Chebyshev Fitting Way and Error Analysis for Propeller Atlas across Four Quadrants

A Chebyshev fitting way for a propeller atlas across four quadrants is discussed. As an example, Chebyshev polynomialfitting results and its error analysis are given. Because it's difficult generally to get a propeller atlas across four quadrants,a wayis used to construct an alternative with higher accuracy based on the properties. As an application example, an alternative forthe propeller property of a Deep Submergence Vebicle across four quadrants is given practically and a simulation model of the

Chebyshev fitting way and error analysis for propeller atlas across four quadrants

A Chebyshev fitting way for a propeller atlas across four quadrants is discussed . As an example, Chebyshev polynomial filling results and its error analysis are given. Because it's difficult generally to get a propeller atlas across four quadrants, a way is used to construct an alternative with higher accuracy based on the properties . As an application example, an alternative for the propeller properly of a Deep Submergence Vehicle across four quadrants is given practically and a simulation model of the four quadrants propeller for dynamic condition is set up. The model lays a foundation for DSV full operating- condition movement simulation. A lot of simulation work shows that the results are very close to the practical data and, therefore, are effective.