Abstract
Underwater vehicles with cycloidal propellers are a new invention. It is shown that the vehicle can be controlled in six dimensions and it is easier to keep vehicle's positions and azimuth by setting three cycloidal propellers on it. So its maneuverability is improved. First, a formula is set up based on the experimental results of the cycloidal propeller's pitch ratio varied from 0.2 /spl pi/ to 0.75 /spl pi/ and steering angle from -90 to +90 degrees. The experiments of that cycloidal propeller were made in Harbin Engineering University Towing Tank. Using these experimental results, a simulating calculation is also carried out and is compared with that of the vehicle controlled by other kind of propellers.
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