Patent ID: 7766279

Claim:
A vortex ring generating system, comprising: a body subjected to a fluid, the body configured to propel the fluid from a forward portion of the body to a rear portion of the body when the body is in motion; and a plurality of spiraled surfaces affixed to the body, the plurality of spiraled surfaces alternately configured as concave and convex surfaces, a portion of each of the plurality of spiraled surfaces conforming substantially to a logarithmic spiral, wherein the radius of the logarithmic spiral measured at equiangular radii unfolds at a constant order of growth, the plurality of spiraled surfaces commencing proximate the forward portion of the body and terminating proximate the rear portion of the body, the plurality of spiraled surfaces configured to generate a vortex ring surrounding the body as the body propels the fluid from the forward portion of the body toward the rear portion of the body wherein each of the plurality spiraled surfaces includes one or more vanes, wherein at least a portion of each of the one or more vanes are incident to the fluid.