Vibrations due to excitation of the natural modes of an aircraft's body
are suppressed by an active multi-axis modal suppression system.
Dedicated sensors are positioned in the aircraft at optimal locations for
sensing modal induced vibrations. The sensor produced signals are
processed through control logic which, in response thereto, and in
response to aircraft inertial, velocity and altitude related signals
produces output control signals. The control signals effect control
surface deployment creating forces to suppress the natural mode induced
vibrations on multiple geometric axis's. More particularly, a symmetric
and anti-symmetric control surface deployments are used on one or more
geometric axis'to damp lateral, longitudinal, vertical and most
importantly torsional vibrational modes.