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Question # 20

What does “ground resonance” refer to?

Options:

A.

Vibration instability in helicopters with fully articulated rotors on ground

B.

Retreating blade stall

C.

Autorotation

D.

Vortex ring

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SIFT Overview

Name Selection Instrument for Flight Training
Code SIFT
Vendor Public Service and Legal
Certification United States Army

SIFT Questions