Aircraft Propellers

Front

What is geometric pitch in aircraft propellers?

Back

Geometric pitch refers to the angle of the propeller blades along their length, which affects the angle of attack during flight.

Front

Why is it important for a propeller blade to have variations in geometric pitch?

Back

Variations in geometric pitch allow for a relatively constant angle of attack along the blade's length during cruising flight.

Front

What is the ideal blade angle setting for a controllable-pitch propeller during takeoff?

Back

The blade angle should be set at a small angle of attack and high RPM for optimal performance during takeoff.

Front

What does a constant-speed propeller do?

Back

A constant-speed propeller adjusts the pitch angle of the blades to maintain a constant engine RPM, optimizing performance.

Front

What happens if a propeller blade is shortened due to damage?

Back

The remaining blades must be reduced to conform with the shortened blade to maintain balance and performance.

Front

What effect does ice formation have on a propeller blade?

Back

Ice formation can produce unbalance and vibration, negatively affecting the propeller's performance.

Front

Define angle of attack in the context of propellers.

Back

Angle of attack is the angle between the chord line of the propeller blade and the oncoming airflow, influencing lift and drag.

Front

What is the role of a propeller governor?

Back

A propeller governor regulates the pitch of the propeller blades to maintain a constant engine RPM.

Front

Explain the relationship between blade angle and thrust.

Back

A higher blade angle increases thrust but also increases drag, while a lower blade angle reduces drag but may decrease thrust.

Front

What is the purpose of a controllable-pitch propeller?

Back

A controllable-pitch propeller allows the pilot to adjust the blade angle for optimal performance during different flight phases.