flap restrainers

flap restrainers

flap restrainersclick for a larger image
Droop and flap restrainers in articulated rotor heads.
The restraining devices on the rotor hub that prevent the rotor blades from flapping at too high an angle when the blades are stopped or rotating slowly.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved