Patent ID: 8857363

Claim:
Hydrofoil arrangement for a hydrofoil craft the hydrofoil arrangement comprising: at least one lifting wing to be fully submerged; at least two struts pivotally disposed on the hydrofoil craft, each strut of said at least two struts being connected to said at least one lifting wing, each said strut being disposed with a respective center of effort of hydrodynamic forces thereof behind a pivot axis of each said strut during forward travel of the hydrofoil craft through a water surface; when the hydrofoil craft, during forward travel, experiences a disturbance in roll-angle resulting in a transverse movement out of equilibrium of the hydrofoil craft relative to the water surface, said at least two struts being constructed for pivoting relative to the hydrofoil craft, when pivoting, said at least two struts actuate at least one means for inducing transverse displacement of the a center of effort of said at least one lifting wing in a direction of the transverse movement of the hydrofoil craft, said at least two struts actuating said at least one means for inducing transverse displacement via a direct mechanical coupling for modifying a transverse distribution of pressure on said at least one lifting wing for rolling the hydrofoil craft back to equilibrium; said direct mechanical coupling including a respective linking device disposed at each said strut, and said at least one means for inducing transverse displacement being ailerons disposed on said at least one lifting wing, and movements of said ailerons being mechanically coupled to rotations of each said strut by said respective linking devices.