CONTROL THE SHAPE AND POSITION OF THE PROFILE BLADES OF THE BLISK OF A GAS TURBINE

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Rotor blades and turbine engine blisk and installations are being monitored closely in all important characteristics and parameters as before Assembly and after it. The most important parameters of the blisk are its geometric and dimensional characteristics. One of the objectives of the control of complex parts and assemblies gas turbine engine (GTE) and gas turbine units (GTU) is providing them with the specified dimensional and geometric characteristics. Traditional methods for the assessment of geometric and dimensional characteristics of GTE parts and GTU are often characterized by a lack of clear relationships between multiple heterogeneous measured parameters details that are often not objectively evaluate the part or host their functional purpose. This circumstance leads to unjustified rejection of parts that are within an acceptable range of values, or, even more dangerous, not rejected parts, which on the operational properties may not meet the specified. Traditional methods of controlling the shape and position of the profile blades is as follows. The blade and the template still fixed in the base device, the profile shape of the blade in the specified section of the control using templates, and the position control in the tangential direction relative to the theoretical axis of the scapula using the depth gauge. The monitoring is performed in at least three sections. The use of traditional methods to control the shape and position of the blades with respect to the estimation of the parameters of the blisk may result in an error. It is associated with several factors such as stationary fixation of the template, leading to a number of constraints to control the shape and position of the blade relative to its theoretical axis, which leads to unjustified rejection of a suitable product. In this regard, the company LLC Turbinectomies with Ufa state aviation technical University Ufa state oil technical University was developed and investigated a new method to control the shape and position of the blades of the blisk, in both the new and restored when repairing the gas turbine blades. To create the specified technique was to increase the reliability of the control blades of the blisk and, as a consequence, reducing the number of rejected products.