SERBIA

Abstract:- This paper is partly devoted to problem of holes on aero engine disks. Flat disks with four, six and eight eccentric arranged holes were observed. Estimation of their low cycle fatigue life was performed in conditions of variable revolutions per minute. During that, blocks of variable revolutions per minute of low pressure compressor rotor of one aero engine, were used. Four blocks regulated for ground testing and one block registered during specific training flight. It is shown how an how much low cycle fatigue of disks is dependent of assigned geometry and material nominated for workmanship. Besides that, it is shown how the solution of simple problems can be useful for design of fatigue resistant aero engine disks