Hi BOAC
Rate one turns can be done at low speeds (for airliners) but at high speeds we would exceed the 30š bank angle. In these occasions we have to calculate in a different manner. And in some airplanes there is not bat and ball
anymore.
I remember when I had a sim test for an airline in a 727 simulator. We had to do the "B figure", I donīt know if in UK you are familiar with it. Well it is like a series of racetracks and procedure turns, which legs have to be timed. Turns are supposed to be made at 3š/sec.
During the procedure we had to use three speeds: hi, med, low. 300 kt, 250 kt, 200 kt.
Timing was impossible, of course, so it was impossible to make a good B figure! The sim was a complete wreck, so it was a nightmare...
cheers