Journal of Theoretical 
and Applied Mechanics
14, 4, pp. 571-584, Warsaw 1976
																			
		
								
	and Applied Mechanics
14, 4, pp. 571-584, Warsaw 1976
Metoda sterowania modalnego i jej zastosowanie do ustateczniania lotu śmigłowca
 In this paper a theory of modal control of lumped-parameter systems for single- and multi-input systems derived by Porter and Crossley is presented. The stabilization problem of the flight of helicopter by this method is solved.   
		