Which component of the total force acts as lift when the rotor disk is tilted?

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Multiple Choice

Which component of the total force acts as lift when the rotor disk is tilted?

Explanation:
Lift is the vertical component of the rotor’s thrust that counteracts gravity. When the rotor disk tilts, the thrust vector tilts with it, but its vertical component still acts upward to support the weight. If the disk tilts by an angle, you can think of the thrust T being split into vertical and horizontal parts: vertical ≈ T cos(theta) and horizontal ≈ T sin(theta). The vertical part provides lift, while the horizontal part drives forward motion and does not contribute to lifting. So, the component that acts as lift is the vertical component.

Lift is the vertical component of the rotor’s thrust that counteracts gravity. When the rotor disk tilts, the thrust vector tilts with it, but its vertical component still acts upward to support the weight. If the disk tilts by an angle, you can think of the thrust T being split into vertical and horizontal parts: vertical ≈ T cos(theta) and horizontal ≈ T sin(theta). The vertical part provides lift, while the horizontal part drives forward motion and does not contribute to lifting. So, the component that acts as lift is the vertical component.

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