When the rotor disk is tilted, what are the two components of total force?

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Prepare for the Theory of Rotary Wing Flight Test. Sharpen your skills with flashcards and multiple choice questions, with hints and explanations for each. Ace your exam with confidence!

Multiple Choice

When the rotor disk is tilted, what are the two components of total force?

Explanation:
When the rotor disk is tilted, the thrust generated by the rotor points along the rotor axis rather than straight up. If you resolve that tilted thrust into vertical and horizontal components, the vertical part acts upward to support the helicopter’s weight—this is lift. The horizontal part points forward, providing the forward thrust that moves the helicopter through the air. Drag is a separate aerodynamic force acting opposite motion through the air, not a component of the rotor’s thrust vector. So the two components are lift (vertical) and thrust (horizontal).

When the rotor disk is tilted, the thrust generated by the rotor points along the rotor axis rather than straight up. If you resolve that tilted thrust into vertical and horizontal components, the vertical part acts upward to support the helicopter’s weight—this is lift. The horizontal part points forward, providing the forward thrust that moves the helicopter through the air. Drag is a separate aerodynamic force acting opposite motion through the air, not a component of the rotor’s thrust vector. So the two components are lift (vertical) and thrust (horizontal).

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