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  • 1
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    A method of predicting quasi-steady aerodynamics for flutter analysis of high speed vehicles using steady CFD calculations (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: High speed linear aerodynamic theories like piston theory and Newtonian impact theory are relatively inexpensive to use for flutter analysis. These theories have limited areas of applicability depending on the configuration and the flow conditions. In addition, these theories lack the ability to capture viscous, shock and real gas effects. CFD methods can model all of these effects accurately, but the unsteady calculations required for flutter are expensive and often impractical. This paper describes a method for using steady CFD calculations to approximate the generalized aerodynamic forces for a flutter analysis. Example two-and three-dimensional aerodynamic force calculations are provided. In addition, a flutter analysis of a NASP-type wing will be discussed.
    Keywords: AERODYNAMICS
    Type: AIAA PAPER 93-1364 , In: AIAA(ASME)ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 34th and AIAA/ASME Adaptive Structures Forum, La Jolla, CA, Apr. 19-22, 1993, Technical Papers. Pt. 1 (A93-33876 1; p. 595-603.
    Format: text
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  • 2
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    Determining design gust loads for nonlinear aircraft similarity between methods based on matched filter theory and on stochastic simulation (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: This is a work-in-progress paper. It explores the similarity between the results from two different analysis methods - one deterministic, the other stochastic - for computing maximized and time-correlated gust loads for nonlinear aircraft. To date, numerical studies have been performed using two different nonlinear aircraft configurations. These studies demonstrate that results from the deterministic analysis method are realizable in the stochastic analysis method.
    Keywords: AERODYNAMICS
    Type: AIAA PAPER 92-2369 , AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference; Apr 13, 1992 - Apr 15, 1992; Dallas, TX; United States
    Format: text
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