groundfloor,
As
John_T correctly states (or opines), there is no time lag (e.g. 1 to 2 seconds) allowed for in Vmcg certification. Such a wait, in my experience, would result in the aircraft departing the runway laterally!
All certification test flying, and normal operations, expects that the pilot will, without delay, continue to positively control the aircraft within normal parameters. In this context, it is expected that the pilot will immediately apply appropriate control inputs (rudder) to keep the aircraft on the runway centre-line. It
IS recognised that there is inevitably a time lag between pilot input and the desired results, and this leads to such things as minimum runway width for aircraft types (controlling the swing after engine failure), and initial yaw from Runway Heading following engine failure airborne requiring immediate return to within 5° of Runway Heading. You would be familiar with the latter case from Instrument Rating Issue and Renewal standards.
Perhaps you're confusing the "built in" 1 or 2 second delay with the certification rules requiring this delay for Engine Failure recognition, which directly impacts upon the V1 calculation, Accelerate-Stop Distances, and Accelerate-Go Distances. This is a distance consideration,
NOT a control consideration.
I don't know if you've seen any video clips of Vmcg testing, I don't have any, but they are available. These were done by test pilots expecting the failure, and in every case, lead to significant and alarming departure from the Runway Centre-Line. When involved in this same line of work (in a past life), one of my colleagues put the aircraft into a snow bank beside the runway, thank goodness that it was snow. In my own experience, I've had some very close encounters with the runway edge, and that was always after taking
IMMEDIATE action to control the situation without any time delay.
Thanks for the PM
groundfloor, regrettably I cannot provide you with the identity of the PPrune contributor who has significant experience in this area. He values his anonymity as I do. (At least you know the gender, that's a start).
Best Regards,
Old Smokey