26th Congress of International Council of the Aeronautical Sciences
including the 8th AIAA Aviation Technology, Integration, and Operations (ATIO) Conference
14 - 19 September 2008, Anchorage, Alaska, USA
Paper ICAS 2008-3.4.1

FIN BUFFET CHARACTERISTICS OF ADVANCED TRAINER AIRCRAFT

C. Breitsamter, A. Schmid, J. U. Klar, R. Reß
TU Munich, Germany

Keywords: Vortex flows, high agility aircraft, fin buffet, unsteady aerodynamic loads

The investigations focus on the fin buffet characteristics of advanced fighter aircraft associated with vortex shedding and bursting. Wind tunnel tests are conducted including unsteady flow field and fin pressure measurements. Turbulence intensity and spectral distributions are evaluated to analyze the flow physics involved and to quantify unsteady aerodynamic loads.

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