The exact speed at which the propeller spins depends on the specific model of the P-51 Mustang and the engine variant it was equipped with. However, as a general reference, the propeller on the P-51D Mustang, powered by the Rolls-Royce Merlin engine, typically spun at the following speeds:
1. Take-off: Approximately 1,250 to 1,350 revolutions per minute (RPM).
2. Climb: Around 1,750 to 1,900 RPM.
3. Cruising: The propeller would typically operate at a speed of around 2,000 to 2,400 RPM during cruising at normal altitudes.
4. Combat: During combat maneuvers or high-performance situations, the propeller could spin at speeds of over 2,500 RPM.
It's important to note that these are general figures, and the actual propeller speed could vary based on factors such as altitude, engine settings, and the specific variant of the P-51 Mustang.
