PPL(H) Principles Of Flight Practice Questions - UK CAA PPL(H) Theory - Principles Of Flight Helicopter Exam

What is the relationship between the chord line and the camber of a symmetrical rotor aerofoil?

The upper and lower camber lines are identical, so the mean camber line coincides with the chord line The upper camber line is curved, while the lower surface is completely flat The chord line lies entirely above the upper surface of the aerofoil The lower camber line has greater curvature than the upper camber line

Correct Answer:

The upper and lower camber lines are identical, so the mean camber line coincides with the chord line

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