🔍 Key Concepts

• Propeller pitch as a design measurement, not a pressure or angle • Relationship between pitch and how far the propeller would move in one revolution in ideal (no slip) conditions • Difference between pitch (distance) and blade angle (geometry/angle)

💭 Think About

• Ask yourself: Is pitch describing a distance the propeller travels per revolution, or an angle/pressure effect? • Which choice sounds like a designer’s specification you could write on a drawing: a length, an angle to the water surface, or a pressure? • Think about the term "without slip" – how is that usually defined in relation to propeller pitch in textbooks?

✅ Before You Answer

• Eliminate any option that talks mainly about pressure forces, since that’s thrust, not pitch • Separate choices that describe an angle from the one that describes a linear distance per revolution • Confirm that "without slip" refers to the theoretical advance in still water, not actual performance under load