| Abstract: | The article discusses the problem of determining the dynamic characteristics of rotating and fixed grids in turbine-type machines. The grid is regarded as a linear system with distributed parameters. In problems involved with determining the stability of complex systems and in control problems, the dynamic characteristics of the turbine-type machines must be known. Such characteristics have been studied, for example, in [1]. However, in [1] the discussion is limited to a system with lumped parameters, which is admissible only at small perturbation frequencies. Article [2] discusses the problem of the propagation of vibrations in a flow with a constant mean velocity. In what follows, this problem is solved with a variable velocity of the mean motion. In addition, it is assumed that, with vibrations, there is removal or supply of mechanical energy.Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 5, pp. 77–83, September–October, 1971. |
