A DIGITAL COMPUTER TECHNIQUE FOR PREDICTION OF STANDARD MANEUVERS OF SURFACE SHIPS
2006
Strom-Tejsen, J.
The report presents a computer program for the solution of a mathematical model representing the motion of a surface ship, giving predictions of steering and maneuvering qualities. The nonlinear mathematical model based on a third-order Taylor expansion of forces and moments in the equations of motion is reviewed. The hydrodynamic derivatives representing the input to the program can be obtained from present captive model testing techniques. Any motion of a surface ship including tight maneuvers and loop phenomenon recognized in the spiral maneuver for a directional unstable ship should be predictable with accuracy. The computer program which gives predictions for the 'Standard Maneuvers,' turning circles, zig-zag, and spiral maneuver, is described, and results of sample calculations are included. An instruction for preparation of input data for the program, samples of the computer results, and the FORTRAN listing of the computer program are also given.
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