| Abstract [eng] |
The master's thesis analyzes the history of wind-powered rotary vehicles, the main patents that have influenced the development of this sector and the main technological outbursts that have influenced the growth of the efficiency of these vehicles. The main components of a wind-powered rotary vehicle, their positives and negatives are discussed. Two different variants of the movement of a wind-powered land vehicle were analyzed: upwind and downwind. The wheel speed at the speed, rolling and aerodynamic drag of a given vehicle model is calculated. The efficiency of the propeller was calculated, and a theoretical study was performed to find out what conditions the model needs to achieve higher than the wind speed in three different cases: when the model moves to wind speed, wind speed, above wind speed. Three different calculations were performed to obtain the initial parameters of a wind-powered rotary vehicle that would allow the wind speed to be exceeded. In the design of a wind-powered rotary vehicle, theoretical calculations were performed to determine the balances of net forces and drag forces, based on which the graphs describing the maximum achievable speeds of two different models at certain parameters were drawn. Two different models were designed, the differences of their components and the main parameters were compared in detail, a layout of one of the model details was made, and the choice of details was based. An adjustable pitch propeller was designed to make more efficient use of the available tools to implement the experiment. An experimental study was conducted to determine the ability of the designed models to exceed the wind speed. A conclusion has been reached on the ability of wind-powered rotary land vehicles to develop wind speeds higher than those driving them. The results of theoretical and experimental research are analyzed and conclusions are drawn about their results. |
