The dynamics of a high-speed rotor, mounted on combined supports, is considered: an elastic rotation hinge on one end and a disk support in the intermediate part of the rotor with a spring suspension. A dynamic model and the equations of the system are constructed; the effect of the elastic-geometric parameters on the conditions of rotation of the rotor is investigated. The proposed algorithm and the calculation program are used for the solution of the optimization problems of the minimization of dynamic loads in the supports and the amplitude of the rotor fluctuation.
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