B - Operations – Transporting – 63 – H
Patent
B - Operations, Transporting
63
H
115/23
B63H 1/14 (2006.01)
Patent
CA 1244293
ABSTRACT OF THE DISCLOSURE An improved efficiency propulsion system and method of improving the efficiency of a vessel operated in deep and shallow water depths and at constant or variable loaded and ballast water lines contemplates the use of a variable diameter propeller means as shown in Figure 1 capable of varying between a maximum extended diameter D and a minimum effective diameter d mounted on a propeller shaft 20 having an axis of rotation displaced from the bottom keel of the ship a distance less than one-half the maximum diameter D of the propeller means In this way, because of the use of the variable diameter ship propeller, the propulsion shaft may be located closer than otherwise permissible to the bottom keel of the ship which has the result of lowering the top blade tip trajectory relative to any particular chosen water line and also providing space for a generally larger diameter more efficient propeller installation. Additionally, because of the ability to decrease the diameter of the propeller when desired, the bottom blade tips of the propeller may be maintained above the bottom keel of the ship when the ship is operating in shallow waters. However, upon return to deep water depths in the open sea, the diameter of the propeller may be extended to gain optimum operating efficiency.
490722
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
LandOfFree
Ship propulsion system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ship propulsion system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ship propulsion system will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1178525