An aerodynamic shape optimization technique has been developed for helicopter rotor blades in hover based on a continuous adjoint method on unstructured meshes. For this purpose, the Euler flow solver and the adjoint sensitivity analysis were formulated on the rotating frame of reference. To handle the repeated evaluation of the flow solution and the sensitivity analysis efficiently, the flow and adjoint solvers were parallelized using a domain decomposition strategy. A solution-adaptive mesh refinement technique was adopted to better resolve the tip vortex. Applications were made to the aerodynamic shape optimization of the Caradonna-Tung rotor blade and the UH-60 rotor blade. The results showed that the present method is effective in determining optimum aerodynamic configurations of rotor blades in hover, which require minimum inviscid torque while maintaining the desired thrust level at transonic flight conditions.


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    Titel :

    Aerodynamic shape optimization of hovering rotor blades in transonic flow using unstructured meshes


    Weitere Titelangaben:

    Aerodynamische Optimierung transsonisch umströmter Rotorblätter unter Verwendung unstrukturierter Gitter


    Beteiligte:
    Lee, Sang Wook (Autor:in) / Kwon, Oh Joon (Autor:in)

    Erschienen in:

    AIAA Journal (online) ; 44 , 8 ; 1816-1825


    Erscheinungsdatum :

    2006


    Format / Umfang :

    10 Seiten, 16 Bilder, 19 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch






    Aerodynamic Shape Optimization of Rotor Blades in Hover Using Unstructured Meshes

    Lee, S. W. / Kwon, O. J. / American Helicopter Society | British Library Conference Proceedings | 2004


    Aerodynamic Shape Optimization of Hovering Rotor Blades Using a NLFD Approach

    Tatossian, C. / Nadarajah, S. / Castonguay, P. et al. | British Library Conference Proceedings | 2008


    Aerodynamic Shape Optimization of Hovering Rotor Blades Using a NLFD Approach

    Tatossian, Charles / Nadarajah, Siva / Castonguay, Patrice | AIAA | 2008