Evaluation possibility of the turbine disks using of converted aircraft engines of the NK family

The article examines the possibility of using converted aircraft engines for gas pumping units example main parts GTE - disks NK-8-2U engine and NK-16ST NK-16-18ST ground engines. For all second stage low-pressure turbines three engines, stress-strain state calculation was performed boundary integral equations method (BEM) FEM in Ansys program. disk stress concentrators, theoretical concentration coefficient determined maximum equivalent stresses were calculated. During long-term operation, parameters operation change due to degradation changes (wear, erosion corrosion, development seals, contamination resizing flow parts). As a result, change, particular, rotation speed rotors temperature turbine, which determine state, must be taken into account when predicting durability. compliance results calculated study turbine with their real load confirmed by data metallurgical after prolonged operation. Using Manson formula cyclic durability before formation crack low-cycle fatigue. linear damage summation hypothesis, total rates (under static loading under fatigue loading) It is established that conversion have spent life flight it advisable continue use on ground-based GTU.