Accession Number : AD0781916

Title :   Optimization of Waterjet Propulsion Systems for Surface Effect Ships,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF OCEAN ENGINEERING

Personal Author(s) : Carmichael,A. Douglas ; Johanek,William R.

Report Date : MAY 1974

Pagination or Media Count : 69

Abstract : Water-jet propulsion systems using flush inlets suitable for use on surface effect ships are studied. Equations are developed and incorporated into a computer program which optimizes the system on a least total weight basis. Resistance, displacement, range, speed and other data are used to calculate total propulsion system weight for a number of jet velocity ratios. The system utilizes marine gas turbine engines coupled to multi-stage axial-flow pumps. Variable area flush inlets and constant area nozzles are used. Results for a 2000 ton vessel are presented.

Descriptors :   *Surface effect ships, *Hydraulic jets, *Marine propulsion, Propulsion systems, Mathematical models, Computer programming, Optimization, Gas turbines, Pumps, Axial flow, Nozzles, FORTRAN, Inlets

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE