Hovercraft without lift fan

Abstract

A hovercraft without lift fan includes: a hull; and a power device; wherein the hull includes: a main body; and two sub-bodies; wherein bottom surfaces of the sub-bodies are lower than a bottom surface of the main body, the two sub-bodies are symmetrically aligned under a front portion of the bottom surface of the main body, the two sub-bodies are provided with a distance therebetween; an outer surface of the sub-body and an outer surface of the main body form an aligned side surface or an unified side surface; the aligned side surface or the unified side surface extends towards a space under the bottom surfaces of the main body and the sub-bodies for forming a main sidewall; an inner side surface of the sub-body extends towards a space under the bottom surface of the sub-body for forming a sub-sidewall; wherein during sailing, the main sidewalls and the sub-sidewalls are partly immersed in water and respectively form three independent lifting areas having forward openings with the bottom surface of the main body and the bottom surfaces of the sub-bodies. The hovercraft doesn't utilize the lifting fan of conventional hovercrafts. However, during sailing, a high-pressure air cushion is effectively formed under the hull, in such a manner that low sail resistance, high propulsion efficiency and high speed is archived.

Dependencies are inferred from the claim text.