An active stiffness control for bearing support of gas-turbine engine rotors. Structure and static analysis

Аuthors

Leontiev M. K.^1*, Fomina O. N.²

1. Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia
2. Lyulka Scientific and Technical Center of the NPO "Saturn", 13 Kasatkin St., Moscow, 129301, Russia

*e-mail: lemk@alfatran.com

Abstract

Some measures are discussed to reduce a vibration level for high-speed gas-turbine engine rotors, especially in regard to transmissions of gas-turbine engine test benches. A bearing support design is suggested to allow stiffness control for the bearing. Numerical simulation results as well as static test data are considered for elastic parts of the bearing support. The bearing support described in the paper was manufactured and included in the transmission of the test bench intended to compressors of gas-turbine engines. Preliminary static and dynamical tests demonstrate functionality and operational efficiency of the bearing support design.