A rotor hub that rotates below the top of the mast, as on semi-rigid rotor systems is called what?

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Study for the FAA Helicopter Flying Handbook Test. Prepare with interactive quizzes and flashcards. Explore key concepts, procedures, and safety guidelines detailed in the handbook. Equip yourself for a successful exam experience!

Multiple Choice

A rotor hub that rotates below the top of the mast, as on semi-rigid rotor systems is called what?

Underslung describes a rotor hub that is mounted below the top of the mast. In semi-rigid rotor systems, the hub is typically carried beneath the mast top, allowing the rotor to tilt and flap about a single teetering hinge. This vertical placement contrasts with an overhung hub, which sits above the mast top and is more associated with other rotor system designs. The horizontal positions (inboard vs outboard) refer to where the hub sits along the rotor axis, not how it sits relative to the mast top, so they don’t apply here. So, the rotor hub below the mast top is underslung.

A rotor hub that rotates below the top of the mast, as on semi-rigid rotor systems is called what?

Study for the FAA Helicopter Flying Handbook Test. Prepare with interactive quizzes and flashcards. Explore key concepts, procedures, and safety guidelines detailed in the handbook. Equip yourself for a successful exam experience!

A rotor hub that rotates below the top of the mast, as on semi-rigid rotor systems is called what?

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