An investigation into the balancing of high speed, flexible shafts by external application of compensating balancing sleeves

The paper investigates the use of compensating balancing sleeves positioned at shaft’s end for high-speed flexible shafts. sleeve is a new arrangement that creates pure moment with virtually zero radial reaction forces. For comparison purposes, experimental results from previous research are used to benchmark performance and demonstrate benefits newly proposed topology. configuration commensurate what required Power Turbine (PT) shaft twin industrial gas turbine, an overhung disc. study also aimed bladed shafts, such as those in high speed turbines/compressors, view improving their volumetric efficiency by reducing formation relatively large tip leakage gaps caused deflection/blade wear abradable seals. It shown be practically possible separate two main dynamic functions i.e. control bearing loads deflections, thus allowing independent adjustment. This enables determined set during low-speed commissioning before any excessive deflection resulting seal occurs, typical when final undertaken full operational speed.