THE DEVELOPMENT OF METHODS OF THE DETERMINATION OF ACOUSTIC FIELDS AND UNSTATIONARY AERODYNAMIC LOADS IN THE CHANNELS, GRIDS AND BLADE RINGS OF THE AVIATION POWER UNITS AND ENERGY MACHINES

Abstract

The object of investigation: the acoustic fields and unstationary aerodynamic loads in the elements of the aviation power units and energy machines. The purpose of the work: the development of methods and new approaches to the solutions of the problems of the unstationary aerodynamics and aeroacoustics as applied to the indicated objects. Developed have been the new approaches and methods for the solution of the problems of the linear and unlinear spreading of the acoustic disturbances in the unhomogeneous fluxes of gas in the channels, radiation of the waves from the channel open and to be flown over by the flux, the design of the unstationary aerodynamic characteristics of the turbomachines grids. The developed design methods can be used in the practical investigations on the struggle against aviation and industry noise, flutter of turbomachines and ensurance of its vibration reliability. The design programs have been introduced in the CIAM in the complex on the ensurance of the strength design on the resonance oscillations and flutter of blades of the axialcompressors and propeller fans of the GTE in aviation. The field of application: the unstationary aerodynamics and aeroacoustics of channels and grids of the turbomachinesAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio