Abstract
In this paper an analysis of individual and coupling effects of various parameters on the stability of the Laval rotor subjected to a longitudinal force is presented. In the case of a rotor with a mass-point, only divergence instability of the rotor motion can be observed. The regions of flutter instability appear only for the rotor with a disk. In both cases the critical load of the rotor is dependent on the disk position, the support stiffness and the value of the angular velocity. It is shown that neglecting the non-conservative character of the load may lead to incorrect results.
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