I was trying to figure out how 747 would answer you so I did a Google ....
Corner velocity
Corner velocity /also called corner speed or maneuvering speed/ is an important value for each aircraft. It is determined by plotting the structural limitations /in G forces/ against airspeed. The corner velocity is the minimum speed at which an aircraft can pull its maximum rated Gs. An aircraft at corner velocity attains maximum instantaneous turn performance.
The corner velocity for the F-16A in a stock configuration is 450 knots. This means that at 450 knots the F-16 has its best turn performance. At speeds above the corner speed, turn performance drops off.
Corner speed also affects the minimum turn radius. The size of the turn radius of an aircraft depends on the speed it is traveling. A faster aircraft requires a larger circle to turn in than a slower one. However, the turn redius isn't only a function of speed. It also depends on the number of Gs a pilot pulls during the turn. An aircraft at a constant speed will make a relatively wide circle at 1 G but will turn in a very tight circle at 7 or 8 Gs. The corner velocity is the speed that gives the optimum balance between turn rate and turn radius.
It will keep you going till the lads get back from watching the Footy .....
