Hydrodynamic appendage such as a keel or a centerboard, and a method of fabrication
AssigneeSafran
InventorsSandra ANDRIEU, Jean-Michel DE MONICAULT
Life of this patent
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Abstract
A method of fabricating a hydrodynamic appendage for a ship, the method including the steps of: forming two metal half-shells having outside surfaces that form the flanks of a hydrodynamically-active portion of the appendage; forming a metal head including a mechanism for securing the appendage to the ship; and assembling together the half-shells and the head so that the head is sandwiched between the top ends of the two half-shells and closes a top portion of an internal volume defined by the half-shells. The half-shells are welded to the head so as to make the internal volume watertight.
Claims13
A method of fabricating a hydrodynamic appendage for a ship, the method comprising the steps of:
- forming two metal half-shells having outside surfaces that form the flanks of a hydrodynamically-active portion of the appendage;
- forming a metal head including means for securing the appendage to the ship;
- and
- assembling together the half-shells and the head in such a manner that the head is sandwiched between the top ends of the two half-shells and so as to form an internal volume between the two half-shells, the assembly formed by the head sandwiched between the two half-shells being welded together so as to make the internal volume of the appendage watertight.
A hydrodynamic appendage for a ship, the appendage comprising:
- two metal half-shells having outside surfaces forming the flanks of a hydrodynamically-active portion of the appendage;
- and
- a metal head including means for securing the appendage to the ship;
- the half-shells and the head being assembled together in such a manner that the head is sandwiched between the top ends of the two half-shells and in such a manner as to form an internal volume between the two half-shells, the assembly formed by the head sandwiched between the two half-shells being welded so as to make the internal volume of the appendage watertight.
Dependencies are inferred from the claim text.