Aerodynamic interaction between an aerofoil and a freeboard superstructure. Southampton, UK, University of Southampton, 41pp.
(Ship Science Reports, 31).
A description is given of an investigation into the airloads generated (1) by an isolated freeboard/superstructure (2) by isolated aerofoils and (3) by a combination of freeboard/superstructure and aerofoils. A formula is derived to describe the airloads on an isolated freeboard/superstructure, which compares favourably with test data. This is of interest for calculating ship air resistance. Airloads due to the interaction airflow between an aerofoil and superstructure are found to be propulsive. The variation of interaction airloads with varying freeboard and aerofoil/deck gap are described.
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