Originally Posted by
galaxy flyer
We had duscussion here, eons ago, with Old Smokey et al, (might have involved SSG, JT) on the subject of overruns. First, the risk analyst those classify an overrun as "catastrophic" at, IIRC, something like 70 knots. Second, very few extra knots at the initiation of the high speed reject adds lots of knots at overrun point. Something like 5 knots extra at the first initiation results in 40-60 knots at the runway end.
I would very much like to see excel calculations supporting this.
Very easy to do, just requires a bit of time.
Double integration with a short Δ, just assume constant realistic values for deceleration and you should have a very clear idea of whether this sentence can be deemed true or false based on simple science.