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, symmetric and anti-symmetric control surface deployments are used on one or more geoaietric axis's to damp lateral, longitudinal, vertical and most importantly torsional vibrational modes.
Aircraft multi-axis modal suppression system for reducing torsional vibration in the aircraft structure
System zur Unterdrückung der Vibrationsmoden in Drehung auf mehreren Axen eines Flugzeugs
Système de suppression des modes de vibration en torsion sur un avion
2019-05-08
Patent
Electronic Resource
English
Torsional vibration of aircraft engines
NTRS | 1932
|Torsional Vibration of In-Line Aircraft Engines
SAE Technical Papers | 1938
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