1–20 von 114 Ergebnissen
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    USM3D Simulations for the Third AIAA Sonic Boom Prediction Workshop

    Alaa Elmiligui / Mohagna J Pandya / Melissa B Carter et al. | NTRS | 2022
    The NASA USM3D flow solver was used to compute test cases for the Third AIAA Sonic Boom Prediction Workshop (SBPW3). The test cases ...
    Verlag: American Institute of Aeronautics and Astronautics

    Jig-Shape Optimization of a Low-Boom Supersonic Aircraft

    Pak, Chan-Gi | NTRS | 2018
    problem and applied to a low-boom supersonic aircraft. In this study, the jig-shape optimization is performed using the two-step approach. First ...
    Verlag: AIAA
    Schlagwörter: Aircraft Design, Testing And Performance

    Multidisciplinary Design Optimization of Low-Boom Supersonic Aircraft with Mission Constraints

    Wu Li / Karl Geiselhart | NTRS | 2020
    Conceptual design of low-boom supersonic aircraft is heavily dictated by aircraft volume and lift distributions. These unique design ...
    Verlag: American Institute of Aeronautics and Astronautics
    Schlagwörter: Aircraft conceptual design , Aircraft Design, Testing And Performance

    Creating a Test-Validated Finite-Element Model of the X-56A Aircraft Structure

    Pak, Chan-Gi / Truong, Samson | NTRS | 2014
    Testbed aircraft is the flight demonstration of active flutter suppression and, therefore, in this study, the identification of the primary and ...
    Verlag: AIAA
    Schlagwörter: multi-utility technology test bed aircraft

    Workshop report for the AIAA 5th Aeroacoustics Conference

    Goldstein, M. E. | NTRS | 1980
    Summaries of current understandings, technological tools and remaining controversies in the field of aeroacoustics are presented, with ...

    Flutter testing of modern aircraft

    Johnson, Jeff | NTRS | 1989
    Structural dynamicists avoid aircraft structural flutter through the use of flutter analyses, wind tunnel tests, ground-vibration tests ...
    Schlagwörter: Aircraft Design, Testing And Performance

    Flight testing of unique aircraft configurations

    Painter, W. D. | NTRS | 1983
    Some historical developments of flight testing of unique aircraft configurations by NASA and the military sector are documented. Several ...
    Schlagwörter: Aircraft Design, Testing And Performance

    What Was Learned in Predicting Slender Airframe Aerodynamics with the F-16XL Aircraft

    Rizzi, Arthur / Luckring, James M. | NTRS | 2016
    set obtained with the F-16XL aircraft for comparison and validation. These conditions, a low-speed high-angle-of-attack case and a transonic ...

    Response of a rigid aircraft to nonstationary atmospheric turbulence.

    Verdon, J. M. / Steiner, R. | NTRS | 1973
    The plunging response of an aircraft to a type of nonstationary turbulent excitation is considered. The latter consists of stationary ...
    Schlagwörter: Aircraft

    Vortex interactions and decay in aircraft wakes

    Bilanin, A. J. / Teske, M. E. / Williamson, G. G. | NTRS | 1977
    The dynamic interactions of aircraft wake vortices are investigated using both inviscid and viscous models. The phenomenon of vortex ...

    Second derivatives of the flutter velocity and the optimization of aircraft structures.

    Rudisill, C. S. / Bhatia, K. G. | NTRS | 1972
    partial derivatives of the flutter velocity of an aircraft structure with respect to the structural parameters are derived. These partial ...

    Active control of interior noise in model aircraft fuselages using piezoceramic actuators

    Fuller, C. R. / Snyder, S. D. / Hansen, C. H. et al. | NTRS | 1992

    Structural Response of a Stitched Composite Hybrid Wing Body Center Section

    Dawn C Jegley / Adam Przekop / Andrew E Lovejoy et al. | NTRS | 2021
    Verlag: AIAA

    Multiobjective Multidisciplinary Optimization of Low-Boom Supersonic Transports Using Multifidelity Models

    Wu Li / Karl Geiselhart | NTRS | 2021
    configuration that can be obtained from a Pareto solution of a low-fidelity multiobjective MDO problem with mission constraints. This paper refines the ...
    Verlag: AIAA

    Experimental Verification of Buffet Calculation Procedure Using Unsteady Pressure-Sensitive Paint

    Panda, J. | NTRS | 2017
    Typically, a limited number of dynamic pressure sensors is employed to determine the unsteady aerodynamic forces on large, slender ...
    Verlag: AIAA

    System Identification for Propellers at High Incidence Angles

    Benjamin M Simmons | NTRS | 2021
    Propellers used for electric vertical takeoff and landing (eVTOL) aircraft propulsion systems experience a wide range of aerodynamic ...
    Verlag: AIAA
    Schlagwörter: Aircraft Stability And Control

    Unsteady Aerodynamic Force Sensing from Strain Data

    Pak, Chan-Gi | NTRS | 2017
    deflection and slope of the structure are computed from the unsteady strain using the two-step approach. Velocities and accelerations of the ...
    Verlag: AIAA
    Schlagwörter: Avionics And Aircraft Instrumentation

    Characterization of Slat Noise Radiation from a High-Lift Common Research Model

    William M Humphreys, Jr / David P Lockard / Christopher J Bahr | NTRS | 2023
    A test campaign was conducted in the open-jet test section of the NASA Langley 14- by 22-Foot Subsonic Tunnel on a 10%-scale, semispan ...
    Verlag: American Institute of Aeronautics and Astronautics
    Schlagwörter: Aircraft Components and Structure , Aircraft Wing Components

    Effect of High-Fidelity Ice Accretion Simulations on the Performance of a Full-Scale Airfoil Model

    Broeren, Andy P. / Bragg, Michael B. / Addy, Harold E., Jr. et al. | NTRS | 2010
    The simulation of ice accretion on a wing or other surface is often required for aerodynamic evaluation, particularly at small scale or low ...