Define rotor blade coning

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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

Define rotor blade coning

Explanation:
Rotor blade coning is the upward flexing of the rotor blades as they spin, so the blade tips rise above the hub and the rotor disk takes on a conical shape. This happens because the blade is flexible and carries lift along its span while also experiencing centrifugal forces as the rotor turns. The combination of lift distribution and outward inertia causes the blades to bend upward about the root, increasing the cone angle with higher rotor speed or lift. It’s not about the blade pitches or twisting along the span; those are different blade behaviors.

Rotor blade coning is the upward flexing of the rotor blades as they spin, so the blade tips rise above the hub and the rotor disk takes on a conical shape. This happens because the blade is flexible and carries lift along its span while also experiencing centrifugal forces as the rotor turns. The combination of lift distribution and outward inertia causes the blades to bend upward about the root, increasing the cone angle with higher rotor speed or lift. It’s not about the blade pitches or twisting along the span; those are different blade behaviors.

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