Abstract: A vehicle is provided to be propelled by a rearward discharge of fluid therefrom and including fluid jet developing structure for discharging a rearward jet of fluid along a predetermined path for propelling the vehicle forwardly. A pair of upstanding steering vanes are mounted for rotation about upstanding axes spaced transversely apart and disposed on opposite sides of the center line of the aforementioned path. Control structure is also provided and operative to simultaneously similarly angularly displace the vanes about their axes of oscillation and the control structure further includes adjustment structure for selectively relatively angularly displacing the vanes about their axes of oscillation. The vanes extend rearwardly of their axes of oscillation distances greater than one-half the distance between the axes of oscillation of the vanes, whereby opposite relative angular displacement of the vanes to forwardly and outwardly inclined positions displaced generally 50.degree. to 60.degree.

Abstract: A vehicle including a rigid body is provided and includes a bottom structure defining a plurality, elongated and horizontally downwardly projecting bottom surface members which in turn define downwardly opening channels therebetween. The bottom structure further includes a plurality of elongated horizontal flexible inflatable members disposed and extending along between pairs of adjacent bottom surface members in the aforementioned channels. The body includes structure operative to apply fluid under pressure to the inflatable members to inflate the latter and the inflatable members, when inflated, include portions projecting downwardly below the bottom surface members.