A vehicle, comprising: a vehicle frame; a duct carried by the vehicle
frame with the longitudinal axis of the duct perpendicular to the
longitudinal axis of the vehicle frame; a propeller rotatably mounted
within the duct about the longitudinal axis of the duct to force an
ambient fluid through from an inlet at the upper end of the duct through
an exit at the lower end of the duct, and thereby produce an upward lift
force applied to the vehicle; a first plurality of substantially
parallel, spaced vanes non-pivotally mounted across at least the inlet
end of the duct; and fluidic means for affecting the ambient fluid flow
around the vanes to generate horizontal force components to the lift
force applied to the vehicle.