초록 ▼

A combined, liner retainer and seal for use with hydrofoils in which fluid foils have trailing control flaps, keyed together. The control flaps are hingedly engaged to the trailing end of the foils and are rotated on the hinge for control purposes. The flaps are segmented to form a series and in eac

A combined, liner retainer and seal for use with hydrofoils in which fluid foils have trailing control flaps, keyed together. The control flaps are hingedly engaged to the trailing end of the foils and are rotated on the hinge for control purposes. The flaps are segmented to form a series and in each pair a key extends from a driving flap into a keyway in a driven flap so that the flaps are rotatable together. There is an elastic liner within the keyways and into which the key fits, the liner serving to protect the metallic surfaces of the keys and keyways. The combined seal and retainer extends between the flaps from the trailing end of the foil to the trailing edge of the flaps and has openings through which a hinge pin and the key extends. The retainer is elastic and holds the liner within the keyway so as to prevent its dislodgment and destruction. Spaces between the flaps permit pressure blend therethrough and because there are a considerable number of driver to driven flap interfaces, the negative effects of resulting cavitation flow are cumulative. The seal substantially inhibits the pressure bleed between the flaps so as to greatly reduce cavitating and/or separating flow. In another embodiment the retainer/seal and liner are combined into one part.

대표청구항 ▼

In a fluid foil having a plurality of trailing control flaps, or the like, hingedly engaged to the foil for rotation with respect thereto, at least one of said flaps being a driving flap and at least one of said flaps being a driven flap, a key extending from said driving flap into a keyway in said

In a fluid foil having a plurality of trailing control flaps, or the like, hingedly engaged to the foil for rotation with respect thereto, at least one of said flaps being a driving flap and at least one of said flaps being a driven flap, a key extending from said driving flap into a keyway in said driven flap so that said flaps rotate together with respect to said foil, an elastic liner being fitted into said keyway and being fitted on said key to protect surfaces of the key and keyway, the improvement comprising: retainer means between said driving and driven flaps in association with said key and keyway to secure said liner in said association with said key and keyway.