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.


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    Title :

    A method of predicting quasi-steady aerodynamics for flutter analysis of high speed vehicles using steady CFD calculations


    Additional title:

    Eine Methode zur Voraussage quasi-stationärer Aerodynamik über Instabilitätsanalysen von Hochgeschwindigkeitsflugzeugen mittels der Bewertung der rechnerischen Dynamik flüssiger Körper


    Contributors:


    Publication date :

    1993


    Size :

    9 Seiten, 10 Bilder, 3 Tabellen, 5 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English