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

Why are helicopter main rotor blades constructed with aerodynamic twist (built-in twist from root to tip)?

To increase the rotational speed at the rotor blade tip To distribute lift more evenly along the blade span by giving the root a higher pitch angle than the tip To prevent centrifugal force from throwing the blade out of alignment To eliminate the need for tail rotor anti-torque compensation

Correct Answer:

To distribute lift more evenly along the blade span by giving the root a higher pitch angle than the tip

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