Sikorsky S-92: From Design to Operations

[The Sultan]

Horror,

AVC are generally required for high speed cruise to reduce vibration levels. They are generally poor for tranistory activities due to lag times. On takeoff there should be little vibratory forces coming down from the rotor between takeoff and climb out that would require an AVC. Also AVC's only handle one frequency (n/rev where n is the number of blades). These kind of aborts are generally 1/rev where something let go in the main or tail rotor.

Now if the AVC went ape-s**t which they can do would be an issue, but I do not see why that would happen as going to forward speed. It should show up in hover.

The Sultan