عنوان مقاله [English]
This paper presents the design, fabrication and control of a rigid-wing land yacht. The design of this model, which has been fabricated for the first time in the country, is guided by theory. In general, wind energy provides thrust force for land yachts. Some land yachts use rigid wing instead of soft sail. This wing would generate the main aerodynamic forces that would support and propel the land yacht in a special direction. By adjusting the wing in a proper direction, the land yacht could be moved in a different direction to the wind, even in the opposite direction to the wind. This land yacht is a radio control model that uses two electrical engines for the wing and the steering control mechanism. These two electrical engines are controlled with a four channel radio controller. Regarding the results of present calculations, it is possible to design any size of rigid wing land yacht without any trial and error, as well as reducing the cost of the experiments, which provide the dimensions and dynamic characteristics of the land yachts. Dynamical tests of this model, which are easier than full scale model testing, show that, at true wind speeds of around 10 m/s, the maximum speed of the land yacht exceeds true wind speed by 75\%. Also, at the starting point of the movement, at constant true wind speed, the thrust force will have its maximum value when the true wind angle is equal to 90.