Verlag: NASA National Aeronautics and Space Administration

    ISRU Soil Mechanics Vacuum Facility: Soil Bin Preparation and Simulant Strength Characterization

    Kleinhenz, Julie / Wilkinson, Allen | NTRS | 2012
    penetrometer was used to measure simulant strength properties at vacuum including: cohesion, friction angle, bulk density and shear modulus. Simulant ...
    Verlag: NASA National Aeronautics and Space Administration

    Behavior of corrosion inhibitor on the new ultra high strength steel

    Quintanilla, H. / Inde, A. / Aguilar, A. et al. | Tema Archiv | 2009
    Electrochemical techniques have been used for investigating the inhibition of new ultra high strength steel grade. This kind of steel has ...
    Verlag: National Assoc. of Corrosion Engineers International , Houston

    High strength modified martensitic stainless steel production tubing for sour wells

    Kopliku, Ardjan / Tabinor, Matthew / Ryde, Jeremy et al. | Tema Archiv | 2009
    partial pressure. The onshore field had a production tubing mechanical requirement of 110 ksi minimum yield strength while the offshore field ...
    Verlag: National Assoc. of Corrosion Engineers International , Houston

    Pyrolysis Rate and Yield Strength Reduction in Carbon Fiber and Glass Fiber Composites under Reentry Heating Conditions

    Benton R Greene / Chris L Ostrom | NTRS
    impact risk is complex. Modern spacecraft are using these materials in ever-greater quantities owing to their superior strength-to ...
    Verlag: NASA National Aeronautics and Space Administration

    Developments in methods for assessing the remaining strength of corroded pipelines

    Chauhan, V. / Espiner, R. / Swankie, T.D. et al. | Tema Archiv | 2009
    start to use higher strength materials there will be an increasing need to assess the integrity of corroded high strength pipelines and to ...
    Verlag: National Assoc. of Corrosion Engineers International , Houston

    Modeling strength data for CREW CHIEF

    Mcdaniel, Joe W. | NTRS | 1990
    , accessibility, strength, hand tool operation, and materials handling. While developing the CREW CHIEF, extensive research was performed to describe ...
    Verlag: NASA National Aeronautics and Space Administration

    Decision behavior with changing signal strength

    Curry, R. E. / Gai, E. G. / Nagel, D. C. | NTRS | 1974
    Verlag: NASA National Aeronautics and Space Administration

    Reliability Based Ultimate Strength Structural Design for Safety

    Moatsos, I. / Das, P.K. / Ethniko Metsovio Polytechneio (Greece) | British Library Conference Proceedings | 2003
    Verlag: National Technical University of Athens , Athens, Greece

    Automating Range Surveillance Through Radio Interferometry and Field Strength Mapping Techniques

    NTRS | 2008
    Verlag: NASA National Aeronautics and Space Administration

    Inter-Individual Variability in Astronaut Strength Response to Long-Duration Spaceflight May Be Dictated by In-Flight Exercise

    Alyssa N. Varanoske / Nicole C. Strock / Elisabeth R. Spector et al. | NTRS
    post-flight isokinetic strength measures shows that strength decreases; however, considerable variability between crewmembers exists. As in ...
    Verlag: NASA National Aeronautics and Space Administration

      Inter-Individual Variability in Astronaut Strength Response to Long-Duration Spaceflight May Be Dictated by In-Flight Exercise

      Alyssa N. Varanoske / Nicole C. Strock / Elisabeth R. Spector et al. | NTRS
      isokinetic strength measures shows that strength decreases; however, considerable variability between crewmembers exists. As in-flight exercise ...
      Verlag: NASA National Aeronautics and Space Administration

    Investigation of Stiffening and Curvature Effects on the Residual Strength of Composite Stiffened Panels with Large Transverse Notches

    Enjuto, Patrick / Walker, Thomas H. / Lobo, Mark et al. | NTRS | 2018
    methods addressing large-notch residual strength of stiffened panels to support preliminary design activities.. ...
    Verlag: NASA National Aeronautics and Space Administration

    Strength Evaluation of a Container Carrier by Direct Load Calculation

    Chung, Y.-S. / Jang, Y.-S. / Yoon, M.-C. et al. | British Library Conference Proceedings | 2003
    Verlag: National Technical University of Athens , Athens, Greece

    Probabilistic constitutive relationships for material strength degradation models

    Boyce, L. / Chamis, C. C. | NTRS | 1989
    In the present probabilistic methodology for the strength of aerospace propulsion system structural components subjected to such ...
    Verlag: NASA National Aeronautics and Space Administration

    Statistical Analysis of Strength Data for an Aerospace Aluminum Alloy

    Neergaard, L. / Malone, T. | NTRS | 2001
    paper discusses statistical trends seen in strength data for one Al alloy. A four-step approach reduced the data to residuals, visualized ...
    Verlag: NASA National Aeronautics and Space Administration

    Improving UV Resistance of High Strength Fibers Used In Large Scientific Balloons

    Said, M. / Gupta, A. / Seyam, A. et al. | NTRS | 2004
    -pressure balloon design. The use of textile structures have already been established in these missions in the form of high strength tendons ...
    Verlag: NASA National Aeronautics and Space Administration

    Rock Hard Science: Multispectral and Mineralogical Investigations to Understand Bedrock Spectral Properties and Strength at Vera Rubin Ridge, Gale Crater, Mars

    Jacob, S. R. / Wellington, D. F. / Bell, J. F. III et al. | NTRS | 2019
    Verlag: NASA National Aeronautics and Space Administration

    Low-noise, high-strength, spiral-bevel gears for helicopter transmissions

    Lewicki, David G. / Handschuh, Robert F. / Henry, Zachary S. et al. | NTRS | 1993
    9310; (2) a higher-strength design the same as the current but with a full fillet radius to reduce gear tooth bending stress (and thus, weight ...
    Verlag: NASA National Aeronautics and Space Administration

      Low-noise, high-strength, spiral-bevel gears for helicopter transmissions

      Lewicki, David G. / Handschuh, Robert F. / Henry, Zachary S. et al. | NTRS | 1993
      9310; (2) a higher-strength design the same as the current but with a full fillet radius to reduce gear tooth bending stress (and thus, weight ...
      Verlag: NASA National Aeronautics and Space Administration