Automatic mechanism for preventing cavitation at air fed hydrofoils and flow bodies

摘要

Automatic mechanism for preventing cavitation at hydrofoils and flow bodies fed with air at the surface thereof from air exit openings. Rows of such air exit openings are arranged at locations of greatest excess speed (underpressure) at the foil profile or flow body, and that such rows are coupled with an air admission valve opened by negative pressure in opposition to an adjustable closing force. The closing force is calculated such that the valve opens and admits air from the atmosphere when a predetermined pressure has been attained.