Experimental analysis of the flow field over an aeroelastic flexible wind tunnel model for tail buffeting analysis

Modern high-agility aircraft are often affected by the consequences of tail buffeting effects at medium to high angles of attack. High pressure fluctuations with distinct frequency contents characterize the flow field downstream of the vortex breakdown and are responsible for the dynamic structural response. For analyzing the flow field and the frequency content of the pressure fluctuations over a modular full-span wind tunnel model with either rigid or flexible double-delta wings and horizontal and vertical tailplanes, stereoscopic particle image velocimetry measurements and measurements with a fast-response aerody- namic pressure probe are performed. When comparing the rigid and flexible configurations, significant differences in the axial vortex core velocities in some measurement planes can be detected, while the power spectral densities of the pressure fluctuations show similar characteristics with slight differences in the amplitudes.     «

Modern high-agility aircraft are often affected by the consequences of tail buffeting effects at medium to high angles of attack. High pressure fluctuations with distinct frequency contents characterize the flow field downstream of the vortex breakdown and are responsible for the dynamic structural response. For analyzing the flow field and the frequency content of the pressure fluctuations over a modular full-span wind tunnel model with either rigid or flexible double-delta wings and horizo...     »