How is high idle N1 determined for the T-54A?

High idle N1 for the T-54A is determined by the minimum N1. The minimum N1 indicates the lowest rotational speed of the engine that is necessary to maintain stable combustion and provide adequate thrust while the aircraft is stationary or during low-speed operations. It ensures that the engine runs without stalling and maintains enough power to respond effectively to throttle inputs.

This parameter is crucial for operational safety, as it allows the aircraft to be positioned or prepared for takeoff without destabilizing the engine's performance. Understanding this baseline helps pilots and engineers ensure that the engine operates efficiently under various conditions while avoiding unnecessary wear or potential failure associated with lower, less manageable speeds.