Patent ID: 7494093
Filing Date: 2009-02-24
Classification: B63H,B64C

Abstract:
1. A propulsive wing ( 10 ) having a negative dihedron for towing a load, comprising a flexible canopy ( 12 ) which is defined between two lateral ends ( 14 A, 14 B) which are connected to each other, at the front, by a leading edge ( 20 ) and, at the rear, by a trailing edge ( 22 ), the canopy ( 12 ) having, between those two lateral ends ( 14 A, 14 B), a propulsive central region ( 16 ) bordered at one side and the other by two control regions ( 18 A, 18 B), the wing comprising at least a suspension member ( 30 A, 30 B) for suspending the load adjacent to each lateral end ( 14 A, 14 B) and auxiliary maintenance means ( 32 ) which are capable of flattening the propulsive central region ( 16 ) adjacent to the leading edge ( 20 ) during flight, further comprising rear lines ( 40 A, 40 B) connected to the suspension members ( 30 A, 30 B) arranged at the lateral ends ( 14 A, 14 B) of the wing, the auxiliary maintenance means ( 32 ) of the propulsive central region ( 16 ) comprising at least a front line ( 34 A, 34 B) which is connected by one end to the propulsive central region adjacent to the leading edge ( 20 ) and which is capable of being connected to the load at the other end thereof, each front line ( 34 A, 34 B) comprising an assembly of shroud lines ( 36 A, 36 B ; 90 A, 90 B) applied to the propulsive central region ( 16 ) at locations which are distributed over the length of the leading edge ( 20 ), at least one sliding shroud line ( 60 A, 90 B) being engaged in a sliding manner in a guide ( 92 A, 92 B) which is fixedly joined to the leading edge ( 20 ), the end of the sliding shroud line ( 90 A, 90 B) being fixedly joined to a rear line ( 40 A, 40 B).