What is the purpose of the elastomeric bearing located within each main rotor spindle assembly?

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Prepare for the Utility Helicopter 60 Black Hawk UH-60S Exam. Utilize flashcards and multiple choice questions; each question includes hints and explanations. Gear up for success!

Multiple Choice

What is the purpose of the elastomeric bearing located within each main rotor spindle assembly?

Explanation:
The elastomeric bearing is a flexible interface between the blade root and the rotor spindle that allows the blade to move in three directions: flap, lead, and lag. This motion is essential for the blade to respond to aerodynamic loads and gusts without binding, while the elastomer damps some of the vibration transmitted into the hub. So its primary role is to permit those motions; it also helps reduce vibration as a beneficial side effect. Electrical insulation or increasing blade stiffness isn’t the function of this bearing.

The elastomeric bearing is a flexible interface between the blade root and the rotor spindle that allows the blade to move in three directions: flap, lead, and lag. This motion is essential for the blade to respond to aerodynamic loads and gusts without binding, while the elastomer damps some of the vibration transmitted into the hub. So its primary role is to permit those motions; it also helps reduce vibration as a beneficial side effect. Electrical insulation or increasing blade stiffness isn’t the function of this bearing.

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