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There are a total of 515904 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Supersonic Flutter of a Cylindrical Shell with Application to the Centaur Interstage Adapter
Author(s): Mitchell, R. R.
Abstract: Analytic solution to flutter boundaries of circular cylindrical shell subjected to supersonic flow with application to Centaur interstage adapter
NASA Center: NASA (non Center Specific)
Publication Year: 1963
Added to NTRS: 2008-09-11
Accession Number: 66N19451; Document ID: 19660010162; Report Number: AY-62-0069, NASA-CR-54542
NASA Langley's AirSTAR Testbed: A Subscale Flight Test Capability for Flight Dynamics and Control System Experiments
Author(s): Jordan, Thomas L.; Bailey, Roger M.
Abstract: As part of the Airborne Subscale Transport Aircraft Research (AirSTAR) project, NASA Langley Research Center (LaRC) has developed a subscaled flying testbed in order to conduct research experiments in support of the goals of ...
NASA Center: Langley Research Center
Publication Year: 2008
Added to NTRS: 2008-09-11
Document ID: 20080034482; Report Number: AIAA-2008-6660
Advanced Unstructured Grid Generation for Complex Aerodynamic Applications
Author(s): Pirzadeh, Shahyar Z.
Abstract: A new approach for distribution of grid points on the surface and in the volume has been developed and implemented in the NASA unstructured grid generation code VGRID. In addition to the point and line sources of prior work, ...
NASA Center: Langley Research Center
Publication Year: 2008
Added to NTRS: 2008-09-11
Document ID: 20080034484
A Statistical Filtering Approach for Gravity Recovery and Climate Experiment (GRACE) Gravity Data
Author(s): Davis. J. L.; Tamisiea, M. E.; Elosegui, P.; Mitrovica, J. X.; Hill, E. M.
Abstract: We describe and analyze a statistical filtering approach for GRACE data that uses a parametrized model for the temporal evolution of the GRACE coefficients. After least-squares adjustment, a statistical test is performed to ...
NASA Center: Goddard Space Flight Center
Publication Year: 2008
Added to NTRS: 2008-09-11
Document ID: 20080034474
Dynamic and Regression Modeling of Ocean Variability in the Tide-Gauge Record at Seasonal and Longer Periods
Author(s): Hill, Emma M.; Ponte, Rui M.; Davis, James L.
Abstract: Comparison of monthly mean tide-gauge time series to corresponding model time series based on a static inverted barometer (IB) for pressure-driven fluctuations and a ocean general circulation model (OM) reveals that the ...
NASA Center: Goddard Space Flight Center
Publication Year: 2007
Added to NTRS: 2008-09-11
Document ID: 20080034471
Cloud Condensation Nuclei Prediction Error from Application of Kohler Theory: Importance for the Aerosol Indirect Effect
Author(s): Sotiropoulou, Rafaella-Eleni P.; Nenes, Athanasios; Adams, Peter J.; Seinfeld, John H.
Abstract: In situ observations of aerosol and cloud condensation nuclei (CCN) and the GISS GCM Model II' with an online aerosol simulation and explicit aerosol-cloud interactions are used to quantify the uncertainty in radiative ...
NASA Center: Goddard Space Flight Center
Publication Year: 2007
Added to NTRS: 2008-09-11
Document ID: 20080034467
An Analytical Thermal Model for Autonomous Soaring Research
Author(s): Allen, Michael
Abstract: A viewgraph presentation describing an analytical thermal model used to enable research on autonomous soaring for a small UAV aircraft is given. The topics include: 1) Purpose; 2) Approach; 3) SURFRAD Data; 4) Convective ...
NASA Center: Dryden Flight Research Center
Publication Year: 2006
Added to NTRS: 2008-09-11
Document ID: 20060024599
Ion Temperature Control of the Io Plasma Torus
Author(s): Delamere, P. A.; Schneider, N. M.; Steffl, A. J.; Robbins, S. J.
Abstract: We report on observational and theoretical studies of ion temperature in the Io plasma torus. Ion temperature is a critical factor for two reasons. First, ions are a major supplier of energy to the torus electrons which ...
NASA Center: Goddard Space Flight Center
Publication Year: 2005
Added to NTRS: 2008-09-11
Document ID: 20080034522; Report Number: Poster 60.13
Future Climate Impacts of Direct Radiative Forcing Anthropogenic Aerosols, Tropospheric Ozone, and Long-lived Greenhouse Gases
Author(s): Chen, Wei-Ting; Liao, Hong; Seinfeld, John H.
Abstract: Long-lived greenhouse gases (GHGs) are the most important driver of climate change over the next century. Aerosols and tropospheric ozone (O3) are expected to induce significant perturbations to the GHG-forced climate. To ...
NASA Center: Goddard Space Flight Center
Publication Year: 2007
Added to NTRS: 2008-09-11
Document ID: 20080034469
Efficient Unstructured Grid Adaptation Methods for Sonic Boom Prediction
Author(s): Campbell, Richard L.; Carter, Melissa B.; Deere, Karen A.; Waithe, Kenrick A.
Abstract: This paper examines the use of two grid adaptation methods to improve the accuracy of the near-to-mid field pressure signature prediction of supersonic aircraft computed using the USM3D unstructured grid flow solver. The ...
NASA Center: Langley Research Center
Publication Year: 2008
Added to NTRS: 2008-09-11
Document ID: 20080034485; Report Number: AIAA-2008-7327
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