Table 2 shows the impeller deformation results when (a) only centrifugal force, (b) centrifugal force and thermal load, (c) centrifugal force and aerodynamic pressure, and (d) combination of loads are applied to the impeller. The deformation values are normalized against the height of the leading edge. When only centrifugal force is applied, the blade tip at the leading edge deformed 0.0116. The blade tip at the leading edge deformed 0.0113 when centrifugal force and thermal load and 0.0103 when centrifugal force and aerodynamic load are applied. When all loads are applied, the tip displacement is 0.01. Also, in the blade type B, the largest deformation occurred when only centrifugal force is applied to the impeller. The thermal load and aerodynamic pressure acted on the opposite direction of the centrifugal force, resulting in smaller deformations when loads are combined. The deformation due to centrifugal force represents the worst case scenario, but the combined loads is the more realistic case.