Which way should the toggle of a switch that controls the propeller pitch move to place the propeller in low pitch (high RPM)?

Which way should the toggle of a switch that controls the propeller pitch move to place the propeller in low pitch (high RPM)?

• A. Forward
• B. Backward
• C. Upward
• D. Downward

Answer: (A)

Propeller pitch control works by changing the blade angle to the incoming air. Moving the lever forward selects a finer, lower blade angle. That reduces the aerodynamic load on the propeller and lets it spin up to higher RPM, placing it in low pitch. So to achieve high RPM (low pitch), push the toggle forward. Pulling it backward increases blade angle (coarser pitch) and lowers RPM. Upward or downward movements aren’t used to control the propeller pitch in this setup.

Propeller pitch control works by changing the blade angle to the incoming air. Moving the lever forward selects a finer, lower blade angle. That reduces the aerodynamic load on the propeller and lets it spin up to higher RPM, placing it in low pitch. So to achieve high RPM (low pitch), push the toggle forward. Pulling it backward increases blade angle (coarser pitch) and lowers RPM. Upward or downward movements aren’t used to control the propeller pitch in this setup.