초록 ▼

Wingsail configurations for multi element wingsails for maintaining full stall for maximum speed in running downwind in which the trailing edges of at least a pair of flap elements of a multi element structure are maintained in the convergent configuration so that in the deflected position of the fl

Wingsail configurations for multi element wingsails for maintaining full stall for maximum speed in running downwind in which the trailing edges of at least a pair of flap elements of a multi element structure are maintained in the convergent configuration so that in the deflected position of the flap there is a leeward progression to deeper stalling.

대표청구항 ▼

A wingsail arrangement comprising a plurality of thrust wings each of which comprises an upright leading airfoil having a leading edge and a trailing edge and an upright trailing airfoil having a leading edge and a trailing edge the leading edge of the trailing airfoil being positioned closely behin

A wingsail arrangement comprising a plurality of thrust wings each of which comprises an upright leading airfoil having a leading edge and a trailing edge and an upright trailing airfoil having a leading edge and a trailing edge the leading edge of the trailing airfoil being positioned closely behind the trailing edge of the leading airfoil and means for mounting the trailing airfoil for pivoting movement about an upright axis relative to the first airfoil from an aligned position in which the trailing airfoil is aligned coplanar with the leading airfoil to positions to each side of an angularly displaced from the aligned position, and means for maintaining a lesser distance between the trailing edges of at least a pair of trailing airfoils of said plurality of thrust wings than between the leading edges of said pair.