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by reaperman
1017 days ago
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> The main reason fuel is required to maintain speed on a flat surface is overcoming air resistance. Yeah, 200 horsepower's worth. Wind resistance at semi-truck highway speeds is very significant. Multiply the numbers here[0] by 9.5x to convert from BMW to Semi-Truck (accounts for increase in Cd and frontal area). So semi trucks might take on the order of 180hp at the wheel just to maintain speed. With drivetrain losses you'd need to be generating 200hp. 0: https://www.e31.net/resistance.html |
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