A multi-modal forced vortex device is described having a top plate and a
side wall creating a partially enclosed volume. The top plate includes
one or more adjustable fluid openings to permit, or restrict, fluid flow
into and out of the partially enclosed volume. Rotating blades housed
within the partially enclosed volume are manipulated (through control of
their pitch and, possibly, their speed) in conjunction with the
adjustable fluid openings to generate a variable magnitude attractive
force in a first mode, a variable magnitude down or pushing force in a
second mode, a variable magnitude up or lifting force in a third mode or
variable magnitude yaw, pitch and roll forces in a fourth mode.