A study of the available methods for transonic airfoil and wing design indicates that the most powerful technique is the numerical optimization procedure. However, the computer time for this method is relatively large because of the amount of computation required in the searches during optimization. The optimization method requires that 'base' and 'calibration' solutions be computed to determine a 'minimum drag' direction. The design space is then computationally searched in this direction; it is these searches that dominate the computation time. A recent similarity theory allows certain transonic flows to be calculated rapidly from the base and calibration solutions. In this paper the application of the similarity theory to design problems is examined with the object of at least partially eliminating the costly searches of the design optimization method. An example of an airfoil design is presented. (Kursetz)
Design of transonic airfoil sections using a similarity theory
Entwurf eines transsonischen Tragfluegelprofils unter Anwendung einer Aehnlichkeitstheorie
AIAA-Papers ; Han ; 1-7
1979
7 Seiten, 4 Bilder, 1 Tabelle, 16 Quellen
Aufsatz (Konferenz)
Englisch
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