Accession Number:

ADA073821

Title:

New Concepts in Ship Directional Control,

Descriptive Note:

Corporate Author:

RHODE ISLAND UNIV KINGSTON DEPT OF OCEAN ENGINEERING

Personal Author(s):

Report Date:

1979-05-14

Pagination or Media Count:

12.0

Abstract:

A new propulsion system for ships has been discussed in Sheets 1978. This propulsion system provides a source of pressurized water between the pump and the turbine of the hydraulic transmission and generates a water jet leaving the transmission turbine. The water jet leaving the transmission turbine can be vectored by means of discharge vanes so that it is possible to greatly improve the directional controllability of ships. Several configurations are possible for the proposed control system, but at this time, only a single configuration is presented. The thrust force of the jet leaving the hydraulic transmission can be adjusted and modulated to meet requirements. For maximum ship control, the quantity of flow and power into the transmission can be increased compared to power transmitted to the propeller. This new control system should make it possible to reduce the size or eliminate ship control surfaces entirely, resulting in a small reduction of total drag and increase of ship speed. Author

Subject Categories:

  • Marine Engineering
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE