This document summarizes a study on varying the outlet blade angle of a centrifugal pump impeller using computational fluid dynamics (CFD). Three impellers were designed with outlet blade angles of 20, 30, and 50 degrees. CFD was used to analyze the flow patterns, pressure distributions, and head-capacity curves of each design. The results showed increased pump performance with higher outlet blade angles, including smoother head curves, higher heads, and improved efficiency. Future work is planned to model an impeller with a 30 degree outlet blade angle and further investigate design parameters.