The paper describes a remarkably simple technique for compensating the output of gravity sensing inclinometers for bias errors due to centrifugal accelerations. These inclinometers are commonly used in windtunnel models for measureing angle of attack (AOA). The required accuracy is. 01 deg, which is no problem under static conditions. However, during wind-on aerodynamic excitation of the vibration modes of the model-balance-sting-support combination cause errors due to centrifugal accelerations which can exceed the required accuracy by one or two orders of magnitude. It is shown in the paper that by including a few extra accelerometers in the model, combined with appropriate signal processing, it is possible to compute an accurate compensation in real-time, irrespective of the number of simultaneous modes.
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