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What is the rotor whose blades are attached to the hub with hinges called?

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in Aerodynamics by (773k points)
What is the rotor whose blades are attached to the hub with hinges called?

(a) Teetering rotor

(b) Articulated rotor

(c) Hinge rotor

(d) Flap and lag rotor

I have been asked this question by my school teacher while I was bunking the class.

My doubt is from Helicopter Rotor and Notations in section Helicopter Dynamics of Aerodynamics

1 Answer

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Correct choice is (b) Articulated rotor

To elaborate: There are various arrangements of rotor based on how the blades are arranged to the hub for flap and lag motion. In case of articulated rotor, the rotor blades are attached to the hub with flap and lag hinges. This allows the blade to move independently with each blade that can either flap, lag, feather or lead.

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