Originally Posted by
Genghis the Engineer
I would be interested in knowing your authoritative source for this.
Aeroplane gust response is proportional to the square of airspeed (source, any good university textbook on flight mechanics). So, adding (say) 10% to IAS, will add 21% to the airframe response to a gust. That has never seemed to me to be particularly wise in a conventionally configured aeroplane.
G
It's standard airline technique I believe, I can't say I've got a lighty POH to check though. The end result of doing it this way is that the airspeed fluctuations will be such that the lowest speed is no lower than your normal approach speed. Of course an airliner FCOM will give a limit on how much additional knots you apply for the gusts and will also dictate a performance penalty to the landing charts.