Abstract
In addition to the Pneumobil competition, our team will also participate in the Shell Eco-marathon with an electric-powered prototype category car. Based on our results so far, we are in the midfield of European competitions. After several modifications to our current car, we will be building a new car again in 2022. The goal of building eco-marathon racing cars is to achieve the lowest possible energy consumption, and accordingly, great emphasis should be placed on reducing weight and drag coefficient.Our previous cars used a welded aluminum frame and fiberglass. One of the best ways of weight reduction would be a self-supporting, carbon-fiber composite frame structure; however, the team does not currently have the technology to produce this. The frame structure of the new car consists of carbon fiber composite tubes, the nodes are 3D printed, fiber-reinforced composite elements. The streamlined casing of the vehicle consists of vacuum formed PETG elements. By using this structure, the total weight can be radically reduced at minimal cost. In our publication, we describe the main steps in the design of the casing and frame structure, finite element analysis of air resistance and deformations, and the drive chain.
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