Computer design technology of the advanced turbojet engines as complicated technical systems with large quantity of constructive and geometrical limitations

摘要

The gas-turbine powers and power plants (OTP) are widely used in diversified industries, such as the power engineering, aircraft and transport. In previous years the main direction of their development was increasing the parameters of a thermodynamic cycle: gas temperature in front of a turbine and pressure ratio. However, in the last few years the possibility of increasing the gas-turbine plant efficiency at the expense of such parameters growth has diminished considerably because the thermodynamic cycle parameters came nearly to their theoretical limit. Most clearly it can be seen on an air gas-turbine engines example, in which the gas temperature level in front of the turbine has reached 1800 C. In these conditions, the main development trend for GTP is to increase the units efficiency in all operational modes. One way out is the complex nonconventional scheme GTP designing, in which there are additional units and channels switching the flow of a propulsive mass in different operational modes.