[PDF][PDF] Active control of helicopter's gearbox vibrations and effects on teh cabin noise

W Corbetta, E Vigoni, A Toso, GL Ghiringhelli, L Dozio… - 2008 - dspace-erf.nlr.nl
In the framework of the European project FRIENDCOPTER, the Department of Aerospace
Engineering of Politecnico di Milano is involved in developing active control systems aimed …