Investigation of tailplane stall for a generic transport aircraft configuration

Grote, Arne; Radespiel, Rolf

doi:10.1007/978-3-540-33287-9_7

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2006

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Cited by 2 publications

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2006

44th AIAA Aerospace Sciences Meeting and Exhibit

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A generic wind tunnel model for tailplane stall investigations was designed to establish an experimental database for code validation. The configuration is numerically optimised to obtain large Reynolds numbers at the horizontal tailplane in a wind tunnel of limited size. It consists of a fuselage, a detachable horizontal stabiliser and a tip-truncated wing, that mounts the model at the turntables of the closed test section. Fuselage and wing are used to create representative downwash conditions in the tailplane region inside the wind tunnel, compared to free-flight. The tests were conducted at a freestream Mach number of 0.16 and at a Reynolds number based upon the mean tailplane chord of 0.72 • 10 6. Tailplane stall with natural and fixed transition is visualised by tufts and oil-flow. In case of natural transition, pressure measurements and Particle Image Velocimetry in the area of turbulent trailing-edge separation provide qualitative data for the validation of numerical simulation approaches. First numerical simulations, using an unstructured Reynolds-averaged Navier Stokes Code, are in good agreement with the experiments. They show a separation of the boundary layer starting at the trailing edge with high crossflow velocities at the outer tailplane. Depending on the boundary-layer transition, the stall occurs abruptly for natural transition, initialised by a burst of a laminar separation bubble, or gradually for fixed transition. A deflected elevator shifts flow separation towards lower incidence angles of the tailplane without changing the process of flow separation.

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Investigation of tailplane stall for a generic transport aircraft configuration

Cited by 2 publications

References 1 publication

Studies on Tailplane Stall for a Generic Transport Aircraft Wind Tunnel Model

Studies on Tailplane Stall for a Generic Transport Aircraft Wind Tunnel Model

Studies on Tailplane Stall for a Generic Transport Aircraft Configuration

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