What is the maximum acceptable engine RPM when buckets are full forward?

The maximum acceptable engine RPM when the buckets are full forward is less than 2200 RPM. This limitation is crucial to ensure that the engine operates within a safe range, preventing excessive wear and potential damage. When the buckets are in a full forward position, the propulsion system is engaging a heavier load due to the angle of the buckets, which can increase the resistance faced by the engine.

Operating at a lower RPM helps maintain optimal engine performance and prolong its lifespan by minimizing the strain on the engine components. The choice of 2200 RPM is set as a precautionary measure, considering both operational safety and performance efficiency. Maintaining RPM below this threshold helps in achieving a balance between adequate thrust and engine longevity.