Abstract: Hydrodynamic duct mounted at the bow of a vessel, comprising a horizontal wall portion (1) and two lateral wall portions (2,3), whereby the flow through the duct acquires substantially different characteristics from the flow outside it and thereby wave making and frictional resistances are reduced and the fuel conventionally required for the propulsion of the vessel is reduced accordingly. The duct is arranged with the Center of Low Pressure (1c) corresponding to a zero angle of attack onto the horizontal wall portion (1) being located in the region of generation of the first bow wave and with the Centers of Low Pressure (2c,3c) of the lateral wall portions (2,3) in the region of connection thereof with the horizontal wall portion (1) being located in a selected position between the Center of Low Pressure (1c) and up to or slightly forwardly the leading edge (1a) of the horizontal wall portion (1).
Type:
Grant
Filed:
July 16, 2012
Date of Patent:
December 8, 2015
Assignee:
MILAN SHIPPING AND INVESTMENT LIMITED
Inventors:
E. Emmanuel Petromanolakis, E. Kalomoira Petromanolakis, E. Evagelos Petromanolakis
Abstract: Hydrodynamic duct mounted at the bow of a vessel, comprising a horizontal wall portion (1) and two lateral wall portions (2,3), whereby the flow through the duct acquires substantially different characteristics from the flow outside it and thereby wave making and frictional resistances are reduced and the fuel conventionally required for the propulsion of the vessel is reduced accordingly. The duct is arranged with the Center of Low Pressure (1c) corresponding to a zero angle of attack onto the horizontal wall portion (1) being located in the region of generation of the first bow wave and with the Centers of Low Pressure (2c,3c) of the lateral wall portions (2,3) in the region of connection thereof with the horizontal wall portion (1) being located in a selected position between the Center of Low Pressure (1c) and up to or slightly forwardly the leading edge (1a) of the horizontal wall portion (1).
Type:
Application
Filed:
July 16, 2012
Publication date:
June 5, 2014
Applicant:
MILAN SHIPPING AND INVESTMENT LIMITED
Inventors:
E. Emmanuel Petromanolakis, E. Kalomoira Petromanolakis, E. Evagelos Petromanolakis