However the application of full rudder prevents the aircraft looping
As a former RAAF QFI on Wirraways I can assure you that rudder was never applied as part of the snap-roll exercise. The aircraft was flown at 120 knots in level flight then full back stick was harshly applied. The Wirraway had an 8G wing. When this control forced was applied, the aircraft did not climb but merely proceeded in level flight albeit violently flick-rolling. It was an unpleasant manoeuvre, but a valuable training exercise to prepare pilots for the results of ham fisted control movements during a loop or a too harsh pull out from a dive. Been-there-done-that, with many RAAF trainee pilots.
