Which term best describes the actual pitch of a propeller?

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Multiple Choice

Which term best describes the actual pitch of a propeller?

Explanation:
Actual pitch is the distance a propeller actually moves forward in one revolution under flight conditions, after accounting for slip. Geometric pitch is the theoretical distance the prop would advance per revolution based on blade geometry with no slip. In real conditions, air resistance and loading cause slip, so the prop moves less than its geometric pitch. The term that describes this real, operating pitch is effective pitch. That’s why it’s the best choice, because it reflects the true advance per revolution under actual conditions.

Actual pitch is the distance a propeller actually moves forward in one revolution under flight conditions, after accounting for slip. Geometric pitch is the theoretical distance the prop would advance per revolution based on blade geometry with no slip. In real conditions, air resistance and loading cause slip, so the prop moves less than its geometric pitch. The term that describes this real, operating pitch is effective pitch. That’s why it’s the best choice, because it reflects the true advance per revolution under actual conditions.

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