Accession Number : ADA017691

Title :   Automatic Control of Submarine Depth, Pitch and Trim.

Descriptive Note : Master's thesis,


Personal Author(s) : Drurey,Harold Leroy

Report Date : SEP 1975

Pagination or Media Count : 131

Abstract : A computer program for simulating submarine motion in six degrees of freedom is developed. The simulated submarine is given a capability of shifting ballast. An automatic pitch and depth control is designed for the submarine simulated using optimal control theory. With the depth and pitch in automatic control a trim error signal is developed by comparing the parameters of the plant to that of a linearized model. This error is used to implement an automatic trim control that shifts ballast within the submarine to achieve a neutral trim.

Descriptors :   *Submarines, *Control systems, Automatic, Control theory, Computerized simulation, Trim tabs, Theses

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE