An improved aircraft includes a thrust source, a wing, and a boom
functioning as a "free lever" and having a distal end upon which the
thrust is acting and a proximal end about which the boom is freely
rotatable to balance forces acting on the proximal and distal ends of the
boom. The proximal end is pivotably mounted at or below the center of lift
of the wing and above the center of mass of the aircraft. The distal end
is located above the center of mass of the aircraft, when the lever is in
the vertical position to establish a gravity pendulum, and forward of the
center of drag of the aircraft, when the lever is in the horizontal
position, to establish a drag pendulum. All transition flight is a
resolution of the force vectors of the two pendulums. A director adjusts
the vertical and horizontal thrust components of the propulsion system.
