Abstract: An improved utility class hydrofoil boat having an integrated hydrofoil suspension and steering system wherein pairs of foils may be inclined at various angles, to the lateral axis of the boat, converting from surface piercing to submerged type foils when operated in concert and, in combination with the production of a yawing force about the vertical axis, may be used to produce coordinated turns by introducing a differential in the angle of inclination between starboard and port foils or by introducing a differential in the sweepback angle between starboard and port foils. In the preferred embodiment, a symmetrical, submerged tail foil having a positive dihedral is rotated to produce a yawing moment in proportion to the bank produced by manipulation of the pairs of foils, resulting in coordinated, banked turns with a single control movement.

Abstract: An aircraft landing wheel rotating device including a body portion eccentrically secured to the outer face of the landing wheel hub. A series of like air-receiving portions extend outwardly from the body member in spaced relation for catching the wind and effecting rotation of the wheel prior to landing.