Aerodynamic wind propulsion device having bielastic line coupling

摘要

The invention relates to an aerodynamic wind propulsion device, particularly for watercrafts, comprising an aerodynamic wing being connected to a steering unit located below the aerodynamic wing via a plurality of tractive lines, a tractive cable, a first end of the tractive cable being connected to the steering unit and a second end of the tractive cable being connected to a base platform, the aerodynamic wing having an aerodynamic profile which generates an uplift force in the direction of the tractive cable when the airflow direction is about perpendicular to the tractive cable. According to the invention, an aerodynamic wing is provided being coupled to a steering unit located close below the wing via a plurality of tractive lines of different elasticity.

主权项

1. An aerodynamic wind propulsion device, comprising:
an aerodynamic wing (10) being connected to a steering unit (20) located below the aerodynamic wing via a plurality of tractive lines, a tractive cable (40a, b), a first end of the tractive cable being connected to the steering unit (20) and a second end of the tractive cable being connected to a base platform, the aerodynamic wing (10) having an aerodynamic profile which generates an uplift force in the direction of the tractive cable (40a, b) when the airflow direction is about perpendicular to the tractive cable, wherein at least two of said plurality of tractive lines have elastic behavior in a load range occurring in use of the aerodynamic wind propulsion device and the elastic behavior of said at least two tractive lines is different; and wherein at least one of said tractive lines has elastic properties which are different from other tractive lines to effect a deformation of the aerodynamic wing element in a first load condition to produce at least one of the following effects:
to decrease the uplift forces generated by the aerodynamic wing,to increase the air drag generated by the aerodynamic wing and to establish an optimum aerodynamic shape in a second load condition to generate a maximum uplift force and/or minimum air drag by the aerodynamic wing; said at least one tractive line having elastic properties which are different from the other tractive lines is coupled to a section of the aerodynamic wing to effect a deformation of said center section in the first load condition such that the aerodynamic profile in the first load condition has a cross section that is different from an ideal aerodynamic wing cross section.