On the outside of the V-22s rotor fairings there seems to be some kind of hinged weights directly opposite of each of the three rotor blades. Does anybody know what their purpose is?
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$\begingroup$ They appear to move from side to side in that curved slot, either passively or by actuation, so they are likely used to control vibration/harmonics in some way by offsetting the center of mass of the hub. That kind of thing looks like a bandaid, developed to fix a problem to avoid a bigger redesign. $\endgroup$– John KOct 10, 2022 at 19:46
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$\begingroup$ And also with that aerodynamic shape I expect that they rotate to align with the local airflow. $\endgroup$– JimOct 10, 2022 at 20:26
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$\begingroup$ If I were to take an educated guess I might say they are counterweights to provide a countervailing force that drives the blades to a safe pitch angle in case of actuator failure. $\endgroup$– Juan JimenezOct 11, 2022 at 16:42
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