Determination of radial displacements of cases and aviation multi?shaft counter?rotors engines during the aircraft evolution
Keywords:
radial clearance; overload; evolutions; flexibility; displacement; 3–D finite element modelsAbstract
As applied to the problem of radial clearances appointment in flow part of aviation gas turbine engines, the question on definition of displacements of cases and rotors from loads occurring during the aircraft evolutions is considered. Elastic displacements of cases and rotors caused by weight and evolution overloads are comparable with the values of the operating radial clearance and must be considered. When determining the displacements from gyroscopic moments that occur during the evolution, it is necessary to take into account the high and low pressure rotors counter?rotation. On the example of bypass engine with rotors counter?rotation, the influence of loads, which occuring during the evolutions, on the radial displacements of rotors and the cases in producer is shown. When determining the displacements of rotors the mutual influence of elastic deformations in power case supports is taken into account.Downloads
Published
2018-03-07
Issue
Section
AIRCRAFT AND ROCKET AND SPACE TECHNOLOGY