1–17 of 17 hits
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    Aerodynamic Performance of an Active Flow Control Configuration Using Unstructured-Grid RANS

    Joslin, Ronald D. / Viken, Sally A. | NTRS | 2001
    discontinuities at the leading edge due to the implementation of a fluidic actuator and aft of mid chord oil the upper surface. This paper documents two ...
    Publisher: American Institute of Aeronautics and Astronautics

    A Generic Guidance and Control Structure for Six-Degree-of-Freedom Conceptual Aircraft Design

    Cotting, M. Christopher / Cox, Timothy H. | NTRS | 2005
    A control system framework is presented for both real-time and batch six-degree-of-freedom simulation. This framework allows stabilization ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Cybernetics, Artificial Intelligence And Robotics

    A Generic Inner-Loop Control Law Structure for Six-Degree-of-Freedom Conceptual Aircraft Design

    Cox, Timothy H. / Cotting, Christopher | NTRS | 2005
    A generic control system framework for both real-time and batch six-degree-of-freedom (6-DOF) simulations is presented. This framework uses ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Cybernetics, Artificial Intelligence And Robotics

    A Quantitative Comparison of Leading-edge Vortices in Incompressible and Supersonic Flows

    Wang, F. Y. / Milanovic, I. M. / Zaman, K. B. M. Q. | NTRS | 2002
    such vortices in incompressible and supersonic flows. The incompressible flow data are obtained in experiments conducted in a low-speed wind ...
    Publisher: NASA National Aeronautics and Space Administration

    Assessment of the Unstructured Grid Software TetrUSS for Drag Prediction of the DLR-F4 Configuration

    Pirzadeh, Shahyar Z. / Frink, Neal T. | NTRS | 2002
    configuration. The paper briefly describes the underlying methodology and summarizes the results obtained on the DLR-F4 transport configuration recently ...
    Publisher: NASA National Aeronautics and Space Administration

    Atmospheric Models for Engineering Applications

    Johnson, Dale L. / Roberts, Barry C. / Vaughan, William W. et al. | NTRS | 2002
    This paper will review the historical development of reference and standard atmosphere models and their applications. The evolution of the ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Meteorology And Climatology

    CFD Support for STS-107 Ascent Investigation

    Rogers, Stuart E. / Gomez, Reynaldo J. / Vicker, Darby et al. | NTRS | 2004
    The research described in this viewgraph presentation investigates the ascent of STS-107 and foam-debris impact, and contributes to ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Fluid Mechanics And Thermodynamics

    Comparison of Numerical Schemes for a Realistic Computational Aeroacoustics Benchmark Problem

    Hixon, R. / Wu, J. / Nallasamy, M. et al. | NTRS | 2004
    both the mean flow and the unsteady waves are simultaneously computed on a fully curvilinear grid from a commercial grid generator. The ...
    Publisher: NASA National Aeronautics and Space Administration

    Compressibility and Leading-Edge Bluntness Effects for a 65 Deg Delta Wing

    Luckring, J. M. | NTRS | 2004
    120 million at subsonic and transonic speeds. The configuration incorporated a systematic variation of the leading edge bluntness. The ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Design, Testing And Performance

    Computation of External Aerodynamics for a Canard Rotor/Wing Aircraft

    Pandya, S. A. / Aftosmis, M. J. | NTRS | 2001
    complete rotation. A Cartesian mesh approach is used to compute the flow field about a configuration with faired-over engine inlet and exhaust that ...
    Publisher: NASA National Aeronautics and Space Administration

    Constraint Force Equation Methodology for Modeling Multi-Body Stage Separation Dynamics

    Toniolo, Matthew D. / Tartabini, Paul V. / Pamadi, Bandu N. et al. | NTRS | 2008
    constraint force methodology and its implementation into the Program to Optimize Simulated Trajectories II (POST2), a widely used trajectory design ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Fluid Mechanics And Thermodynamics

    Implementation of Flow Tripping Capability in the USM3D Unstructured Flow Solver

    Pandya, Mohagna J. / Abdol-Harrid, Khaled S. / Campbell, Richard L. et al. | NTRS | 2006
    normal to a specified surface trip region and computing a function based on the mean flow solution to specify the modified profile of the ...
    Publisher: NASA National Aeronautics and Space Administration

    Implementation of Premixed Equilibrium Chemistry Capability in OVERFLOW

    Olsen, Mike E. / Liu, Yen / Vinokur, M. et al. | NTRS | 2004
    widely used to predict transonic flowfields. The implementation builds on the computational efficiency and geometric generality of the solver. ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Fluid Mechanics And Thermodynamics

    LiveView3D: Real Time Data Visualization for the Aerospace Testing Environment

    Schwartz, Richard J. / Fleming, Gary A. | NTRS | 2006
    This paper addresses LiveView3D, a software package and associated data visualization system for use in the aerospace testing environment ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Fluid Mechanics And Thermodynamics

    Modeling Scramjet Flows with Variable Turbulent Prandtl and Schmidt Numbers

    Xiao, X. / Hassan, H. A. / Baurle, R. A. | NTRS | 2006
    A complete turbulence model, where the turbulent Prandtl and Schmidt numbers are calculated as part of the solution and where averages ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Propulsion And Power

    Statistical Analysis of CFD Solutions from the Drag Prediction Workshop

    Hemsch, Michael J. | NTRS | 2002
    CFD codes. The solutions were obtained by a variety of code developers and users for the June 2001 Drag Prediction Workshop sponsored by the ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Fluid Mechanics And Thermodynamics

    Unsteady Validation of a Mean Flow Boundary Condition for Computational Aeroacoustics

    Hixon, R. / Zhen, F. / Nallasamy, M. et al. | NTRS | 2004
    Publisher: NASA National Aeronautics and Space Administration