How do I use my Kt/Kq model test data?
You can enter and save Kt and Kq versus J data from your propeller model tests or wake-adapted calculations. These simple ASCII files are then used as the source of propeller performance for Propulsion calculations. NavCad even properly applies scale correction during the calculations. New to NavCad in 2005 is the propeller Aligned series prediction, which correlates a series prediction to a user-defined Kt/Kq file. This allows the user to alter the series’ prediction based on the performance of the model. The resulting Kt/Kq figures reflect the qualitative “shape” of the underlying series, with a quantitative correction derived from the propeller model.
