The primary goal of this project was to optimize two different PT6A-34 engines with two different goals in mind: increase horsepower while maintaining a constant thermal efficiency and increase thermal efficiency while maintaining a constant horsepower. The group used a Brayton power cycle in order to optimize the engines and add various different components to the engines in order to achieve the different goals. The engineers used Engineering Equation Solver (EES) in order to create a simulation of the engines for each optimized Brayton power cycle and it allowed the engineers to iterate very quickly when adding different components to the engines. The EES simulation calculated the numerical values at each stage in the cycle and also the property plot for the entire system.