VRS vis a vis Roll Off
I recall reading the article by Lt Col Gross, but just mentally pigeon-holed the roll-off events as instabilities related to the unsteady flow associated with VRS.
That was an underestimation apparently, judging by the comments from some here with specific V-22 knowledge who propose that it is a potential causal factor in the Eglin accident.
The article does not describe the aerodynamic mechanism related to the roll-off events encountered during testing. It doesn't describe the magnitude of the events, i.e., roll attitude change, associated roll rates, amount of lateral control input required to correct the situation, altitude loss, if any, associated with the event.
Makes one even more curious about the sort of onboard data that might be retrievable from the normally installed flight control computers.
Thanks,
John Dixson