As part of the UK Aerospace Technology Institute funded Agile Wing Integration (AWI) project, the University of Bristol and Airbus UK have performed low-speed wind tunnel tests on a very flexible 2.4m long model wing.

The objective of the tests has been to validate nonlinear aeroelastic predictions of the static and dynamic behaviour of high-aspect-ratio wings by making detailed simultaneous structural and aerodynamic measurements. Static tests have included the measurement of deflections and resulting lift, drag and pressure distributions for different speeds and root angle of attack. Further tests have characterised the dynamic behaviour, including limit cycle oscillations occurring due to geometric nonlinearities and stall.

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