EASA Principles Of Flight Practice Test

In the feathered position, the drag of the propeller is then minimized.

False True It becomes maximal It remains unchanged

Correct Answer:

True

Explanation:

Feathering a propeller means turning the blades to align with the oncoming air so the angle of attack is very small. With the blades oriented edge-on to the flow, the aerodynamic resistance is greatly reduced, so the propeller produces as little drag as possible while coasting or under engine failure conditions. This is why feathering is used to minimize the drag from the propeller and improve gliding performance. It’s not zero drag—there’s still some residual drag from the hub, bearings, and minor aerodynamic losses—but it is as small as practically achievable. So the statement is true because feathering reduces the propeller’s drag compared with other blade positions.

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