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No matter the design, faults in the initial prototypes are inevitable; even the best designs are merely theoretical. The transition from theory to reality is influenced by many factors.
For the Turbofan Engine, the performance matching of various components, the control system, and even the engine's stability are all areas where problems are bound to arise. The factors influencing faults are not limited to design issues; the gap between manufacturing technology and the final product compared to the design often poses a greater problem than the design itself.
Once the prototype is produced, the next step is to enter a continuous process of troubleshooting and repairing faults.
This is similar to software programming.
