Patent ID: 7004093
Filing Date: 2006-02-28
Classification: B63B,B63H,Y02T

Abstract:
1. A three dimensional low drag underwater lifting body for operation in a submerged state, said lifting body having a fore and aft axis and an outer surface whose shape conforms a) in plan on one side of said fore and aft axis to a first parabolic curve whose vertex is located on the fore and aft axis, and on the other side of said axis to a second different parabolic curve whose vertex is also located on the fore and aft axis; said parabolic curves together defining a leading edge for the lifting body when viewed in plan and b) in longitudinal cross-sectional planes parallel to the fore and aft axis, to symmetrical and graduated generally parabolic foil curves having vertices lying on the leading edge defined by said first and second parabolic curves and which extend aft predetermined distances, with the thickness of the parabolic foil shaped longitudinal cross-sectional planes decreasing from the fore and aft axis of the lifting body to the leading edge of the lifting body.