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Principles of Flightmedium#562

Slipstream (spiraling) effect from a clockwise-rotating propeller (viewed from cockpit) tends to yaw the aircraft:

A

Right

B

Left, due to the spiraling slipstream striking the left side of the vertical fin

Correct
C

Neither direction

D

Upward

Explanation

The slipstream corkscrews around the fuselage and strikes the left side of the vertical fin, creating a yawing moment to the left.

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