An electricity generator includes a wind tunnel positioned on the vehicle. The wind tunnel has an open first end and an open second end. The open first end is in communication with ambient air. A turbine chamber is fluidly coupled to the open second end of the wind tunnel. At least one wind turbine is positioned in the turbine chamber. The at least one wind turbine includes a housing. A rotor is positioned in the housing along an axis that is substantially perpendicular to an axis of the wind tunnel.

The method is for operating a traction device (3) of a floating vessel (1) that includes a kite (4) having a wing (5) provided with a leading edge (6), a flying line, at least one front line equipped with a clutch, and rear lines, the method includes making the wing (5) gain altitude, holding it only by the flying line, the front and rear lines remaining slack; subsequently, once an altitude has been reached, locking the at least one front line, by activating the clutch, enabling the at least one front line to be mechanically connected to the floating vessel (1); and releasing the flying line and keeping it slack.

This invention provides for a multi-disciplinary energy harnessing mechanism for outfitting a vehicle. Accordingly, sub-systems for harnessing energy from various sources of renewable energy occurring in vicinity of/incidental to the vehicle, such as 5 solar, waste heat, running water, flowing wind, mechanical impacts, heat from the road surface being traversed are integrated into a vehicle whereby the effective range of the vehicle is increased while reducing the frequency and amount of charging otherwise required from the electric grid.

A vehicle has a drive device to move the vehicle and a cooling device to cool the drive device. A duct is arranged to catch air flow striking a front of the vehicle and cool the cooling device with the air flow. A wind power electricity generator is configured to produce power. A control circuit connected to a blanking plate controls the value of the useful cross-section of the duct at least according to an electric power produced by the electricity generator and a speed of the vehicle. The control circuit reduces the useful cross-section of the duct so that the electric power generated by the electricity generator does not exceed a maximum power. The control circuit prevents rotation of the at least one blade when a speed of the air flow in the duct is lower than a threshold minimum speed.